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Technical Support Document, Permit Number: 11100077-101 of 67

Technical Support Document for

Draft Air Emission Permit No. 11100077-101 This technical support document (TSD) is intended for all parties interested in the draft permit and to meet the requirements that have been set forth by the federal and state regulations (40 CFR § 70.7(a)(5) and Minn. R. 7007.0850, subp. 1). The purpose of this document is to provide the legal and factual justification for each applicable requirement or policy decision considered in the preliminary determination to issue the draft permit. 1. General information

1.1 Applicant and stationary source location Table 1. Applicant and source address

Applicant/Address

Stationary source/Address (SIC Code: 2869 - Industrial Organic Chemicals, Not Elsewhere Classified)

Green Plains Inc 1811 Aksarben Dr Omaha, Nebraska 68106-2279

Green Plains Otter Tail LLC 24096 170th Ave Fergus Falls, MN 56537-7518

Contact: Fred Hutson Phone: 402-952-4940

1.2 Facility description

Green Plains Otter Tail LLC (Facility) is a fuel-grade ethanol production plant in Fergus Falls, Minnesota. The facility uses a grain feedstock (primarily corn) to produce fuel ethanol and byproducts. The facility is permitted to produce up to 65 million gallons of undenatured (200-proof) ethanol per year. Operations at the facility include grain receiving, grain storage, milling, fermentation, ethanol distillation, drying and cooling of dried distillers grains with solubles (DDGS), DDGS storage, DDGS handling and loadout to trucks or railcars, denaturing ethanol (adding gasoline or similar denaturant), and ethanol storage, piping, and loadout to trucks or railcars. Particulate matter, particulate matter less than 10 micron and particulate matter less than 2.5 micron (PM/PM10/PM2.5) are emitted from grain receiving, milling, DDGS handling and drying, combustion of natural gas or propane (boilers, regenerative thermal oxidizer, DDGS dryer), and vehicle traffic on paved and unpaved roads. Nitrogen oxides (NOX), carbon monoxide (CO), sulfur dioxide (SO2) and greenhouse gases (GHG, primarily carbon dioxide) are emitted from combustion of natural gas or propane. Volatile organic compounds (VOC) and hazardous air pollutants (HAP) are emitted from combustion of natural gas or propane, fermentation, drying and cooling of DDGS, wetcake production and storage, distillation, ethanol and denaturant storage and loadout, and volatile organic liquid (VOL) piping leaks. Control equipment at the facility includes fabric filters for control of particulate emissions from grain, flour, and DDGS handling operations, packed scrubbers for control of VOC and HAP emissions from fermentation and distillation, a regenerative thermal oxidizer (RTO) for control of VOC and HAP emissions from DDGS drying and cooling, and a flare for control of VOC and HAP emissions from ethanol loadout into trucks and railcars.

1.3 Description of the activities allowed by this permit action

This permit action is Part 70 Reissuance.


The Minnesota Pollution Control Agency (MPCA) has a combined operating and construction permitting program under Minnesota Rules Chapter 7007, and under Minn. R. 7007.0800. Under that authority, this permit action continues the construction authorization of air permit #11100077-004.

1.4 Description of notifications and applications included in this action

Table 2. Notifications and applications included in this action

Date received Application/Notification type and description 06/06/2018, with supplemental information received 05/01/2019.

Part 70 Reissuance (IND20170003)

10/02/2017 Administrative Amendment (IND20170004) to extend the PM and PM10 performance test deadline for STRU 22 (Hammermill with Baghouse) by 120 days.

07/23/2015 Administrative Amendment (IND20150001) for the ownership transfer of five aboveground storage tanks, ethanol loadout equipment, and the ethanol loadout flare to Green Plains Ethanol Storage LLC (GP Storage). Despite this ownership transfer, Green Plains Otter Tail LLC has maintained delegated responsibility for operating the equipment and for complying with the requirements of the air emissions permit.

1.5 Facility emissions

Table 3. Total facility potential to emit summary

PM tpy

PM10 tpy

PM2.5 tpy

SO2 tpy

NOx tpy

CO tpy

CO2e tpy

VOC tpy

Single HAP tpy

All HAPs tpy

Total facility limited potential emissions** 104 70.4 56.1 13.6 139 126 379,000 153 6.32 13.5

Total facility actual emissions (2018) 42.1 27.1 23.7 12.6 30.6 38.5 * 70.6 *

*Not reported in Minnesota emission inventory. **Includes emissions from fugitive sources. Emissions from insignificant activities are not included. Table 4. Facility classification

Classification Major Synthetic minor/area Minor/Area New Source Review X Part 70 X Part 63 X

1.6 Changes to permit

The permit does not authorize any specific modifications, however, the MPCA has a combined operating and construction permitting program under Minnesota Rules Chapter 7007, and under Minn. R. 7007.0800, the MPCA has authority to include additional requirements in a permit. Under that authority, the following changes to the permit are also made through this permit action: • The permit has been updated to reflect current MPCA templates and standard citation formatting.


• Completed requirements and the requirements for equipment that has been removed have been deleted.

• Some requirements have been reordered to help with clarity (i.e., similar requirements are grouped). • CAM has been added as discussed in Table 5 of this TSD. • Permit Flexibility: Additional permitting flexibility has been added to the permit. The flexibility allows the

addition, modification, and replacement of emission units and control devices described below in the technical information section of this TSD. The MPCA will be able to reconcile facility changes periodically to ensure that the permit reflects current operations at the facility.

• TFAC 2 – Total Facility: Limits on annual grain receiving throughput and DDGS loadout throughput (and associated

recordkeeping) have been added to the permit to limit PM, PM10, and PM2.5 emissions to below NSR major source thresholds.

A limit on annual denaturant usage throughput (and associated recordkeeping) has been added to the permit to limit VOC emissions to below NSR major source thresholds and to limit HAP emissions to below the 40 CFR pt. 63 NESHAP major source thresholds.

Additional requirements related to permit flexibility have been added to TFAC 2 of the permit. These include requirements to maintain a current equipment list and process flow diagram and to a submit an annual report documenting the changes made to equipment, stacks, or control equipment using the flexible permit language.

• COMG 1 (GP001) / VOL Storage Tanks (EQUI 58, EQUI 59, EQUI 60, EQUI 61, and EQUI 62): The requirements of 40 CFR pt. 60, subp. Kb were moved from COMG 1 to the individual

applicable tank subject items in the permit: EQUI 60 (TK003) – Denaturant Storage Tank, EQUI 61 (TK004) – Denatured Ethanol Tank 1, and EQUI 62 (TK005) – Denatured Ethanol Tank 2. COMG 1 has been removed from the permit.

The two 200 proof tanks EQUI 58 (TK001) and EQUI 59 (TK002) have been determined to be process tanks not subject to 40 CFR pt. 60, subp. Kb. The Minnesota Standard of Performance for Post-1969 Industrial Process Equipment is the applicable standard for these tanks. The Permittee has chosen to continue operating and maintaining the internal floating roofs for these tanks in order to limit VOC emissions below PSD thresholds; therefore, operation, inspection, and recordkeeping requirements based on 40 CFR pt. 60, subp. Kb have been added to the permit at EQUI 58 and EQUI 59.

EQUI 60, EQUI 61, and EQUI 62 have been determined to be subject to Minn. R. 7011.1505 (Minnesota Standards of Performance for Petroleum Liquid Storage Vessels). The applicable requirements of this standard have been added to the permit at subject items EQUI 60, EQUI 61, and EQUI 62.

Requirements to operate and maintain the internal floating roofs for EQUIs 58 and 59 have been added to the permit in order to limit VOC emissions below the NSR major source threshold.

• COMG 2 (GP002) – Grain Handling Fabric Filters, TREA 7 – Grain Receiving Baghouse, TREA 8 – Hammermill Baghouse, and TREA 11 – DDGS Loadout Baghouse: The control equipment monitoring requirements were moved from COMG 2 to the individual

applicable fabric filter subject items in the permit: TREA 7 (CE001) – Grain Receiving Baghouse, TREA 8 (CE008) – Hammermill Baghouse, and TREA 11 (CE011) – DDGS Loadout Baghouse. This change was primarily made because some fabric filters are subject to different regulations (e.g. TREA 7 and TREA 8 are subject to CAM, and TREA 11 is not). COMG 2 has been removed from the permit.

In the previous permit, the requirements of the Minnesota Control Equipment Rule (Minn. R. 7011.0060-7011.0080) were added to the grain handling fabric filters in error. Since these rules do not apply, these requirements have been removed from the permit.

• COMG 6 – Indoor Grain Receiving Limits: COMG 6 is a new component group that was created to list the operating limits taken for the grain receiving building for the 4/18/18 and 9/28/18 air dispersion


modeling PM10 NAAQS demonstrations. These operating limits include restrictions on daily grain receiving throughput, hours of operation, and daily number of straight trucks.

• EQUI 4 (EU031) – Truck Ethanol Loadout, EQUI 116 – Rail Ethanol Loadout, and TREA 21 (CE026) – Flaring: Rail ethanol loadout operations were never explicitly identified in the permit, even though this

operation was part of the original facility design. This emission unit has now been identified in the permit as EQUI 116. EQUI 116 is required to vent emissions to the flare, TREA 21 (CE026), at all times.

EQUI 4 and EQUI 116 are each subject to the Minnesota Performance Standard for Post-1969 Industrial Process Equipment. This standard has been listed at EQUI 4 and EQUI 116 in the permit.

The natural gas combustion emissions from the flare (0.0204 MMBtu/hr) and CO and NOX emissions from flaring are now listed at the control equipment subject item (TREA 21). EQUI 37/EU032 (Loadout Flare) has been removed from the permit.

The TREA 21 overall VOC control efficiency limit has been revised to 96.7%, based on an assumed 98.7% emissions capture efficiency for NSPS-compliant tanker trucks.

Control efficiency limits for specific individual HAPs have been added to the permit at subject item TREA 21 for the purposes of calculating uncontrolled HAP emissions. Compliance with the control equipment operating parameter limits in the permit provide assurance of compliance with these limits. The citation “to avoid major source classification under 40 CFR Section 63.2” has been removed from the VOC control efficiency limit at TREA 21, since the relevant individual HAP species control efficiencies are now listed.

• Additional Grain Storage Silos: The last permit action (permit #11100077-004) incorporated a major permit amendment application (received 5/12/2012) to install three additional grain storage silos and additional conveyors for filling and reclaiming grain from these silos, as listed below: EQUI 6 (EU056) – Silo #3 Conveyor EQUI 10 (EU060) – Corn Storage Silo #3 EQUI 11 (EU061) – Silo #4 Conveyor EQUI 13 (EU063) – Corn Storage Silo #4 EQUI 14 (EU064) – Silo #5 Conveyor EQUI 16 (EU066) – Corn Storage Silo #5 EQUI 166 (EU057) – Silo #3 Reclaim EQUI 167 (EU062) – Silo #4 Reclaim EQUI 168 (EU065) – Silo #5 Reclaim

Permit #11100077-004 did not include any specific permit requirements pertaining to construction authorization for these units, nor did it incorporate the applicable emission standards for these units. The permit has been updated to include construction conditions for these units, as well as the applicable performance standards (Minn. R. 7011.1505 – Dry Bulk Agricultural Commodity Rule, or “Bulk Ag. Rule”). An operating limit has been added to EQUI 13 and EQUI 16 prohibiting operation of these storage silos while the Temporary Flat Storage Facility is in place, as was assumed in the 4/18/18 and 9/28/18 air dispersion modeling PM10 NAAQS demonstrations.

• EQUI 18 (EU027) – Emergency Generator and EQUI 108 (EU026) – Fire Pump: Emission standards for fire pump engines were incorrectly applied to EQUI 18 in the previous

permit. These have been replaced with the correct emission standards for pre-2007 model year emergency CI ICE with a displacement of less than 10 liters per cylinder that are not fire pump engines (40 CFR § 60.4205(a), Table 1 to 40 CFR pt. 60, subp. IIII).

The fuel type restrictions for EQUI 18 and EQUI 108 have been updated to reflect the fuel type restriction at 40 CFR § 60.4207(b). The remaining applicable requirement citations from 40 CFR pt. 60, subp. IIII have been listed at EQUI 18 and EQUI 108 as described in the permit organization section of this TSD.


Citations for 40 CFR pt. 60, subp. IIII (Standards of Performance for Stationary Compression Ignition Internal Combustion Engines) requirements were updated to include 40 CFR § 63.6590(c) (citation of the requirement in 40 CFR pt. 63, subp. ZZZZ that specifies that compliance with the NESHAP is met through compliance with the NSPS) and Minn. 7011.8150 (Minnesota incorporation of 40 CFR pt. 63, subp. ZZZZ by reference). The permit citation for the Minnesota incorporation of 40 CFR pt. 60, subp. IIII was corrected to Minn. R. 7011.2305.

The EQUI 18 and EQUI 108 operating hour limits (250 and 500 operating hours per year 12-month rolling sum, respectively) have been removed from the permit, because these limits are not required to limit PTE to below PSD major source thresholds. The September 6, 1995 U.S. EPA memo allows PTE for these engines to be calculated assuming 500 operating hours per year.

EQUI 18 and EQUI 108 were not included in the 4/18/18 and 9/28/18 air dispersion modeling PM10 NAAQS demonstrations; therefore, best management practice (BMP) requirements were added to the permit to reduce PM10 air quality impacts from these engines.

• EQUI 114 – Silo #1 and Silo #2 Reclaim and EQUI 115 – Corn Elevator 3: These emission units (a conveyor and an elevator) were both previously represented by a single emission unit (EU009 – Reclaim System). These emission units have each been given an individual subject item ID: EQUI 114 (EU009) – Silo #1 and Silo #2 Reclaim and EQUI 115 – Corn Elevator 3.

• EQUI 35 (EU028) – Boiler 1 and EQUI 36 (EU029) – Boiler 2: Minn. R. 7011.0505 specifies that Minn. R. 7011.0500 to 7011.0550 only applies to indirect

heating equipment for which a standard of performance has not been promulgated in a specific rule. EQUI 35 and EQUI 36 are each subject to 40 CFR pt. 60, subp. Dc; therefore, Minn. R. 7011.0515 does not apply to these boilers. These requirements have been removed from the permit.

The nitrogen oxides (NOX) and carbon monoxide (CO) limits for EQUI 35 and EQUI 36 are no longer necessary for limiting PTE to below the PSD major source thresholds. These limits and their associated performance test requirements have been removed from the permit.

The low-NOX burner subject items, TREA 36 (CE023) and TREA 37 (CE024) are considered to be inherent to the boiler design, rather than add-on air pollution control equipment. These control equipment subject items have been removed from the permit.

• EQUI 55 (EU050) – DDGS Dryer: The rule language of Minn. R. 7011.0715, subp. 3 was removed from EQUI 55 in the permit

because all of the necessary conditions of this subpart are not met. The DDGS dryer stack is located within a quarter mile of a public roadway (less than 0.25 mi. from 170th Ave in Fergus Falls), and the thermal oxidizer (TREA 25) does not have a PM control efficiency of greater than 85 percent.

The multiclone (formerly CE029) is now considered inherent process equipment for the DDGS dryer. The DDGS dryer description has been revised to include the multiclone, and references to the multiclone as air pollution control equipment have been removed from the permit.

The citation of the EQUI 55 operation and maintenance (O & M) requirement was updated to Minn. R. 7007.0800, subp. 2 (Minn. R. 7007.0800, subp. 14 applies to control equipment).

The citation of the requirement to vent all EQUI 55 emissions to TREA 25 has been updated to include the Title V air dispersion modeling citation.

• EQUI 56 (EU051) – DDGS Cooler: EQUI 56 is subject to Minn. R. 7011.0715 (Minnesota Standards of Performance for Post-1969

Industrial Process Equipment). These requirements have been added at EQUI 56 in the permit. During normal operation, emissions from the DDGS Cooler are routed through a fabric filter

(TREA 39 – DDGS Cooler Baghouse) prior to being vented to the DDGS dryer (EQUI 55) burners, where the emissions ultimately vent to the RTO (TREA 25) and RTO Stack (STRU 26 – DDGS with Thermal Oxidizer). TREA 39 has an alternate stack (STRU 80 – DDGS Cooler Baghouse Stack) which is typically used during startup of the DDGS dryer. TREA 39 and STRU 80 have been added


to the permit. The permit has been revised to specify that emissions from EQUI 56 must be vented to TREA 39 at all times.

The requirements pertaining to cessation of wetcake feed to the DDGS dryer during RTO breakdown are already listed at EQUI 55, thus have been removed from EQUI 56 to avoid redundancy.

• Controlled Emissions Units Newly Identified in the Permit: Several controlled emissions units have been identified and included in the permit, as listed in permit Appendix C.

• Uncontrolled Emissions Units Newly Identified in the Permit: The following uncontrolled emissions units subject to the Minnesota Bulk Ag. Rule have been added to the permit: EQUI 117 – Corn Dump Pit/Auger 1 (Uncaptured), EQUI 118 – Corn Dump Pit/Auger 2 (Uncaptured), EQUI 129 – DDGS Storage Conveyor 1, EQUI 130 – DDGS Storage Conveyor 2, EQUI 131 – DDGS Storage Elevator, EQUI 132 – DDGS Storage Conveyor 3, EQUI 133 – DDGS Storage Conveyor 4, EQUI 134 – DDGS Reclaim via Front End Loader, EQUI 135 – DDGS Reclaim Dump Pit, and EQUI 138 – DDGS Load Spout (Truck/Rail, Uncaptured).

• EQUI 151 – Gasoline Tank (1,000 gal): The gasoline tank was previously permitted as an insignificant activity, but has now been added as an emission unit due to applicability of 40 CFR pt. 63, subp. CCCCCC (National Emission Standards for Hazardous Air Pollutants for Source Category: Gasoline Dispensing Facilities). These requirements, along with the Minnesota Performance Standards for Post-1969 Industrial Process Equipment, are listed at EQUI 151 in the permit.

• EQUI 152 – Gasoline Dispensing: The Permittee has accepted a limit on gasoline throughput in order to limit VOC and HAP emissions to below PSD and NESHAP major source thresholds. The gasoline throughput limit, associated recordkeeping requirements, and the Minnesota Performance Standards for Post-1969 Industrial Process Equipment are listed at EQUI 152 in the permit.

• EQUI 169 – Boiler Make-Up Air Heater: EQUI 169 is a combustion unit that has been identified in the permit. This unit is subject to Minn. R. 7011.0610 (Minnesota Standards of Performance for Fossil-Fuel-Burning Direct Heating Equipment). These requirements are listed at subject item EQUI 169 in the permit.

• FUGI 7 (EU017), FUGI 8 (EU018), FUGI 9 (EU019) – Cooling Tower Cells 1, 2, and 3: Per current MPCA air permitting practice, the cooling tower cells have been re-categorized as

fugitive emission sources. STRU 38 (SV012), STRU 39 (SV013), and STRU 40 (SV014) have been removed from the permit.

The mist eliminator subject items for each tower, TREA 12 (CE012), TREA 13 (CE013), and TREA 14 (CE014) are considered to be inherent to the cooling tower design, rather than add-on air pollution control equipment. These control equipment subject items have been removed from the permit.

Each cooling tower cell is subject to the Minnesota Performance Standards for Post-1969 Industrial Process Equipment. These requirements have been listed at FUGIs 7, 8, and 9 in the permit.

• FUGI 11 (FS007) – Grain Receiving and Conveying at Temporary Storage Facility, FUGI 17 (FS004) – Paved Roads, FUGI 18 – Unpaved Roads, FUGI 19 – Grain Reclaim Operations at Temporary Storage Facility, and FUGI 20 – Wind Erosion at Temporary Storage Facility: The temporary storage facility (also known as “temporary flat storage” and “corn bunker”) has

been broken into three discrete fugitive emissions activities: FUGI 11 – Grain Receiving and Conveying, FUGI 19 – Grain Reclaim Operations, and FUGI 20 – Wind Erosion. This change was made to more clearly identify the applicable emissions standards and monitoring approaches used for each of these operations.

The temporary storage facility is exempt from the Minnesota Bulk Ag. Rule, as discussed in Section 2.6 of this TSD. The applicable standard of performance for all outdoor grain receiving and grain handling operations at the temporary storage facility is the Minnesota Visible Emission Restrictions for New Facilities (Minn. R. 7011.0110), which has been added to the permit at subject items FUGIs 11 and 19, along with associated visible emissions/opacity monitoring requirements.


Limiting assumptions utilized in the PM10 air dispersion modeling analysis have been incorporated as permit limits at subject items FUGIs 11 and 19. These include limits on hours, days, and months of grain receiving and reclaim operations, limits on grain throughput, and restrictions on types of trucks used to unload grain.

A compliance schedule for the PM10 NAAQS has been added to the permit as Appendix N. Permit requirements at FUGIs 11, 18, 19, and 20 (in addition to Appendix N), describe certain best management practices for operation of the temporary storage facility. In addition, the compliance schedule includes requirements to cease operations of the temporary storage facility on a specified schedule.

The unpaved roads at the facility were not identified in the previous permit. The different road surfaces at the facility have now been separately identified as FUGI 17 (Paved Roads) and FUGI 18 (Unpaved Roads) in the permit.

Opacity and visible emissions monitoring requirements have been added to subject items FUGIs 11, 18, 19, and 20 of the permit.

• FUGI 15 (FS005) – Equipment Leaks: The Permittee began construction of the synthetic organic chemicals manufacturing facility in October of 2006, making this facility subject to 40 CFR pt. 60, subp. VV. In the last permit (#11100077-004), the requirements of 40 CFR pt. 60, subp. VV were mistakenly replaced with the requirements of 40 CFR pt. 60, subp. VVa. The requirements of 40 CFR pt. 60, subp. VVa have been removed from the permit, and the applicable requirements of 40 CFR pt. 60, subp. VV have been restored to the permit (as described in the Permit Organization section of this TSD).

• FUGI 16 (FS006) – Wetcake -AOS: The storage of wetcake is subject to the Minnesota Bulk Ag. Rule. These requirements have

been added to the permit at FUGI 16. The permit condition requiring wetcake to be removed from the site within 72 hours was

revised to provide an exception when the outside temperature is less than 55 °F. • STRU 7 (SV001) – Grain Receiving with Baghouse, STRU 22 (SV008) – Hammermill with Baghouse, and

STRU 23 (SV011) – DDGS Loadout with Baghouse: The PM2.5 emission limits for each of these stacks were revised to Title I Conditions (limits to

avoid major source classification under New Source Review). The citation “to avoid major source classification under 40 CFR Section 70.2 and Minn. R.

7007.0200” has been removed from the STRU 7 PM10 emission limit, because the facility is a major source under the Part 70 permitting program.

The PM10 emission rate limits for STRUs 7, 22, and 23 were utilized in the PM10 air dispersion modeling analysis. The citation for each of these limits has been revised to include the standard citation for Title V air dispersion modeling-based limits (Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1-2, Minn. R. 7009.0010-7009.0090, and Minn. Stat. 116.07, subds. 4a & 9).

The PM/PM10/PM2.5 emission rate limits at STRUs 7, 22, and 23 were revised to include an extra significant figure (3.170 lb/hr, 2.040 lb/hr, and 0.410 lb/hr, respectively), and were revised to specify that the limits apply on a 3-hour average basis.

The Minnesota Performance Standard for Post-1969 Industrial Process Equipment has been added at STRU 22 in the permit, because some of the equipment vented to this stack is subject to this standard instead of the Minnesota Bulk Ag Rule (includes hammermills and corn flour conveyors).

Operating hour restrictions utilized in the PM10 air dispersion modeling for STRU 7 and STRU 23 have been incorporated into the permit as operating limits, along with associated recordkeeping.

• STRU 24 (SV026) – Fermentation with CO2 Scrubber, TREA 22 (CE027) – CO2 (Fermentation) Scrubber, STRU 25 (SV027) – Distillation (Vent Gas) Scrubber, and TREA 23 (CE028) – Vent Gas (Distillation) Scrubber:


The VOC emission limits at STRUs 24 and 25 have been revised to include an additional significant figure (11.280 lb/hr and 4.750 lb/hr, respectively), and were revised to specify that the limits apply on a 3-hour average basis.

The citation “to avoid major source classification under 40 CFR Section 63.2” has been removed from the STRU 24 and STRU 25 VOC emission limits, because these limits do not effectively limit HAP emissions to less than the single and total HAPs major source thresholds (10 ton/year and 25 ton/year, respectively).

Requirements to measure specific HAP compounds during each VOC performance test have been added to the permit as specified in Appendix D, in order to confirm the controlled emission factors for these compounds (and to verify synthetic area source status under the NESHAPs program).

The scrubber operational requirements (includes daily and periodic monitoring) have been relocated to the applicable control equipment subject items in the permit (TREAs 22 and 23).

Monitoring conditions for the scrubber pressure drop range, minimum water flow rate, and scrubber additive material usage rate limits in the permit were revised to contain protocols for resetting the limits via an Approved Replicable Methodology, or ARM. This is a concept defined in the federal Part 70 permit rule as conditions that specify a replicable method for revising or updating monitoring parameters contained in the permit without the need to do a permit amendment.

A low production alternative operating scenario has been added to the permit at subject items TREAs 22 and 23. The alternative operating scenario allows the facility to set (and comply with) alternative control equipment operating parameters through compliant performance tests while operating at low production rates.

Control efficiency limits for specific individual HAPs have been added to the permit at subject items TREAs 22 and 23 for the purposes of calculating uncontrolled HAP emissions. Compliance with the control equipment operating parameter limits in the permit provide assurance of compliance with these limits (control efficiency performance testing for these individual HAP compounds is not required at this time). The citation “to avoid major source classification under 40 CFR Section 63.2” has been removed from the VOC control efficiency limits at TREAs 22 and 23, since the relevant individual HAP species control efficiencies are now listed.

Recurring VOC control efficiency performance tests have been added to the permit at subject items STRUs 24 and 25 to evaluate ongoing scrubber performance and to measure uncontrolled VOC emissions to each scrubber.

A one-time fermentation (CO2) scrubber inlet HAPs performance test has been added to the permit at STRU 24. This test is primarily required to confirm that the acetaldehyde concentration in the fermentation process vent is less than 0.1% by weight (40 CFR pt. 63, subp. VVVVVV applicability threshold), but also provides additional supporting data for pre-controlled HAP emission rates from the fermentation process equipment.

• EQUI 3 (EU052) – Regenerative Thermal Oxidizer, STRU 26 (SV028) – DDGS with Thermal Oxidizer, and TREA 25 (CE030) – Thermal Oxidizer: The natural gas combustion emissions from the regenerative thermal oxidizer burners (18

MMBtu/hr) are now listed at the control equipment subject item (TREA 25). EQUI 3/EU052 (Regenerative Thermal Oxidizer) has been removed from the permit.

The stack emission limits and associated performance testing requirements have been relocated to subject item STRU 26 in the permit.

The NOX emission rate limit from the previous permit (11.32 lb/hr) was determined to not be necessary for limiting NOX emissions below PSD major source thresholds; thus, this limit has been removed from the permit.

The permit now requires recurring NOX and SO2 emission factor tests at STRU 26 on a 10-year frequency.


The STRU 26 VOC emission rate limit has been revised from 1.11 lb/hr to 5.0 lb/hr in this permit action. Individual performance test run results have shown RTO-controlled VOC emission rates of up to 2.0 lb/hr; thus, the limit of 1.11 lb/hr was determined to be overly stringent when the control equipment is operating effectively. The new limit of 5.0 lb/hr is approximately 250% of the maximum VOC emission rate of an individual performance test run.

The PM/PM10/PM2.5 and CO emission limits at STRU 26 have been revised to include an additional significant figure (5.150 lb/hr and 12.910 lb/hr, respectively), and were revised to specify that the limits apply on a 3-hour average basis (previously listed 3-hour rolling average, which is not feasible because the stack does not have CEMS).

The PM10 emission rate limit for STRU 26 was utilized in the PM10 air dispersion modeling analysis. The citation for this limit has been revised to include the standard citation for Title V air dispersion modeling-based limits.

The citation “to avoid major source classification under 40 CFR Section 63.2” has been removed from the STRU 26 VOC emission limit, because this limit does not effectively limit HAP emissions to less than the single and total HAPs major source thresholds (10 ton/year and 25 ton/year, respectively).

Requirements to measure specific HAP compounds during each VOC performance test have been added to the permit as specified in Appendix D, in order to confirm the controlled emission factors for these compounds (and to verify synthetic area source status under the NESHAPs program).

Monitoring conditions for the thermal oxidizer temperature limit in the permit were revised to contain a protocol for resetting the limit via an Approved Replicable Methodology, or ARM. This is a concept defined in the federal Part 70 permit rule as conditions that specify a replicable method for revising or updating monitoring parameters contained in the permit without the need to do a permit amendment.

Control efficiency limits for specific individual HAPs have been added to the permit at subject item TREA 25 for the purposes of calculating uncontrolled HAP emissions. Compliance with the control equipment operating parameter limits in the permit provide assurance of compliance with these limits (control efficiency performance testing for these individual HAP compounds is not required at this time).

Recurring VOC control efficiency performance tests have been added to the permit at subject item STRU 26 to evaluate ongoing thermal oxidizer performance and to measure uncontrolled VOC emissions to the thermal oxidizer.

• STRU 79 – RTO Bypass Stack: The RTO Bypass Stack (STRU 79) has now been identified in the permit. The permit has been revised to allow up to 50 hours per year of preauthorized bypass of the

RTO when the dryer is not processing wetcake. This allows the facility to begin heating the dryer before the RTO reaches the minimum temperature limit. The permit has also been revised to include associated bypass recordkeeping requirements.

Emergency RTO bypass conditions for the dryer have been listed at subject item STRU 79 in the permit. Emergency bypasses must be reported as deviations.

• TREA 39 and STRU 80 – DDGS Cooler Baghouse and DDGS Cooler Baghouse Stack: TREA 39 and STRU 80 have now been identified in the permit. The permit has been revised to allow up to 50 hours per year of preauthorized bypass of the

dryer burners and the RTO when the DDGS cooler is operating. The permit has also been revised to include associated bypass recordkeeping requirements.

Emergency dyer burner and RTO bypass conditions for the DDGS cooler have been listed at subject item STRU 80 in the permit. Emergency bypasses must be reported as deviations.


2. Regulatory and/or statutory basis 2.1 New source review (NSR)

The permit carries forward limits on the facility such that it is a minor source under New Source Review regulations. No changes are authorized by this permit.

2.2 Part 70 permit program The facility is a major source under the Part 70 permit program.

2.3 New source performance standards (NSPS) The Permittee has stated that New Source Performance Standards apply to the operations at this facility. This facility is subject to 40 CFR pt. 60, subp. Dc – Standards of Performance for Small Industrial-Commercial-Institutional Steam Generating Units. Applicability is based on whether a steam generating unit (as defined at 40 CFR § 60.41c) commenced construction, modification, or reconstruction after June 9, 1989, and has a maximum design heat input capacity of greater than or equal to 10 MMBtu/hr, but less than or equal to 100 MMBtu/hr. EQUI 35 and EQUI 36 are steam generating units that were constructed after June 9, 1989, with heat input capacities of 92.4 MMBtu/hr; therefore, these units are each subject to 40 CFR pt. 60, subp. Dc. This facility is subject to 40 CFR pt. 60, subp. Kb – Standards of Performance for Volatile Organic Liquid Storage Vessels (Including Petroleum Liquid Storage Vessels) for Which Construction, Reconstruction, or Modification Commenced After July 23, 1984. Applicability is based on whether such a storage vessel has a capacity of greater than 75 m3, except that vessels meeting the criteria at 40 CFR § 60.110b(b) or 40 CFR § 60.110b(d)(1)-(d)(8) are not subject to this standard. EQUI 60, EQUI 61, and EQUI 62 each have a capacity of greater than 75 m3, were constructed after July 23, 1984, and do not meet the exemption criteria described above; therefore, 40 CFR pt. 60, subp. Kb applies to these vessels. EQUI 58 and EQUI 59 are each process tanks, which do not meet the definition of “Storage Vessel” at 40 CFR § 60.111b; therefore, 40 CFR pt. 60, subp. Kb does not apply to these tanks. Further discussion about 40 CFR pt. 60, subp. Kb applicability may be found at Section 3.2 of this TSD. This facility is subject to 40 CFR pt. 60, subp. VV – Standards of Performance for Equipment Leaks of VOC in the Synthetic Organic Chemicals Manufacturing Industry for which Construction, Reconstruction, or Modification Commenced After January 5, 1981, and on or Before November 7, 2006. Applicability is based on whether a process unit (as defined at 40 CFR § 60.481) in the synthetic organic chemicals manufacturing facility was constructed, modified, or reconstructed after January 5, 1981, but no later than November 7, 2006, produces at least one of the chemicals listed in 40 CFR § 60.489. Ethanol is one of the chemicals listed in 40 CFR § 60.489, and the group of ethanol producing equipment commenced construction between January 5, 1981 and November 7, 2006; therefore, VOC leaks from this group of ethanol producing equipment at the facility (FUGI 15) are subject to 40 CFR pt. 60, subp. VV. This facility is subject to 40 CFR pt. 60, subp. IIII – Standards of Performance for Stationary Compression Ignition Internal Combustion Engines. Applicability is based on whether a stationary compression ignition (CI) internal combustion engine (ICE) commences construction, modification, or reconstruction after July 11, 2005, except that non-fire pump CI ICE manufactured before April 1, 2006, certified NFPA fire pump CI ICE manufactured before July 1, 2006, and CI ICE being tested at a stationary test cell are not subject to this standard. EQUI 18 (Emergency Generator) is a CI ICE that is not a fire pump, was constructed after July 11, 2005, and was manufactured after April 1, 2006. EQUI 108 (Fire Pump) is a CI ICE that was constructed after July 11, 2005 and was manufactured after July 1, 2006 as a certified NFPA fire engine. Based on the applicability criteria of this standard, EQUI 18 and EQUI 108 are each subject to 40 CFR pt. 60, subp. IIII.


This facility is not subject to 40 CFR pt. 60, subp. DD – Standards of Performance for Grain Handling Facilities. Applicability is based on a grain elevator’s storage capacity, which must exceed 2.5 million bushels for any grain storage facility not for human consumption. The current storage capacity of grain elevators at this facility is 616,746 bushels, and the storage capacity following installation of EQUIs 10, 13, and 16 will be 2,452,501 bushels; therefore, 40 CFR pt. 60, subp. DD does not apply. This facility is not subject to 40 CFR pt. 60, subp. NNN – Standards of Performance for Volatile Organic Compound (VOC) Emissions from Synthetic Organic Chemical Manufacturing Industry (SOCMI) Distillation Operations. This standard applies to distillation units that do not discharge their vent streams to recovery systems. The distillation units at this facility vent to recovery systems to recover and sell ethanol; therefore, 40 CFR pt. 60, subp. NNN does not apply.

2.4 National emission standards for hazardous air pollutants (NESHAP) The facility has accepted limits on HAP emissions such that it is an area source under 40 CFR pt. 63. Thus, no major source NESHAPs apply. In addition, the Permittee has stated that area source NESHAPs apply to the facility. The facility is subject to 40 CFR pt. 63, subp. ZZZZ – NESHAP for Stationary Reciprocating Internal Combustion Engines. Applicability is based on whether a reciprocating internal combustion engine (RICE) is owned or operated at a major or area source of HAP, except that stationary RICE being tested at a test cell are not subject to this standard. EQUI 18 (Emergency Generator) and EQUI 108 (Fire Pump) are existing stationary RICE located at an area source of HAP; therefore, 40 CFR pt. 63, subp. ZZZZ applies. Compliance with 40 CFR pt. 63, subp. ZZZZ is met for both of these engines through compliance with 40 CFR pt. 60, subp. IIII, as specified at 40 CFR § 63.6590(c). The facility is subject to 40 CFR pt. 63, subp. CCCCCC – NESHAP for Source Category: Gasoline Dispensing Facilities. Applicability is based on whether a gasoline dispensing facility (GDF, as defined at 40 CFR § 63.11132) is located at an area source of HAP. The affected source to which this standard applies includes each gasoline cargo tank during the delivery of product, and each storage tank. The facility operates a gasoline dispensing facility that is located at an area source of HAP; therefore, 40 CFR pt. 63, subp. CCCCCC applies. The facility is not subject to 40 CFR pt. 63, subp. JJJJJJ – NESHAP for Industrial, Commercial, and Institutional Boilers Area Sources. Applicability is based on whether the collection of boilers within a subcategory are located at an area source of HAP, except that the types of boilers listed in 40 CFR § 63.11195(a)-(k) are not subject to this standard. EQUI 35 and EQUI 36 meet the definition of “Gas-fired boiler” at 40 CFR § 63.11237 and the exemption criteria at 40 CFR § 63.11195(e); therefore, 40 CFR pt. 63, subp. JJJJJJ does not apply. The facility is not subject to 40 CFR pt. 63, subp. VVVVVV – NESHAP for Chemical Manufacturing Area Sources. Applicability is based on whether a chemical manufacturing operation processes, uses, or produces a material containing the HAP listed in Table 1 to 40 CFR pt. 63, subp. VVVVVV at an individual concentration of greater than 0.1 percent by weight. This facility does not produce any materials that contain acetaldehyde in concentrations greater than 0.1 percent by weight; therefore, 40 CFR pt. 63, subp. VVVVVV does not apply. A one-time fermentation (CO2) scrubber inlet HAPs performance test has been added to the permit at STRU 24 to confirm that the acetaldehyde concentration in the fermentation process vent is less than 0.1 percent by weight.

2.5 Compliance assurance monitoring (CAM) The table below lists the sources subject to CAM, the control equipment used, whether the source is a large or other pollutant specific emission unit (PSEU), and the pollutants triggering CAM.


Table 5. CAM summary

Unit Control CAM applicability Pollutant

Emission Limitation Basis

STRU 7 (Various)

TREA 7 Fabric Filter

Other PM/PM2.5

PM ≤ 3.170 lb/hr PM2.5 ≤ 3.170 lb/hr PM Control Efficiency ≥ 99% PM2.5 Control Efficiency ≥ 93% (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i) and Minn. R. 7007.3000)

Other PM10

PM10 ≤ 3.170 lb/hr PM10 Control Efficiency ≥ 93% (Title V modeling, Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i) and Minn. R. 7007.3000)

STRU 22 (Various)


Other PM/PM2.5

PM ≤ 2.040 lb/hr PM2.5 ≤ 2.040 lb/hr PM Control Efficiency ≥ 99% PM2.5 Control Efficiency ≥ 93% (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i) and Minn. R. 7007.3000)

Other PM10

PM10 ≤ 2.040 lb/hr PM10 Control Efficiency ≥ 93% (Title V modeling, Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i) and Minn. R. 7007.3000)

EQUI 4 EQUI 116

TREA 21 Flare

Other VOC

VOC Control Efficiency ≥ 96.7% (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i) and Minn. R. 7007.3000)

Other Hexane

Hexane Control Efficiency ≥ 96.7% (Title I Condition: Avoid major source under 40 CFR § 63.2)

STRU 24 (Various)

TREA 22 Scrubber

Other VOC

VOC ≤ 11.280 lb/hr VOC Control Efficiency ≥ 95% (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i) and Minn. R. 7007.3000)

Other Acetaldehyde

Acetaldehyde Control Efficiency ≥ 85% (Title I Condition: Avoid major source under 40 CFR § 63.2)

STRU 25 (Various)

TREA 23 Scrubber Other VOC


EQUI 55 DDGS Dryer EQUI 56

TREA 25 RTO Other VOC



Unit Control CAM applicability Pollutant

Emission Limitation Basis

DDGS Cooler

Other CO

CO ≤ 12.910 lb/hr CO Control Efficiency ≥ 97% (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i) and Minn. R. 7007.3000)

Other Acetaldehyde

Acetaldehyde Control Efficiency ≥ 97% (Title I Condition: Avoid major source under 40 CFR § 63.2)

Other Acrolein

Acrolein Control Efficiency ≥ 97% (Title I Condition: Avoid major source under 40 CFR § 63.2)

Other Formaldehyde

Formaldehyde Control Efficiency ≥ 97% (Title I Condition: Avoid major source under 40 CFR § 63.2)

EQUI 56 DDGS Cooler


Other PM/PM2.5

PM ≤ 5.150 lb/hr (STRU 26 limit) PM2.5 ≤ 5.150 lb/hr (STRU 26 limit) PM Control Efficiency ≥ 99% PM2.5 Control Efficiency ≥ 93% (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i) and Minn. R. 7007.3000)

Other PM10

PM10 ≤ 5.150 lb/hr (STRU 26 limit) PM10 Control Efficiency ≥ 93% (Title V modeling, Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i) and Minn. R. 7007.3000)

For large pollutant specific emission units, records of the monitored parameter must be made at a minimum of four times per hour, or once every 15 minutes. For other PSEUs (not large), records must be made at a minimum of once per 24 hours. See Attachment 5 to this document for the CAM Plan submitted by the applicant.

2.6 Dry Bulk Agricultural Commodity Standard (Bulk Ag Rule) Exemption for Temporary Storage Facilities On May 14, 2018, the State of Minnesota amended Minn. Stat. § 116.07 to provide an exemption from the Standards of Performance for Dry Bulk Agricultural Commodity Facilities (Minn. R. 7011.1000 – 7011.1015) for temporary storage facilities. The revisions to the statute include addition of the following requirements:

Minn. Stat. § 116.07, subd. 2c. Exemption from standards for temporary storage facilities subject to control. (a) A temporary storage facility located at a commodity facility that is required to be controlled under Minnesota Rules, part 7011.1005, subpart 3, is not subject to Minnesota Rules, parts 7011.1000 to 7011.1015. For all portable equipment and fugitive dust emissions directly associated with the temporary storage facility, it is determined that there is no applicable specific standard of performance.

(b) For the purposes of this subdivision, the following terms have the meanings given to them: (1) "temporary storage facility" means a facility storing grain that:

(i) uses an asphalt, concrete, or comparable base material; (ii) has rigid, self-supporting sidewalls; (iii) provides adequate aeration; and (iv) provides an acceptable covering; and


(2) "portable equipment" means equipment that is not fixed at any one spot and can be moved, including but not limited to portable receiving pits, portable augers and conveyors, and portable reclaim equipment directly associated with the temporary storage facility.

EFFECTIVE DATE. This section is effective the day following final enactment.

The temporary storage facility (TSF) at Green Plains Otter Tail, LLC includes a circular storage bunker located directly south of the ethanol production facility and a long oval-shaped storage bunker located adjacent to the circular bunker to the east. Each bunker is equipped with rigid sidewalls and fans for aeration, and a base consisting of packed-down class 5. During grain storage operations (typically fall through late spring), grain is unloaded from trucks and piled in the bunkers using portable receiving pits and augers, and then covered with large tarps. The tarps are held down with weights (tires) as well as the differential pressure caused by the aeration fans. During grain reclaim operations (typically spring through summer), the tarps are removed from the active sections of the storage piles, and grain is transferred from the piles to trucks using a front-end loader. Based on the definitions of “temporary storage facility” and “portable equipment” provided at Minn. Stat. § 116.07, subd. 2c(b), MPCA has determined that the temporary storage facility at Green Plains Otter Tail, LLC and its associated portable equipment would not be subject to the control equipment requirements or opacity standards at Minn. R. 7011.1000 – 7011.1015 if the Permittee constructed an asphalt, concrete, or comparable base material. The temporary storage operations at the facility would then be subject to the Visible Emission Restrictions for New Facilities at Minn. R. 7011.0110. The Permittee has elected to remove the TSF at Green Plains Otter Tail, LLC instead of making certain physical improvements (including upgrading the base material) to the TSF and the haul roads serving it, which may be required in order to achieve compliance with other applicable regulations. The permit contains a schedule of requirements that will result in compliance with all applicable requirements (including the Bulk Ag Rule) within three years of permit issuance.

2.7 Regulatory Overview Table 6. Regulatory overview of facility

Subject item* Applicable regulations Rationale TFAC 2 Total Facility

Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i)

Prevention of Significant Deterioration (PSD). Production and throughput limits, in addition to other limits in the permit, will restrict allowable emissions to below major source thresholds for New Source Review (NSR).

Title I Condition: Avoid major source under 40 CFR § 63.2

National Emission Standards for Hazardous Air Pollutants (NESHAP) for Source Categories. Production and throughput limits, in addition to other limits in the permit, will restrict allowable emissions to below major source thresholds for NESHAPs.

Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1-2, Minn. R. 7009.0010-7009.0090, Minn. Stat. § 116, subds. 4a & 9 (Title V modeling)

Ambient Air Quality Standards. Conditions for remodeling for demonstrating compliance with the PM10 National Ambient Air Quality Standards (NAAQS).

Minn. R. 7011.0150 Minnesota Standards of Performance for Preventing Particulate Matter Emissions from Becoming Airborne.


Subject item* Applicable regulations Rationale Minn. R. 7011.1005-7011.1010

Standards of Performance for Dry Bulk Agricultural Commodity Facilities. • Construction of the dry bulk agricultural commodity facility was after January 1, 1984; and • Annual commodity throughput of the facility is greater than 180,000 tons of grain.

COMG 6 Indoor Grain Receiving Limits

Title V modeling Ambient Air Quality Standards. Operating limits set at COMG 6 to reduce 24-hour average PM10 emission rates from indoor grain receiving. Limits were derived from computer dispersion modeling. PM10 modeling was required by the previous permit (11100077-004).

EQUI 4 Truck Ethanol Loadout


Prevention of Significant Deterioration (PSD). Requirement to use control equipment to reduce VOC emissions below PSD thresholds. See TREA 21 for more information on the control requirements.


NESHAP for Source Categories. Requirement to use control equipment to reduce HAP emissions below NESHAP major source thresholds. See TREA 21 for more information on the control requirements.

Minn. R. 7011.0715 Standards of Performance for post-1969 Industrial Process Equipment. Equipment for which there is no other promulgated performance standard is subject to the opacity and PM limits in this rule. Construction of the unit was on or after July 9, 1969.

EQUIs 6, 11, 14, 166, 167, and 168 Silo #3 Conveyor, Silo #4 Conveyor, Silo #5 Conveyor, Silo #3 Reclaim, Silo #4 Reclaim, and Silo #5 Reclaim

Minn. R. 7007.0800, subp. 2 Authorization to construct transfer conveyors for filling and reclaiming grain from storage silos #3, #4, and #5 using the flexibility provisions of this permit. Permit requires notification of installation for each unit. The construction authorization expires if construction has not begun within 5 years.

EQUIs 8 and 9 Corn Storage Silos #1 and #2

Minn. R. 7011.1005 Standards of Performance for Dry Bulk Agricultural Commodity Facilities. • Construction of the dry bulk agricultural commodity facility was after January 1, 1984; and • Annual commodity throughput of the facility is greater than 180,000 tons of grain.

EQUI 10 Corn Storage Silo #3


Prevention of Significant Deterioration (PSD). Authorization to construct a 576,255 bushel corn storage silo and avoid major source classification under PSD. Permit requires notification of installation for each unit. The construction authorization expires if construction has not begun within 5 years.



Subject item* Applicable regulations Rationale EQUI 13 Corn Storage Silo #4



Title V modeling Ambient Air Quality Standards. Operating restriction set at EQUI 13 prohibiting operation of the corn storage silo while the temporary flat storage facility (FUGI 11) is in place. Limit was derived from computer dispersion modeling. PM10 modeling was required by the previous permit (11100077-004).


EQUI 16 Corn Storage Silo #5



Title V modeling Ambient Air Quality Standards. Operating restriction set at EQUI 16 prohibiting operation of the corn storage silo while the temporary flat storage facility (FUGI 11) is in place. Limit was derived from computer dispersion modeling. PM10 modeling was required by the previous permit (11100077-004).


EQUI 18 Emergency Generator

40 CFR pt. 60, subp. IIII NSPS for Stationary Compression Ignition Internal Combustion Engines. Applicability criteria include: • emergency engine • commenced construction date after July 11, 2005; • manufacture date after April 1, 2006; and • displacement less than 30 liters per cylinder.

40 CFR pt. 63, subp. ZZZZ NESHAP for Stationary Reciprocating Internal Combustion Engines. EQUI 18 is a new affected source subject to 40 CFR pt. 63, subp. ZZZZ. Under 40 CFR § 63.6590(c) the engine meets the requirements 40 CFR pt. 63, subp. ZZZZ by meeting the requirements of 40 CFR pt. 60, subp. IIII and no further requirements apply under 40 CFR pt. 63, subp. ZZZZ.

Minn. R. 7011.2300 Standards of Performance for Stationary Internal Combustion Engines.


Subject item* Applicable regulations Rationale Title V modeling Ambient Air Quality Standards. Engine best management

practice (BMP) requirements to minimize PM10 impacts from EQUI 18. Requirement was derived from computer dispersion modeling. PM10 modeling was required by the previous permit (11100077-004).

EQUIs 35 and 36 Boilers 1 and 2

40 CFR pt. 60, subp. Dc Standards of Performance for Small-Industrial-Commercial-Institutional Steam Generating Units. • Construction of each unit was on or after June 9, 1989; • Each unit has a maximum design capacity of greater than or equal to 10 MMBtu/hr, but less than or equal to 100 MMBtu/hr; and • Each unit burns natural gas as defined in 40 CFR § 60.41c.

EQUI 55 DDGS Dryer with Multiclone


Prevention of Significant Deterioration (PSD). Requirement to use control equipment to reduce PM, PM10, PM2.5, CO, and VOC emissions below PSD thresholds. See TREA 25 for more information on the control requirements.



Title V modeling Ambient Air Quality Standards. Limit for PM10 set at STRU 26. Limit was derived from computer dispersion modeling. PM10 modeling was required by the previous permit (11100077-004).

Minn. R. 7011.0610 Standards of Performance for Direct Heating Equipment. • Construction of the unit was on or after July 9, 1969; • The unit burns gaseous fuel; • The facility is located outside of the Twin Cities; and • The facility has greater than 250 MMBtu/hr of indirect and direct heating equipment.

EQUI 56 DDGS Cooler


Prevention of Significant Deterioration (PSD). Requirement to use control equipment to reduce PM, PM10, and PM2.5 emissions below PSD thresholds. Requirement to vent fabric filter exhaust to the DDGS dryer combustion chamber (and indirectly to the RTO) to reduce VOC emissions below PSD thresholds. See TREA 25 and TREA 39 for more information on the control requirements.


NESHAP for Source Categories. Requirement to vent fabric filter exhaust to the DDGS dryer combustion chamber (and indirectly to the RTO) to reduce HAP emissions below NESHAP major source thresholds. See TREA 25 for more information on the control requirements.




Subject item* Applicable regulations Rationale EQUIs 58 and 59 200 Proof Tanks


Prevention of Significant Deterioration (PSD). Requirement to operate and maintain internal floating rooves to reduce VOC emissions below PSD thresholds.

Minn. R. 7011.0715 Standards of Performance for post-1969 Industrial Process Equipment. Equipment for which there is no other promulgated performance standard is subject to the opacity and PM limits in this rule. Construction of each unit was on or after July 9, 1969.

EQUIs 60, 61, and 62 Denaturant Storage Tank, Denatured Ethanol Tank 1, and Denatured Ethanol Tank 2

40 CFR pt. 60, subp. Kb Standards of Performance for Post-1984 Volatile Organic Liquid Storage Vessels. • Construction of each vessel was on or after July 23, 1984; • Capacity of each vessel is greater than or equal to 75 m3; and • Maximum true vapor pressure of liquid stored is greater than or equal to 3.5 kPa.

EQUI 108 Fire Pump

40 CFR pt. 60, subp. IIII Standards of Performance for Stationary Compression Ignition Internal Combustion Engines. EQUI 108 is a fire pump with a commenced construction date after July 11, 2005; manufacture date after July 1, 2006; and a displacement less than 30 liters per cylinder. The fire pump is certified by the manufacturer to meet NFPA 20 requirements.

40 CFR pt. 63, subp. ZZZZ NESHAP for Stationary Reciprocating Internal Combustion Engines. EQUI 108 is a new affected source subject to 40 CFR pt. 63, subp. ZZZZ. Under 40 CFR § 63.6590(c) the engine meets the requirements 40 CFR pt. 63, subp. ZZZZ by meeting the requirements of 40 CFR pt. 60, subp. IIII and no further requirements apply under 40 CFR pt. 63, subp. ZZZZ.

Title V modeling Ambient Air Quality Standards. Engine best management practice (BMP) requirements to minimize PM10 impacts from EQUI 108. Requirement was derived from computer dispersion modeling. PM10 modeling was required by the previous permit (11100077-004).

Minn. R. 7011.2300 Standards of Performance for Stationary Internal Combustion Engines.

EQUI 116 Rail Ethanol Loadout


Prevention of Significant Deterioration (PSD). Requirement to use control equipment to reduce VOC emissions below PSD thresholds. See TREA 21 for more information on the control requirements.





Subject item* Applicable regulations Rationale EQUIs 117 and 118 Corn Dump Pit/Auger 1 (Uncaptured) and Corn Dump Pit/Auger 2 (Uncaptured)


EQUIs 129, 130, 131, 132, 133, 134, 135, and 138 DDGS Storage Conveyors 1-4, DDGS Storage Elevator, DDGS Reclaim via Front End Loader, DDGS Reclaim Dump Pit, and DDGS Load Spout (Truck/Rail, Uncaptured)


EQUI 151 Gasoline Tank (1,000 gal)

40 CFR pt. 63, subp. CCCCCC National Emission Standards for Hazardous Air Pollutants for Gasoline Dispensing Facilities. • Construction of the gasoline dispensing facility (GDF) was on or before November 9, 2006 (existing); and • Monthly throughput of the GDF is less than 10,000 gallons of gasoline.


EQUI 152 Gasoline Dispensing


Prevention of Significant Deterioration (PSD). Limits on gasoline throughput to keep VOC emissions below PSD thresholds.


NESHAP for Source Categories. Limits on gasoline throughput to keep HAP emissions below NESHAP major source thresholds.


EQUI 169 Boiler Make-Up Air Heater

Minn. R. 7011.0610 Standards of Performance for Direct Heating Equipment. • Construction of the unit was on or after July 9, 1969; • The unit burns gaseous fuel; • The facility is located outside of the Twin Cities; and • The facility has greater than 250 MMBtu/hr of indirect and direct heating equipment.


Subject item* Applicable regulations Rationale FUGIs 7, 8, and 9 Cooling Tower Cells 1, 2, and 3


FUGI 11 Grain Receiving and Conveying at Temporary Storage Facility

Title V modeling Ambient Air Quality Standards. Operating limits for reducing PM10 emissions at FUGI 11. Limits were derived from computer dispersion modeling. PM10 modeling was required by the previous permit (11100077-004).

Minn. R. 7011.0110 Visible Emission Restrictions for post-1977 Emissions Facilities. Emissions facilities for which there is no other promulgated performance standard is subject to the opacity limit in this rule. Construction of the emission facility was after January 31, 1977.


FUGI 15 Equipment Leaks

40 CFR pt. 60, subp. VV Standards of Performance for Equipment Leaks of VOC in the Synthetic Organic Chemicals Manufacturing Industry (Post-1981, Pre-2006). • Commence construction date of the synthetic organic chemicals manufacturing equipment was on or after January 5, 1981, and on or before November 7, 2006; and • The facility produces ethanol (listed under 40 CFR § 60.489).

FUGI 16 Wetcake -AOS


FUGI 17 Paved Roads

Title V modeling Ambient Air Quality Standards. Truck traffic operating limits for reducing PM10 emissions from paved haul roads. Limits were derived from computer dispersion modeling. PM10 modeling was required by the previous permit (11100077-004).


FUGI 18 Unpaved Roads


FUGI 19 Grain Reclaim Operations at Temporary Storage Facility

Title V modeling Ambient Air Quality Standards. Operating limits for reducing PM10 emissions at FUGI 11. Limits were derived from computer dispersion modeling. PM10 modeling was required by the previous permit (11100077-004).

Minn. R. 7011.0110 Visible Emission Restrictions for post-1977 Emissions Facilities. Emissions facilities for which there is no other promulgated performance standard is subject to the opacity limit in this rule. Construction of the emission facility was after January 31, 1977.



Subject item* Applicable regulations Rationale FUGI 20 Wind Erosion at Temporary Storage Facility


STRU 7 Grain Receiving with Baghouse


Prevention of Significant Deterioration (PSD). Limits taken to avoid major source classification under PSD for emissions of PM, PM10, and PM2.5. The limits are written to apply to all existing, new, or modified units venting to STRU 7. They are 3-hour average limits due to the compliance demonstration method (average of three performance test runs). See TREA 7 for control equipment requirements that limit PM, PM10, and PM2.5 emissions.



STRU 22 Hammermill with Baghouse




Minn. R. 7011.0715 Standards of Performance for post-1969 Industrial Process Equipment. Equipment for which there is no other promulgated performance standard is subject to the opacity and PM limits in this rule. Construction of the units was on or after July 9, 1969 (applies to equipment not subject to the Minnesota Standards of Performance for Dry Bulk Agricultural Commodity Facilities).



Subject item* Applicable regulations Rationale STRU 23 DDGS Loadout with Baghouse





STRU 24 Fermentation with CO2 Scrubber


Prevention of Significant Deterioration (PSD). Limits taken to avoid major source classification under PSD for emissions of VOC. The limit is written to apply to all existing, new, or modified units venting to STRU 24. It is a 3-hour average limit due to the compliance demonstration method (average of three performance test runs). See TREA 22 for control equipment requirements that limit VOC emissions.


NESHAP for Source Categories. Requirement to use control equipment to reduce HAP emissions below NEHSAP major source thresholds for both total and individual HAPs. The requirement is written to apply to all existing, new, or modified units venting to STRU 24. See TREA 22 for control equipment requirements that limit HAP emissions.

Minn. R. 7011.0715 Standards of Performance for post-1969 Industrial Process Equipment. Equipment for which there is no other promulgated performance standard is subject to the opacity and PM limits in this rule. Construction of the units was on or after July 9, 1969.

STRU 25 Distillation (Vent Gas) Scrubber)


Prevention of Significant Deterioration (PSD). Limits taken to avoid major source classification under PSD for emissions of VOC. The limit is written to apply to all existing, new, or modified units venting to STRU 25. It is a 3-hour average limit due to the compliance demonstration method (average of three performance test runs). See TREA 23 for control equipment requirements that limit VOC emissions.


Subject item* Applicable regulations Rationale Title I Condition: Avoid major source under 40 CFR § 63.2

NESHAP for Source Categories. Requirement to use control equipment to reduce HAP emissions below NEHSAP major source thresholds for both total and individual HAPs. The requirement is written to apply to all existing, new, or modified units venting to STRU 25. See TREA 23 for control equipment requirements that limit HAP emissions.

Minn. R. 7011.0715 Standards of Performance for post-1969 Industrial Process Equipment. Equipment for which there is no other promulgated performance standard is subject to the opacity and PM limits in this rule. Construction of the units was on or after July 9, 1969.

STRU 26 DDGS with Thermal Oxidizer


Prevention of Significant Deterioration (PSD). Limits taken to avoid major source classification under PSD for emissions of PM, PM10, PM2.5, CO, and VOC. They are 3-hour average limits due to the compliance demonstration method (average of three performance test runs). See TREA 25 for control equipment requirements that limit VOC emissions.


NESHAP for Source Categories. Requirement to use control equipment to reduce HAP emissions below NEHSAP major source thresholds for both total and individual HAPs. See TREA 25 for control equipment requirements that limit HAP emissions.


STRU 79 RTO Bypass Stack


Prevention of Significant Deterioration (PSD). RTO bypass conditions and operating hour limits taken to avoid major source classification under PSD for multiple pollutants.


NESHAP for Source Categories. RTO bypass conditions and operating hour limits taken to avoid NEHSAP major source thresholds for both total and individual HAPs.

STRU 80 DDGS Cooler Baghouse Stack


Prevention of Significant Deterioration (PSD). RTO and dryer burner bypass conditions and operating hour limits taken to avoid major source classification under PSD for multiple pollutants.


NESHAP for Source Categories. RTO and dryer burner bypass conditions and operating hour limits taken to avoid NEHSAP major source thresholds for both total and individual HAPs.

TREA 7 Grain Receiving Baghouse


Prevention of Significant Deterioration (PSD). Control efficiency and other operating parameter requirements to limit PM/PM10/PM2.5 PTE to avoid major source classification under PSD. The limits are written to apply to all existing, new, or modified units venting to STRU 7. Permit specifies that replacement fabric filters must meet the TREA 7 requirements.


Subject item* Applicable regulations Rationale 40 CFR pt. 64 Compliance Assurance Monitoring (CAM). Pollutant-specific

emissions unit (PSEU) controlled by TREA 7 is an “other” PSEU subject to monitoring every 24 hours.



TREA 8 Hammermill Baghouse



40 CFR pt. 64 Compliance Assurance Monitoring (CAM). Pollutant-specific emissions unit (PSEU) controlled by TREA 8 is an “other” PSEU subject to monitoring every 24 hours.



TREA 11 DDGS Loadout Baghouse






Subject item* Applicable regulations Rationale TREA 21 Flaring


Prevention of Significant Deterioration (PSD). Control efficiency and other operating parameter requirements to limit VOC PTE to avoid major source classification under PSD.


NESHAP for Source Categories. Control efficiency and other operating parameter requirements to limit HAP PTE to avoid major source classification under NESHAPs.


TREA 22 CO2 (Fermentation) Scrubber


Prevention of Significant Deterioration (PSD). Control efficiency and other operating parameter requirements to limit VOC PTE to avoid major source classification under PSD. The limits are written to apply to all existing, new, or modified units venting to STRU 24. Permit specifies that replacement scrubbers must meet the TREA 22 requirements.


NESHAP for Source Categories. Control efficiency and other operating parameter requirements to limit HAP PTE to avoid major source classification under NESHAPs. The limits are written to apply to all existing, new, or modified units venting to STRU 24. Permit specifies that replacement scrubbers must meet the TREA 22 requirements.


TREA 23 Vent Gas (Distillation) Scrubber


Prevention of Significant Deterioration (PSD). Control efficiency and other operating parameter requirements to limit VOC PTE to avoid major source classification under PSD. The limits are written to apply to all existing, new, or modified units venting to STRU 25. Permit specifies that replacement scrubbers must meet the TREA 23 requirements.


NESHAP for Source Categories. Control efficiency and other operating parameter requirements to limit HAP PTE to avoid major source classification under NESHAPs. The limits are written to apply to all existing, new, or modified units venting to STRU 25. Permit specifies that replacement scrubbers must meet the TREA 23 requirements.


TREA 25 Thermal Oxidizer


Prevention of Significant Deterioration (PSD). Control efficiency and other operating parameter requirements to limit VOC PTE to avoid major source classification under PSD.


NESHAP for Source Categories. Control efficiency and other operating parameter requirements to limit HAP PTE to avoid major source classification under NESHAPs.




Subject item* Applicable regulations Rationale TREA 39 DDGS Cooler Baghouse


Prevention of Significant Deterioration (PSD). Control efficiency and other operating parameter requirements to limit PM/PM10/PM2.5 PTE to avoid major source classification under PSD. Permit specifies that replacement fabric filters must meet the TREA 39 requirements.



*Location of the requirement in the permit (e.g., EQUI 1, STRU 2, etc.).

3. Technical information

3.1 Calculations of potential to emit (PTE) Attachment 1 to this TSD contains detailed spreadsheets and supporting information prepared by the MPCA and the Permittee. The facility is permitted to produce 65.0 million gallons of undenatured ethanol. The Permittee has estimated annual grain throughput, DDGS production, and denaturant throughput based on this permit limit. Since there is some fluctuation in actual production yields, the undenatured ethanol production limit alone does not sufficiently limit the grain and DDGS annual throughputs. Additionally, there are no enforceable conditions pertaining to denaturant blending rates. Federally enforceable limitations on annual grain throughput, DDGS production, and denaturant throughput have been added to the permit, in order to ensure that the total facility potential emissions remain below NSR and NESHAPs major source thresholds. STRUs 7, 22, and 23, Uncaptured Grain/DDGS Handling Emissions Controlled PM, PM10 and PM2.5 emission rates (lb/hr) and annual limited emissions (tpy) for the units venting to STRUs 7, 22, and 23 were calculated based on the permitted emission rate limits for these pollutants. Unrestricted PTE for these pollutants was calculated based on available emission factors in AP-42 Section 9.9.1. Uncaptured grain and DDGS handling PM, PM10, and PM2.5 emission rates and unrestricted emissions were calculated based on equipment capacity, and available emission factors in AP-42 Section 9.9.1. Annual limited emissions for these units were calculated using the same emission factors, along with the assumed annual grain and DDGS throughput. Cooling Towers PM, PM10 and PM2.5 emissions for the cooling towers were calculated using the approach detailed in the September 9, 2013 Technical Memorandum from the New Mexico Environment Air Quality Bureau (NMDEQ). Emergency Engines (EQUI 18 and EQUI 108) Criteria pollutant emissions for the emergency engines were calculated based on manufacturer’s specifications, greenhouse gas emissions were calculated using emission factors from 40 CFR pt. 98 (Tables C-1 and C-2), and HAP emissions were calculated using available emission factors from AP-42 Section 3.3. Limited annual emissions were calculated assuming 500 operating hours per year, per the 1995 EPA Emergency Generator Memo.


Boilers and Boiler Make-Up Air Heater Criteria pollutant emissions for the boilers and make-up air heater were calculated using available emission factors from AP-42 Sections 1.4 (natural gas combustion) and 1.5 (liquefied petroleum gas combustion), greenhouse gas emissions were calculated using emission factors from 40 CFR pt. 98 (Tables C-1 and C-2), and HAP emissions were calculated using available emission factors from AP-42 Section 1.4. Ethanol Loadout/Flare Ethanol loadout VOC and HAP emissions were calculated using equations in AP-42 Section 5.2, and HAP contents of the gasoline denaturant. The overall control efficiency has been calculated assuming a capture efficiency of 98.7%, which is based on the capture efficiency listed in AP-42 Section 5.2 for a tanker truck passing the NSPS-level annual test. The loadout flare emissions were calculated using available emission factors from AP-42 Sections 1.4 and 13.5, and 40 CFR pt. 98 (greenhouse gases). STRUs 24 and 25 The controlled VOC emission rate (lb/hr) and limited annual emissions (tpy) from the units venting to the scrubbers were calculated based on the VOC emission rate limits in the permit (11.28 lb/hr from STRU 24 and 4.75 lb/hr from STRU 25). Controlled HAP emission rates (lb/hr) and limited annual emissions (tpy) from units venting to the scrubbers were calculated based on emission rates measured during the most-recent stack test. An engineering factor of 1.25 was used as a conservative measure. Unrestricted annual emissions were calculated for VOC and HAPs based on the estimated scrubber control efficiencies for these compounds, as discussed further in Section 3.13 of this TSD. STRU 26/RTO/DDGS Dryer and Cooler The controlled VOC, PM, PM10, PM2.5, and CO emission rates (lb/hr) and limited annual emissions (tpy) from the units venting to the RTO were calculated based on the emission rate limits for these compounds in the permit (5.0 lb/hr VOC, 5.15 lb/hr PM/PM10/PM2.5, and 12.91 lb/hr CO). Controlled emission rates of certain HAP compounds (lb/hr) and limited annual emissions (tpy) from units venting to the RTO were calculated based on emission rates measured during the most-recent stack test. An engineering factor of 1.25 was used as a conservative measure. Additional HAP emissions were calculated using available emission factors in AP-42 Section 1.4. Unrestricted annual emissions were calculated for VOC, certain HAP compounds, CO, and PM/PM10/PM2.5 based on the estimated RTO control efficiencies for each compound. NOX emissions were calculated based on historic NOX emission rate data measured from this stack, and SO2 emissions were calculated based on an assumed 3.0 lb/hr SO2 emission rate. The emission factors for NOX and SO2 from STRU 26 must be verified through performance testing once every 10 years. Uncontrolled emissions from the dryer (RTO bypass) were estimated using available emission factors from AP-42 Section 1.4. Controlled PM/PM10/PM2.5 and uncontrolled VOC and HAP emissions from the DDGS cooler (dryer burner and RTO bypass) were estimated using measured fabric filter-controlled emission rates from DDGS cooler stacks at similar Green Plains facilities in Superior, IA and Lakota, IA. For many pollutants, as a conservative and simplifying measure, the annual facility total potential emissions reflect emissions from 8,760 hours under RTO controlled operation of the dryer and cooler plus 50 hours of dryer startup bypass and 100 hours of DDGS cooler bypass. The exceptions to this include natural gas combustion HAP emissions (which are already assumed to be emitted at maximum heat input capacity, 8,760 hours per year), and RTO combustion criteria pollutants for which the STRU 26 emission rates already represent worst-case. Equipment Leaks Fugitive emissions from equipment leaks were calculated using EPA’s Protocol for Equipment Leak Emission Estimates (EPA-453/R-95-017). Volatile Organic Liquid Storage Tanks


Emissions from volatile organic liquid storage tanks were calculated using EPA’s TANKS 4.09d software. Paved and Unpaved Haul Roads Emissions from truck traffic on paved and unpaved haul roads were calculated using available emission factors from AP-42 Section 13.2. Wetcake Emissions from wetcake production and storage were calculated using the results of a 2004 stack test at the DENCO II, LLC facility in Morris, MN. Temporary Storage Facility Emissions from temporary flat storage operations were calculated using various available emission factors from AP-42 Section 9.9.1. A control efficiency of 80% was assumed for grain handling operations controlled by a proposed mineral oil application system for dust suppression. This control efficiency is based on information contained in the following resources: AP-42 Section 9.9.1, References 57 and 61 of the Background document for AP-42 Section 9.9.1, USEPA reference document EPA-453/R-94-049, grain elevators calculations guidance document from the Texas Commission on Environmental Quality, and a letter from Thomas O’Connor of the National Grain and Feed Association to USEPA on June 30, 1997. Gasoline Storage Tank and Gasoline Dispensing Emissions from the gasoline storage tank and gasoline dispensing were calculated based on available emission factors from AP-42 Section 5.2, EPA’s TANKS 4.09d software, and HAP content data presented in USEPA reference document EPA-453/R-94-002a.

3.2 Aboveground Storage Tanks An evaluation of the applicability of 40 CFR pt. 60, subp. Kb (NSPS for post-July 23, 1984 Volatile Organic Liquid Storage Vessels) and Minn. R. 7011.1505 (Minnesota Standards of Performance for post-July 7, 1969 Storage Vessels) was performed for each of the aboveground storage tanks at the facility. Summaries of these evaluations are provided in Tables 7 and 9 below. As shown in Table 7, the four fuel tanks (gasoline tank and diesel tanks #1, #2, and #3) used for fueling off-road vehicles at the facility and the corrosion inhibitor tank are not subject to 40 CFR pt. 60, subp. Kb because these three tanks have capacities less than 75 m3. The 200-proof tanks (EQUI 58 and EQUI 59) are tanks that were identified in previous permits as being subject to 40 CFR pt. 60, subp. Kb. During this permit action, it was determined that these two tanks meet the definition of “Process Tank” at 40 CFR § 60.111b, and thus are not “Storage Vessels” subject to this standard, as shown in Table 7. This determination is consistent with the EPA determination dated 11/20/2007 “Process Tanks Defined, Control Number 0800041). While tanks EQUI 58 and EQUI 59 are not subject to 40 CFR pt. 60, subp. Kb, the Permittee has elected to continue to operate and maintain the internal floating rooves for each tank in order to reduce VOC emissions at the facility. The permit contains requirements to continue inspecting the internal floating rooves at a frequency consistent with the NSPS. There has been no change to the applicability of 40 CFR pt. 60, subp. Kb to the denaturant tank (EQUI 60) and the two denatured ethanol tanks (EQUI 61 and EQUI 62) as a result of the applicability evaluation for this standard. These tanks are all subject to 40 CFR pt. 60, subp. Kb because they were constructed after July 24, 1984, have capacities greater than 75 m3, store volatile organic liquids, and do not meet any of the exemption criteria listed in the standard. Table 7. 40 CFR pt. 60, subp. Kb Applicability Determination


Tank ID Material Stored Capacity, m3

Max True Vapor Pressure (VP), kPa 1

Is capacity ≥ 75 m3 and constructed after July 23, 1984?

Exemption: 1) Capacity ≥ 151 m3 and VP < 3.5 kPa; or 2) 75 m3 ≤ Capacity < 151 m3 and VP < 15 kPa? (Y/N)

Exemption: Process Tank as defined at 40 CFR § 60.111b? (Y/N) 2

Subject to standard? (Y/N)

EQUI 58 (TK001) 200-proof ethanol 600 4.06 Yes No Yes

No; process tank

EQUI 59 (TK002) 200-proof ethanol 600 4.06 Yes No Yes

No; process tank

EQUI 60 (TK003)

Denaturant (gasoline) 193 33.7 Yes No No Yes

EQUI 61 (TK004)

Denatured ethanol 3,790 33.7 Yes No No Yes

EQUI 62 (TK005)

Denatured ethanol 3,790 33.7 Yes No No Yes

Gasoline Tank Gasoline 3.79 33.7 No N/A No

No; capacity < 75 m3

Diesel Tank #1 Diesel fuel 3.79 0.262 No N/A No






Corrosion Inhibitor Tank

Corrosion inhibitor (2-butoxyethanol, diethoxymethane, dodecenylsuccinic anhydride, ethylene glycol) 1.89 6.23 No N/A No


1. Maximum true vapor pressure (VP) is defined as the equilibrium partial pressure exerted by the volatile organic compounds in the stored volatile organic liquid (VOL) at the temperature equal to the highest calendar-month average of the VOL storage temperature for VOL's stored above or below the ambient temperature or at the local maximum monthly average temperature as reported by the National Weather Service for VOL's stored at the ambient temperature. The vapor pressure used in the Tanks program is a different value based on a different averaging period.

2. See EPA determination dated 11/20/2007 Process Tanks Defined, Control Number: 0800041 and the definition of “process tank” at 40 CFR § 60.111b.

Table 8 below contains a summary of the control devices installed at the tanks subject to 40 CFR pt. 60, subp. Kb. Table 8. Controls Required by 40 CFR pt. 60, subp. Kb

https://cfpub.epa.gov/adi/index.cfm?fuseaction=home.dsp_show_file_contents&CFID=66703865&CFTOKEN=44684061&id=0800041

https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.ecfr.gov%2fcgi-bin%2ftext-idx%3fSID%3d19a2ab36851fbcaa5e386d60b86353d5%26mc%3dtrue%26node%3dsp40.7.60.k_0b%26rgn%3ddiv6%23se40.7.60_1111b&c=E,1,vGZznYknRVkaKoMzmceGlFYudJnBKaUjHwUD4XzJ2Scald-PmyxL9nFkGnGorfU04vuwphE6rbMJJTYOORQ3BxwV3m11vQZm1DLJ7OkojgdJCEPQJkRtLLqTag,,&typo=1


Tank ID Material Stored

Capacity, m3

Max True Vapor Pressure (VP), kPa

1) Capacity ≥ 151 m3 and 5.2 kPa ≤ VP < 76.6 kPa; or 2) 75 m3 ≤ Capacity < 151 m3 and 27.6 ≤ VP < 76.6 kPa? (Y/N)

Controls Required? (Y/N)

Closure Device Installed (40 CFR § 60.113b(a) (1)(ii))

Testing and Procedures (40 CFR § 60.113b)

EQUI 60 (TK003)

Denaturant (gasoline) 193 33.7 Yes (criteria #1)

Yes; internal floating roof (installed)

(B) – Double wiper seal

(a)(2) annual inspection; and (a)(4) 10-year inspection

EQUI 61 (TK004)

Denatured ethanol 3,790 33.7 Yes (criteria #1)




EQUI 62 (TK005)

Denatured ethanol 3,790 33.7 Yes (criteria #1)




Following the evaluation of the applicability of 40 CFR pt. 60, subp. Kb to the aboveground storage tanks at the facility, an additional evaluation of the applicability of Minn. R. 7011.1505 (Minnesota Standards of Performance for Storage Vessels was made for these tanks. Table 9 below contains a summary of this applicability determination. As shown in Table 9, the 200-proof tanks were determined to not be subject to Minn. R. 7011.1505 because these tanks store non-petroleum liquids, the gasoline tank was determined not to be subject to the standard because its capacity is less than 2,000 gallons, and the three diesel tanks and the corrosion inhibitor tank were determined not to be subject to the standard because their capacities are less than 2,000 gallons and because diesel fuel oils No. 2-D and 4-D and the corrosion inhibitor compounds are not included in the definition of petroleum liquid at Minn. R. 7011.1500, subp. 8. The denaturant tank (EQUI 60) and the two denatured ethanol tanks (EQUI 61 and EQUI 62) have each been determined to be subject to the requirements of Minn. R. 7011.1505, subp. 3(C)(1) because these storage vessels each have capacities greater than 40,000 gallons, were each constructed after June 11, 1973, and store petroleum liquids with vapor pressures greater than 78 mm Hg, but less than 570 mmHg. These tanks meet this requirement because they are each equipped with internal floating rooves, as required by 40 CFR pt. 60, subp. Kb. Table 9. Minn. R. 7011.1505 Applicability Determination


Petroleum liquid 1? (Y/N)

Capacity (gal)

Max Vapor Press. (psia)

Post-June 11, 1973? (Y/N)

Capacity ≤ 2,000 gal? (Minn. R. 7011.1505, subp. 3(A)) (Y/N)

2,000 gal < Capacity ≤ 40,000 gal? (Minn. R. 7011.1505, subp. 3(B)) (Y/N)

Capacity > 40,000 gal? (Minn. R. 7011.1505, subp. 3(C)) (Y/N)


EQUI 58 (TK001)

200-proof ethanol No 158,600 0.59 Yes No No Yes

No; non-petroleum liquid

EQUI 59 (TK002)

200-proof ethanol No 158,600 0.59 Yes No No Yes

No; non-petroleum liquid

EQUI 60 (TK003)

Denaturant (gasoline) Yes 51,000 4.88 Yes No No Yes

Yes; Minn. R. 7011. 1505, subp. 3(C)(1)



Petroleum liquid 1? (Y/N)

Capacity (gal)

Max Vapor Press. (psia)

Post-June 11, 1973? (Y/N)

Capacity ≤ 2,000 gal? (Minn. R. 7011.1505, subp. 3(A)) (Y/N)

2,000 gal < Capacity ≤ 40,000 gal? (Minn. R. 7011.1505, subp. 3(B)) (Y/N)

Capacity > 40,000 gal? (Minn. R. 7011.1505, subp. 3(C)) (Y/N)


EQUI 61 (TK004)

Denatured ethanol Yes 1,000,000 4.88 Yes No No Yes

Yes; Minn. R. 7011. 1505, subp. 3(C)(1)

EQUI 62 (TK005)

Denatured ethanol Yes 1,000,000 4.88 Yes No No Yes

Yes; Minn. R. 7011. 1505, subp. 3(C)(1)

Gasoline Tank Gasoline Yes 1,000 4.88 Yes Yes No No

No; capacity < 2,000 gal

Diesel Tank #1 Diesel fuel No 1,000 0.038 Yes Yes No No

No; capacity < 2,000 gal

Diesel Tank #2 Diesel fuel No 580 0.038 Yes Yes No No

No; non-petroleum liquid and capacity < 2,000 gal

Diesel Tank #3 Diesel fuel No 685 0.038 Yes Yes No No


Corr. Inhibitor Tank

Corrosion Inhibitor (see Table 7 above) No 500 0.903 Yes Yes No No


1. As defined at Minn. R. 7011.1500, subp. 8, "Petroleum liquids" means petroleum, condensate, and any finished or intermediate products manufactured in a petroleum refinery but does not mean number 2 through number 6 fuel oils as specified in A.S.T.M. D396-69, gas turbine fuel oils Numbers 2-GT through 4-GT as specified in A.S.T.M. D2880-71, or diesel fuel oils Numbers 2-D and 4-D as specified in A.S.T.M. D975-68.

3.3 Grain Elevators

An evaluation of the applicability of 40 CFR pt. 60, subp. DD (NSPS for Grain Elevators) was performed during this permit action. As specified in 40 CFR § 60.300, 40 CFR pt. 60, subp. DD applies to any grain terminal elevator or grain storage elevator constructed, modified, or reconstructed on or after August 3, 1978. The facility does not meet the definition of “grain storage elevator” at 40 CFR § 60.301(f) because the grain elevator is not at a dry mill used to produce products for human consumption. Table 10 below provides a summary of the comparison between the facility’s permanent storage capacity and the permanent storage capacity threshold for “grain terminal elevators” as defined at 40 CFR § 60.301(c). As shown in Table 10, the permanent storage capacity of the existing facility (corn storage silos #1 and #2, only) and the permanent storage capacity following the addition of corn storage silos #3, #4, and #5 does not exceed 2.5 million bushels. The grain elevator does not meet the definition of “grain terminal elevator” at 40 CFR § 60.301(c); therefore, the facility is not subject to 40 CFR pt. 60, subp. DD.


Table 10. 40 CFR pt. 60, subp. DD Applicability Determination

Subject Item Description Permanent Storage Capacity (bu)

EQUI 8 (EU058) Corn Storage Silo #1 308,373 EQUI 9 (EU059) Corn Storage Silo #2 308,373 Total permanent storage capacity of existing facility 616,746 EQUI 10 (EU060) Corn Storage Silo #3 576,255 EQUI 13 (EU063) Corn Storage Silo #4 629,750 EQUI 16 (EU066) Corn Storage Silo #5 629,750 Total permanent storage capacity following addition of corn storage silos #3, #4, and #5 2,452,501 40 CFR pt. 60, subp. DD permanent storage capacity applicability threshold for grain terminal elevators (see definition of “grain terminal elevator” at 40 CFR § 60.301(c)). 2,500,000 Is 40 CFR pt. 60, subp. DD applicable to facility? No

3.4 Dispersion modeling

The original Part 70 permit (permit #11100077-004, issued February 15, 2013) contained a requirement to complete air dispersion modeling to show modeled compliance with the PM10 national ambient air quality standards (NAAQS) and Minnesota ambient air quality standards (MAAQS), and to submit the air dispersion modeling results with the Part 70 reissuance application, as described in Table 11 below. Table 11. Air Dispersion Modeling Requirements from Air Permit #11100077-004 What to do Why to do it Modeling at Reissuance: The Permittee shall submit an assessment with the reissuance application (due as stated elsewhere in this permit) that addresses any changes made during the permit term that did not require a permit amendment but that affect any modeled parameter or emission rate (including adding sources beyond those documented in Appendix III) and were not assessed in a later modeling submittal. The information in this submittal shall be the same as listed in the requirement entitled “Remodeling Submittal”.

Minn. Stat. Section 116.07, subds. 4a & 9; Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M); Minn. R. 7007.0800, subps. 1, 2, & 4; Minn. R. 7009.0010-7009.0080

Remodeling Submittal: The Permittee must submit to the Commissioner for approval changes meeting the above criteria and must wait for a written approval before making such changes. For minor amendments, written approval of the modeling may be given before permit issuance; however, this approval applies only to the modeling and not to any other changes. The information submitted must include, for stack and vent sources, source emission rate, location, height, diameters, exit velocity, exit temperature, discharge direction, use of rain caps or rain hats, and, if applicable, locations and dimensions of nearby buildings. For non-stack/vent sources, this includes the source emission rate, location, size and shape, release height, and, if applicable, any emission rate scalars, and the initial lateral dimensions and initial vertical dimensions and adjacent building heights. The plume dispersion characteristics due to the revisions of the information must be equivalent or better than the dispersion characteristics modeled June 2006. The Permittee shall demonstrate this equivalency in the proposal. If the information does not demonstrate equivalent or better dispersion characteristics, or if a conclusion cannot readily be made about the dispersion, the Permittee must submit full remodeling.

Minn. Stat. Section 116.07, subds. 4a & 9; Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M); Minn. R. 7007.0800, subps. 1, 2, & 4; Minn. R. 7009.0010-7009.0080

Several operating restrictions were assumed when the modeling was conducted, so these have been incorporated as permit limits (e.g., hours of operation, daily grain throughput, etc.) in the draft/proposed Part 70 Reissuance permit. In addition, per MPCA practice, a table of the modeled parameters has been added to the permit as an appendix. Other than the specific operating restrictions mentioned above, the parameters listed in Appendix B of the permit describe the operation of the facility at maximum capacity. In other words, the flow rates and temperatures listed in Appendix B represent the minimum parameters at the maximum emission rates. The MPCA does not require any specific compliance demonstration with these


parameters because they are worst-case conditions. The purpose of listing the parameters in the permit appendix is to provide a benchmark for determining if and when additional modeling is required. The modeling report submitted on April 20, 2018 was based on the assumed operation of the temporary grain storage facility (TSF), also referred to as “flat storage” and “the corn bunker”. The emissions from grain receiving and pile filling, pile reclaim, and wind erosion of the pile have been designated as FUGIs 11 (Grain Receiving and Conveying at Temporary Storage Facility), 19 (Grain Reclaim Operations at Temporary Storage Facility), and 20 (Wind Erosion at Temporary Storage Facility), respectively. This modeling submittal is listed under “Operating Condition 1)” in Table 12 below. In addition to operating restrictions on daily grain throughput received at the grain receiving building, the modeling submittal included plans to pave the haul roads serving the TSF as well as plans to install a food-grade mineral oil application system at the TSF to suppress dust during outdoor grain handling operations. On an averaging basis consistent with the 24-hour PM10 NAAQS, the modeling results demonstrated a maximum 24-hour average PM10 ambient air concentration of 142 µg/m3 under these operating conditions, which is 94.7% of the standard (150 µg/m3). In a May 23, 2018 meeting between MPCA staff and Green Plains Otter Tail LLC management, it was communicated to MPCA that Green Plains Otter Tail LLC would prefer to cease operation of the TSF rather than make the capital improvements identified in the April 20, 2018 modeling submittal. Under the revised operating scenario, grain silos #3, #4, and #5 would be installed and operated in accordance with the Part 70 permit application that was received on May 21, 2012, and the TSF would be removed from the facility. Revised air dispersion modeling results were submitted to MPCA on September 28, 2018, which demonstrated a maximum 24-hour average PM10 ambient air concentration of 126 µg/m3 under these operating conditions, which is 84.0% of the standard (150 µg/m3). This modeling submittal is listed under “Operating Condition 2)” in Table 12 below.

Table 12. PM10 Modeling Results

Pollutant Operating Conditions Modeling Date

Averaging Period

NAAQS (µg/m3)

Maximum Modeled Concentration (µg/m3)

Percent of Standard (%) Tier

PM10 1) Operation of TSF (FUGIs 11, 19, and 20)

4/20/18 (report dated 4/18/18)

24-hour 150 142 94.7% *This permit requires remodeling 2) Operation of

storage silos #3, #4, and #5 (EQUIs 10, 13, and 16) with no TSF

9/28/18 24-hour 150 126 84.0%

Both modeling submittals included several limiting assumptions for reducing PM10 impacts. Many of these assumptions have been incorporated into the permit as operating limits, as summarized in Table 13 below. Table 13. Summary of New Operating Limits Derived from PM10 Air Dispersion Modeling Subject Item Operating Limit COMG 6 – Indoor Grain Receiving Limits

Grain received at the grain receiving building ≤ 7,250 ton/day (includes grain reclaimed from flat storage) Indoor grain receiving hours: Mon-Fri, 7 AM-7 PM between Dec. and Aug. Mon-Sat, 7 AM-7 PM between Sept. and Nov. Daily number of straight trucks ≤ 14 per day

EQUI 13 – Corn Storage Silo #4 EQUI 13 may not be operated while any temporary storage facility (TSF) is in place.


EQUI 16 – Corn Storage Silo #5 EQUI 16 may not be operated while any TSF is in place. FUGI 11 – Grain Receiving and Conveying at Temporary Storage Facility

Grain received at the temporary storage facility ≤ 7,280 ton/day TSF grain receiving hours: Mon-Fri, 7 AM-7 PM between Jul. and Aug. Mon-Sat, 7 AM-7 PM between Sept. and Nov. Grain may not be received at the TSF between Dec. and Jun. Grain received outdoors limited to hopper trucks only.

FUGI 19 – Grain Reclaim Operations at Temporary Storage Facility

Grain reclaimed from the TSF ≤ 3,080 ton/day TSF grain reclaim hours: Mon-Fri, 7 AM-7 PM between Mar. and Jun. Grain may not be reclaimed from the TSF between Jul. and Feb.

STRU 7 – Grain Receiving with Baghouse

STRU 7 equipment operating hours: Mon-Fri, 7 AM-7 PM between Dec. and Aug. Mon-Sat, 7 AM-7 PM between Sept. and Nov.

STRU 23 – DDGS Loadout with Baghouse

STRU 23 equipment operating hours: Mon-Fri, 7 AM-5 PM

The permit includes requirements to demonstrate compliance with the PM10 NAAQS through submittal of a new refined air dispersion modeling analysis.

3.5 Short Term Throughput Limits and Permit Flexibility Short-term Throughput Limits The MPCA has developed a mechanism to allow for greater permitting flexibility that is based upon the existence of short-term throughput limits. Flexibility at the emission unit level allows the facility to add, replace, and modify equipment that is vented to a common control device and vented through a common stack. Since the short-term limits identify the maximum achievable, and in some cases the maximum allowable, process throughput rate, they can then be used as an enforceable bottleneck on each “group” of emission units that is required to vent to a specific stack, and controlled by a specific type of control equipment. The flexibility language provides a mechanism that makes the short-term limit(s) applicable to any new emission unit, or modification to an existing emission unit thereby allowing the Permittee to take “credit” for the limit (as well as other applicable limits) when calculating emissions to determining the type of permitting change. MPCA staff have determined that the use of a shortened averaging time (3-hour block average), which is representative of test conditions (1-hour test run), is more appropriate and provides confidence that the Permittee will remain in compliance with the permit when allowed flexibility to make a significant amount of pre-authorized changes without review. The Permittee must have an electronic method of data to gather hourly short-term throughput rates, that maintains the records for a minimum of 5 years (a historian). There is not a requirement to calculate and report the 3-hour block average, just a requirement to maintain the data to do so upon request. With the shortened averaging period, the MPCA does not consider it necessary to track periods of downtime. An exception to the 3-hour block average would be appropriate for short-term limits based on grain-receiving receipts and DDGS-loadout receipts. These activities are typically limited to ~10-12 hour day, and compliance is based upon daily receipts. The Permittee must ensure that they have the ability to identify and track periods of down-time if they choose an 8-hour block average in lieu of a 3-hour block average. Table 14. Short-term Throughput Limits

Stack

Short-term Throughput Limit

How the Limit is Tracked Comments

STRU 7 Grain

Grain received ≤ 512.0 ton/hr 3-

Grain receipts

The facility receives grain in one of two receiving pits in the grain receiving building. The facility produces a time-stamped


Stack



Receiving with Baghouse

hour block average

grain receipt for each truck that is unloaded. The grain receipts may be used to determine the 3-hour block average grain-receiving rate for any 3-hour period.


AOS 1: Flour rate ≤ 63.0 ton/hour 3-hour block average

Mash rate flow meter, slurry solids (measured using a density meter), calculations

Under Alternative Operating Scenario 1, the facility uses a flow meter to measure the mash flow rate between the liquefaction tank and the fermenters, and a density meter to measure the weight percent of slurry solids between the slurry tank and the liquefaction tank. Since the slurry solids content remains relatively consistent, the a density of 9.5 lb/gal is assumed in order to calculate the flour process rate. The mash flow rate and weight % slurry solids are recorded in the process historian. The recorded mash rate and weight % slurry solids may be used to determine the 3-hour block average flour rate for any 3-hour period.

AOS 2: Flour rate ≤ 63.0 ton/hour 3-hour block average

Mash rate flow meter, mash density meter, slurry solids (measured using a density meter), calculations

Under Alternative Operating Scenario 2, the facility uses a flow meter to measure the mash flow rate between the liquefaction tank and the fermenters, a density meter to measure the mash density between the liquefaction tank and the fermenters, and a density meter to measure the weight percent of slurry solids between the slurry tank and the liquefaction tank. The mash flow rate, mash density, and weight % slurry solids are recorded in the process historian. The recorded mash rate, mash density, and weight % slurry solids may be used to determine the 3-hour block average flour rate for any 3-hour period.

STRU 23 DDGS Loadout with Baghouse

DDGS processed ≤ 180.0 ton/hr 3-hour block average

Bulkweigher measurements and loadout receipts

The facility operates a bulkweigher for automated truck and rail DDGS loadout. The actual mass of DDGS loaded is confirmed using truck and rail scales, and a time-stamped DDGS truck or rail loadout receipt is generated for each truck or railcar filled with DDGS. Either the bulkweigher measurements or DDGS loadout receipts may be used to determine the 3-hour block average DDGS loadout rate for any 3-hour period.


Beer feed rate ≤ 742.0 gallon/min 3-hour block average

Beer feed rate flow meter

The facility uses a flow meter to measure the beer feed rate to the beer column. The beer feed rate is recorded in the process historian. The recorded beer feed rates may be used to determine the 3-hour block average beer feed rate for any 3-hour period.

STRU 25 Distillation (Vent Gas) Scrubber

Beer feed rate ≤ 742.0 gallon/min 3-hour block average


Centrifuge rate ≤ 493.0 gallon/min 3-hour block average

Centrifuge rate flow meter

The facility uses a flow meter to measure the liquid volumetric flow rate to the centrifuges. Although the liquid volumetric flow rate to the centrifuges does not provide direct measurement of the grain solids (wetcake) being fed to the dryer, the two process rates are related closely enough that the centrifuge rate may reasonably be used as an indicator of the dryer throughput rate. The centrifuge rate is recorded in the process historian. The recorded centrifuge rates may be used to determine the 3-hour block average centrifuge rate for any 3-hour period.

Syrup feed rate to DDGS Dryer ≤ 72.6 gallon/min

Syrup feed rate flow meter

The facility uses a flow meter to measure the corn syrup feed rate to the dryer. The syrup feed rate is recorded in the process historian. The recorded syrup feed rates may be used to


Stack



3-hour block average

determine the 3-hour block average syrup feed rate for any 3-hour period.

Permit Flexibility Three types of permit flexibility were added to the permit during this permit action; flexibility to replace control equipment, flexibility to replace scrubber stacks, and flexibility to add and replace emission units. Permit flexibility is optional and is not required. The Permittee has the ability to employ the flexibility provisions, or not. Appendix C of the permit contains a table to track all units that are afforded flexibility provisions. The Permittee will need to update Appendix C whenever any changes occur and submit changes to Appendix C in the Annual Report.

3.6 Direct Emissions and Indirect Emissions Emissions are characterized as direct (emitting from the piece of equipment directly to the atmosphere, such as breathing losses from a tank), or as indirect (emissions may be generated or flow through the unit, move directly to the next unit, and thence to controls and the atmosphere through an assigned stack, such as from a molecular sieve). Some emission units may have both direct and indirect emissions. The permit will specify permit venting requirements for direct emissions and indirect emissions associated with all emission units. Relationships from each piece of equipment, not emission points, are entered into the MPCA permit database (TEMPO). There needs to be an “end-point” for the VOC-containing material that flows through the process equipment (such as a molecular sieve). This “end-point”, where the emissions are vented, is typically the distillation scrubber or the thermal oxidizer.

3.7 Operating Scenarios The permit has been written to include various control equipment alternative operating scenarios. These alternative operating scenarios allow certain changes to the operation of the control equipment, while ensuring compliance with the applicable standards. Hammermill with Baghouse The hammermill with baghouse stack (STRU 22) was determined to have insufficient process instrumentation for affording equipment flexibility to this stack. Using the current instrumentation, the Permittee may comply with Alternative Operating Scenario 1 (AOS 1), which does not allow equipment flexibility. Once the Permittee installs a mash density meter, the Permittee will have sufficient instrumentation available to calculate a real-time flour mass throughput rate, thus enabling equipment flexibility for this stack (AOS 2). Grain Receiving Baghouse, Hammermill Baghouse, and DDGS Cooler Baghouse Under normal operation, the facility maintains the Grain Receiving Baghouse (TREA 7), Hammermill Baghouse (TREA 8), and DDGS Cooler Baghouse (TREA 39) within the permitted pressure drop range. “Operating Scenario 1” denotes the normal operating permit ranges in the TREA 7, TREA 8, and TREA 39 requirements. A second operating scenario, “Operating Scenario 2”, denotes the required pressure drop ranges during periods when no emissions are vented to the fabric filters. The Compliance Assurance Monitoring (CAM) rule requires these parameters to be measured once every 24 hours, thus the Operating Scenario 2 ranges have been added to the permit to avoid recorded non-compliant readings during these periods. CO2 (Fermentation) Scrubber and Vent Gas (Distillation) Scrubber Under normal operation, the facility maintains the CO2 Scrubber (TREA 22) and Vent Gas Scrubber (TREA 23) within all permitted ranges (pressure drop range, minimum water flow rate, and scrubber additive material


usage rate). “Operating Scenario 1” denotes the normal operating permit ranges in the TREA 22 and TREA 23 requirements. A second operating scenario, “Operating Scenario 2”, denotes the required scrubber permit ranges during periods when no emissions are vented to the scrubbers. The Compliance Assurance Monitoring (CAM) rule requires these parameters to be measured once every 24 hours, thus the Operating Scenario 2 ranges have been added to the permit to avoid recorded non-compliant readings during these periods. Regenerative Thermal Oxidizer Under normal operation, the facility maintains the Regenerative Thermal Oxidizer (TREA 25) combustion chamber temperature at or above the permitted minimum combustion chamber temperature limit. “Operating Scenario 1” denotes the normal minimum combustion chamber temperature limit in the TREA 25 requirements. A second operating scenario, “Operating Scenario 2”, denotes the required minimum temperature limit during periods when no emissions are vented to the RTO. The Compliance Assurance Monitoring (CAM) rule requires these parameters to be measured once every 24 hours, thus the Operating Scenario 2 limit has been added to the permit to avoid recorded non-compliant readings during these periods.

3.8 Preauthorized and Emergency Bypass of the RTO The permit has been revised to contain conditions related to preauthorized and emergency bypass of the RTO. The dryer is preauthorized by the permit to bypass the RTO for up to 50 hours per year (calculated on a 12-month rolling sum) when the dryer is not processing wetcake. When the dryer is not processing wetcake, the only emissions generated from the dryer are a result of natural gas combustion. Any other use of the RTO bypass stack (including bypass when the dryer is processing wetcake, and bypass in excess of 50 hours per year when the dryer is not processing wetcake) is considered emergency bypass and is required to be reported as a deviation. The DDGS cooler is preauthorized to bypass the dryer burners and the RTO for up to 50 hours per year (calculated on a 12-month rolling sum). This authorization applies to any DDGS cooler operation, including operation with DDGS. Bypass in excess of 50 hours per year is considered emergency bypass and is required to be reported as a deviation.

3.9 Bulk Agricultural Rule (BAR) The facility is subject to the Minnesota Standards for Bulk Agricultural Commodity Facilities (Minn. R. 7011.1000-7011.1015). Since the facility has an annual commodity throughput of more than 180,000 tons per year, the facility is required to meet the control requirements of Minn. R. 7011.1005, subp. 3. These requirements contain opacity limits for various activity types, including an opacity limit for any bulk agricultural commodity “handling operation” (defined in the rule as including “the use of bucket elevators, scale hoppers, conveyors, trippers, and spouts for the distribution and weighing of commodities within a commodity facility.”) While the BAR creates some uncertainty as to whether units subject to the control requirements must be vented to add-on particulate pollution control equipment (e.g. fabric filter or cyclone), an examination of the Statement of Need and Reasonableness (SONAR) for the BAR has led to the conclusion that the intent of “control” in this context means compliance with the applicable opacity standards under Minn. R. 7011.1505, subp. 3. Additionally, the term “fugitive emissions” is not explicitly defined in the BAR. Since this rule was written to compliment 40 CFR pt. 60, subp. DD (New Source Performance Standards for Grain Elevators), MPCA has contended that the definition of “fugitive emission” from 40 CFR pt. 60, subp. DD is appropriate for use in this context. 40 CFR § 60.301(h) defines “fugitive emission” to mean “the particulate matter which is not collected by a capture system and is released directly into the atmosphere from an affected facility at


a grain elevator”. Based on this definition, opacity limits as defined in Minn. R. 7011.1005, subp. 3(A)-(C) apply to uncaptured emissions. Uncaptured emissions originate from areas with emissions units that do not have add-on control equipment or have emissions capture systems with efficiencies of less than 100%. At the facility, this includes the uncaptured emissions from grain receiving (EQUI 117 and EQUI 118), numerous DDGS handling and storage operations (EQUIs 129 - 135), and DDGS loadout (EQUI 138). STRU 7 (Grain Receiving with Baghouse), STRU 22 (Hammermill with Baghouse) and STRU 23 (DDGS Loadout with Baghouse) each receive emissions from units that are subject to the BAR. The applicable 10% opacity limit from the control equipment discharge (Minn. R. 7011.1505, subp. 3(D)) applies individually to each unit subject to the BAR that is vented to the stack and associated fabric filter.

3.10 Performance Testing The Permittee must conduct each performance test at worst-case conditions, or at operating conditions allowed by Minn. R. 7017.2025, subp. 2, items A-C. This permit uses short-term limits to define worst-case conditions as the maximum achievable process or operating rate, for a group of emission units that vent emissions to a common stack and common control equipment during the performance test. Most processes at an ethanol plant are highly variable and/or lack good emission factors, therefore a performance test is used to verify permitting assumptions. Performance tests consist of a minimum of three separate one-hour runs, the arithmetic mean of the test runs is the result of the performance test. The MPCA will issue a Notice of Compliance letter upon verification that the test results are less than the permitted limits. The NOC will identify the process throughput rates achieved at the time of testing. The permit identifies how the process throughput rates may be reset after testing. The permit identifies how the process throughput rates may be reset after testing. If the test results are less than or equal to 80% of the lb/hr emission limit set at the stack, the short-term process throughput limit may be reset to 110% of the measured average throughput rate measured during the test runs. For stacks that have associated uncaptured emissions of particulate matter, a maximum allowable short-term throughput limit is set to ensure that assumptions relied upon in the Air Dispersion Modeling Analysis are not exceeded. If the test results are greater than 80% of any emission limit, the short-term process throughput limit will be reset to the average throughput rate measured during testing. The Permittee must maintain adequate records to demonstrate continuous compliance with these operating condition limitations. The facility has multiple units with performance test conditions. Performance testing is required to verify emission rates and emission factors. Appendix D of the permit lists the performance test recordkeeping items and test methods that must be completed during performance testing. The Table 15 contains a summary of the history of performance testing at Green Plains Otter Tail LLC. Table 15. Performance Test Results

Subject Item Limit (basis) Dates Tested Results % of Limit

Required Test Frequency

STRU 7 (Grain Receiving Baghouse Stack)

PM ≤ 3.170 lb/hr 3-hour average (Title I Condition: Avoid major source under 40 CFR §52.21(b)(1)(i))

11/26/2017 10/02/2012 06/24/2008

0.102 lb/hr1 0.107 lb/hr1 0.448 lb/hr

3.22% 3.39% 14.1%

Every 60 months

PM10 ≤ 3.170 lb/hr 3-hour average (Title I Condition: Avoid major source under 40 CFR §52.21(b)(1)(i))

11/26/2017 10/02/2012 60/24/2008

0.102 lb/hr1 0.107 lb/hr1 0.503 lb/hr

3.22% 3.39% 15.9%

Every 60 months


Subject Item Limit (basis) Dates Tested Results % of Limit

Required Test Frequency

STRU 22 (Hammermill Baghouse Stack)


10/31/2017 10/04/2012 06/25/2008

0.086 lb/hr1 0.019 lb/hr1 0.045 lb/hr

4.23% 0.95% 2.21%

Every 60 months


10/31/2017 10/04/2012 06/25/2008

0.086 lb/hr1 0.019 lb/hr1 0.024 lb/hr

4.23% 0.95% 5.85%

Every 60 months

STRU 23 (DDGS Loadout Baghouse Stack)


11/27/2017 10/05/2012 06/26/2008

0.019 lb/hr1 0.012 lb/hr1 0.024 lb/hr1

4.72% 3.01% 5.85%

Every 60 months


11/27/2017 10/05/2012 6/26/2008

0.019 lb/hr1 0.012 lb/hr1 0.039 lb/hr

4.72% 3.01% 9.43%

Every 60 months

STRU 24 (CO2/ Fermentation Scrubber Stack)

VOC (as total mass) ≤ 11.280 lb/hr 3-hour average (Title I Condition: Avoid major source under 40 CFR §52.21(b)(1)(i))

03/02/2017 08/24/2016 12/09/2011 10/30/2008

6.04 lb/hr 6.88 lb/hr 5.72 lb/hr 6.76 lb/hr

53.5% 61.0% 50.7% 59.9%

Every 60 months4

TREA 22 VOC percent overall control efficiency ≥ 95% (Title I Condition: Avoid major source under 40 CFR §52.21(b)(1)(i))

No previous control efficiency testing conducted

Every 60 months5

STRU 25 (Vent Gas/ Distillation Scrubber Stack)


03/01/2017 08/25/2016 12/09/2011 12/03/2009 07/08/2008

1.59 lb/hr 4.10 lb/hr 1.23 lb/hr 0.77 lb/hr 1.55 lb/hr

33.5% 86.4% 25.8% 16.2% 32.6%

Every 60 months5


No previous control efficiency testing conducted

Every 60 months5

STRU 26 (RTO Stack)


12/10/2014 11/14/2012 10/28/2008

0.782 lb/hr 1.09 lb/hr 1.13 lb/hr

15.2% 21.2% 22.0%

Every 60 months


12/10/2014 11/14/2012 10/28/2008

3.78 lb/hr 3.77 lb/hr 1.73 lb/hr

73.5% 73.3% 33.6%

Every 60 months6

CO ≤ 12.910 lb/hr 3-hour average (Title I Condition: Avoid major source under 40 CFR §52.21(b)(1)(i))

12/10/2014 11/13/2012 10/28/2008

8.49 lb/hr 2.47 lb/hr 9.79 lb/hr

65.7% 19.1% 75.8%

Every 60 months8


12/10/2014 11/13/2012 10/28/2008 06/26/2008

1.11 lb/hr 0.803 lb/hr 1.85 lb/hr 0.61 lb/hr

22.2% 16.1% 37.1% 12.2%

Every 60 months7


11/14/2012 97.2% C.E. 93.3% Every 60 months7

1Test result is for filterable PM (EPA method 17) only; no condensable (Method 202) test was performed. Future required performance tests will follow the test methods specified in Minn. R. 7017.2060, unless an alternative test method is approved by the commissioner. 2Particulate matter is reported as the sum of filterable and organic condensable particulate matter (Minn. R. 7017.2060, subp. 3(B)(2)). 3PM10 is reported as the sum of filterable, organic condensable, and inorganic condensable PM10 (Minn. R. 7017.2060, subp. 4(B)(2)).


4STRU 24 VOC as mass performance tests have averaged out to approximately 6.35 lb/hr, which is about 56% of the limit. There is no change to the test frequency at this time. TREA 22 VOC control efficiency performance tests have been set to the same test schedule as the STRU 24 mass emission rate testing. 5Although the August 25, 2016 test result was within 86% of the emission limit, the STRU 25 VOC as mass performance test results average to approximately 1.85 lb/hr, which is about 39% of the limit. There is no change to the test frequency at this time. TREA 23 VOC control efficiency performance tests have been set to the same test schedule as the STRU 25 mass emission rate testing. 6STRU 26 PM10 performance test results average to approximately 3.09 lb/hr, which is about 60% of the limit. There is no change to the test frequency at this time. 7STRU 26 VOC as mass performance test results average to approximately 0.87 lb/hr, which is about 18% of the limit. There is no change to the test frequency at this time. TREA 25 VOC control efficiency performance tests have been set to the same test schedule as the STRU 26 mass emission rate testing. 8STRU 26 CO performance test results average to approximately 6.92 lb/hr, which is about 54% of the limit. There is no change to the test frequency at this time.

3.11 Permit Reopenings Table 16 below provides a summary of the control equipment operating parameter changes that were made through compliant performance tests, as noted in the applicable Notices of Compliance (NOCs). Table 16. Summary of Control Equipment Operating Parameter Permit Reopenings

Control Equipment Subject Item

Test Date

NOC Date Operating Limit Averaging Method


03/02/17 06/12/17 Scrubber Water Flow Rate ≥ 44.0 gpm1 Record once each day Pressure Drop ≥ 0.5 and ≤ 6.0 in. WC2 Record once each day ABS Injection Rate ≥ 1.1 gph3 Record once each day


03/01/17 06/12/17 Scrubber Water Flow Rate ≥ 32.0 gpm4 Record once each day 08/25/16 01/24/17 Pressure Drop ≥ 0.1 and ≤ 6.0 in. WC5 Record once each day


12/10/14

05/12/15 Combustion Chamber Outlet Temp. ≥ 1,615 °F6

3-hour average

1Minimum TREA 22 scrubber water flow rate decreased from 60.0 gpm (1/24/2017 NOC) to 44.0 gpm (6/12/2017 NOC). 2Minimum TREA 22 pressure drop decreased from 1.0 in. WC (1/24/2017 NOC) to 0.5 in. WC (6/12/2017 NOC). 3Minimum TREA 22 ABS injection rate increased from 0.70 gph (12/18/2012 NOC) to 1.1 gph (6/12/2017 NOC). 4Minimum TREA 23 scrubber water flow rate decreased from 35.0 gpm (1/24/2017 NOC) to 32.0 gpm (6/12/2017 NOC). 5Minimum TREA 23 pressure drop decreased from 1.0 in. WC (12/18/2012 NOC) to 0.1 in. WC (1/24/2017 NOC). 6Minimum TREA 25 combustion chamber outlet temperature decreased from 1,625 °F (3/4/2013 NOC) to 1,615 °F (5/12/2015 NOC).

3.12 Scrubber Additive (Ammonium Bisulfite or Sodium Bisulfite) Since acetaldehyde is not very soluble in water, Green Plains Otter Tail LLC uses a bisulfite salt (either ammonium bisulfite or sodium bisulfite) to improve scrubber control efficiency for this compound, as well as other aldehyde compounds. After dissociation of the bisulfite salt in the scrubber water, the bisulfite anion reacts with the aldehyde compound to produce a sulfonic acid, which is very soluble in water. Below is the balanced chemical reaction of aqueous ammonium bisulfite and acetaldehyde.

Although the bisulfite mass addition rate (lb/hr) is the primary driver behind this chemical reaction, the scrubber additive flow rate is measured on a volumetric basis (gal/hr). As long as the mass fraction of bisulfite salt is not altered (i.e. if the solution concentration is not changed), the approximation can be made that the scrubber additive volumetric flow rate is directly proportional to the bisulfite mass addition rate.


Green Plains Otter Tail is required to maintain an additive flow rate greater than or equal to the Scrubber Additive Material Usage Limit in the permit, unless a new limit is set using the Approved Replicable Methodology (ARM) as described in the permit. Additionally, the permit requires Green Plains Otter Tail to maintain ongoing records of the active chemical content of the scrubber additive used. If the facility makes any change to the active chemical content (either by changing the solution concentration onsite or by purchasing a premixed solution of a different concentration), the facility is required to maintain a calculation of the new required volumetric flow rate necessary to meet the required Scrubber Additive Material Usage Rate Limit on a bisulfite mass addition rate-basis.

3.13 HAP Control Efficiencies CO2 (Fermentation) Scrubber (TREA 22) and Vent Gas (Distillation) Scrubber (TREA 23) For the scrubbers, solubility in water is the primary parameter that has been used to estimate HAP control efficiency. The Nebraska Department of Environmental Quality has collected stack test information indicating that acetaldehyde reduction by scrubbers with chemical additive is 80 to 90 percent (85 percent has been assumed, based on the average of these two values) and 30 to 35 percent for scrubbers with no chemical additive (32.5 percent has been assumed, based on the average of these two values). For acrolein, which has limited solubility in water, the conservative estimate is made that the control efficiency is approximately 32.5 percent. The formaldehyde control efficiency is estimated to be the same as the acetaldehyde control efficiency. The methanol control efficiency is estimated to be 95 percent control efficiency based on good solubility in water. These values have been incorporated into this permit. Flare (TREA 21) The control efficiency of the flare is based on the listed VOC control efficiency in the control equipment rule (Minn. R. 7011.0070). As long as a flame is present, it is anticipated that a destruction efficiency of at least 98% will be achieved. An assumed capture efficiency of 98.7% for NSPS-compliant tanker trucks (AP-42 Section 5.2) was used to arrive at an overall VOC/HAP control efficiency of 96.7% for the flare. Regenerative Thermal Oxidizer (TREA 25) For the regenerative thermal oxidizer (RTO), autoignition temperature is the primary parameter that has been used to estimate HAP control efficiency. Auto-ignition temperature is defined as the minimum temperature required to ignite a gas or vapor in air without a spark or flame being present. Table 17 lists the auto-ignition temperatures for several of the VOC and HAP compounds present in the DDGS dryer exhaust. Table 17. Auto-Ignition Temperatures for Several DDGS Dryer Pollutants Compound Pollutant Classification Autoignition Temperature (°F)1 Acetaldehyde VOC, HAP 347 Acetic acid VOC 961 Acrolein VOC, HAP 453 Ethanol VOC 689 Ethyl acetate VOC 800 Formaldehyde VOC, HAP 806 Isoamyl alcohol VOC 662 Methanol VOC, HAP 867 1 Source: PubChem (U.S. National Library of Medicine)


Design of Thermal Oxidation Systems for Volatile Organic Compounds by David Lewandowski (2000) presents a table describing the minimum temperature and residence time necessary to achieve certain desired volatile organic compound destruction efficiencies. This table indicates that a 0.5 second residence time at 300 °F above autoignition temperature is sufficient to achieve a VOC destruction efficiency of 95%, and that a 0.5 second residence time at 400 °F above autoignition temperature is sufficient to achieve a VOC destruction efficiency of 98% (Lewandowski, pp. 27). The RTO has a residence time of approximately 1.0 seconds, and the current minimum RTO combustion chamber outlet temperature limit is 1,615 °F (> 400 °F above the autoignition temperatures of the compounds listed above); therefore, a VOC destruction efficiency of 97% is reasonable for the RTO. Additionally, a VOC destruction efficiency performance test for the RTO was conducted on 11/14/2012, which demonstrated an average VOC destruction efficiency of 97.2% during the test.

3.14 Monitoring

In accordance with the Clean Air Act, it is the responsibility of the owner or operator of a facility to have sufficient knowledge of the facility to certify that the facility is in compliance with all applicable requirements. For CAM, the Permittee submitted a CAM proposal as required by 40 CFR § 64.3. It can be found in Attachment 5 to this TSD. Further discussion of decisions about CAM can be found in Table 5. In evaluating the monitoring included in the permit, the MPCA considered the following:

• the likelihood of the facility violating the applicable requirements; • whether add-on controls are necessary to meet the emission limits; • the variability of emissions over time; • the type of monitoring, process, maintenance, or control equipment data already available for the

emission unit; • the technical and economic feasibility of possible periodic monitoring methods; and • the kind of monitoring found on similar units elsewhere.

Table 18 summarizes the monitoring requirements. Table 18. Monitoring

Subject Item* Requirement (basis)

What is the monitoring? Why is this monitoring adequate?

TFAC 2 Total Facility

Production ≤ 65.0 million gallons of undenatured ethanol per year 12-month rolling sum. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title I Condition: Avoid major source under 40 CFR § 63.2)

Daily records of 200 proof ethanol production, monthly calculations

The Permittee is able to use daily records of 200 proof ethanol production to calculate monthly and 12-month rolling sum production. Because the facility is not likely to operate uniformly throughout the year, a 12-month rolling sum is adequate to ensure the facility remains below PSD and NESHAPs major source thresholds.




Process Throughput ≤ 679,100 tons of grain per year 12-month rolling sum. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))

Daily grain receiving records, monthly calculations

The Permittee is able to use daily grain receiving records to calculate monthly and 12-month rolling sum grain throughput. Because the facility is not likely to operate uniformly throughout the year, a 12-month rolling sum is adequate to ensure the facility remains below PSD major source thresholds.

Process Throughput ≤ 212,200 tons of DDGS per year 12-month rolling sum. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))

Daily DDGS loadout records, monthly calculations

The Permittee is able to use daily DDGS loadout records to calculate monthly and 12-month rolling sum DDGS throughput. Because the facility is not likely to operate uniformly throughout the year, a 12-month rolling sum is adequate to ensure the facility remains below PSD major source thresholds.

Process Throughput ≤ 1.660 million gallons of denaturant usage per year 12-month rolling sum. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title I Condition: Avoid major source under 40 CFR § 63.2)

Daily denaturant usage records, monthly calculations

The Permittee is able to use daily denaturant usage records to calculate monthly and 12-month rolling sum denaturant throughput. Because the facility is not likely to operate uniformly throughout the year, a 12-month rolling sum is adequate to ensure the facility remains below PSD and NESHAPs major source thresholds.

COMG 6 Indoor Grain Receiving Limits

Process Throughput ≤ 7,250 tons of grain received indoors per day. (Title V modeling)

Daily grain receiving records

The Permittee is able to use daily grain receiving records to ensure compliance with the limits.




Grain receiving operations limited to: 7 AM-7 PM, M-F, Dec-Aug.; and 7 AM-7 PM, M-Sat., Sept.-Nov. (Title V modeling)

Daily records of operating hours

Daily written logs of the commencement and conclusion of grain receiving operations are adequate to show compliance with the limit.

Straight truck grain unloading operations ≤ 14 per day. (Title V modeling)

Daily recordkeeping of straight truck grain unloading operations

Daily written logs of the number of straight trucks unloading grain at the grain receiving building is adequate to show compliance with the limit.

EQUI 4 Truck Ethanol Loadout

Opacity ≤ 20% PM, variable with airflow (Minn. R. 7011.0715, subp. 1)

None EQUI 4 is not anticipated to emit particulate emissions, and the flare (TREA 21) is a smokeless design; therefore, the likelihood of violating either of the emission limits is very small.

EQUIs 8 - 10, 13, and 16 Corn Storage Silos #1 - #5

Opacity ≤ 5% (Minn. R. 7011.1005, subp. 3(A))

Visible emissions, corrective actions, recordkeeping

A visible emission check will be completed at the grain silo vents (STRUs 27 - 31) once each day of operation while the bins are being filled with grain. Corrective actions are required to be taken if any visible emissions are observed. Since 5% opacity is a very low opacity reading, any visible emissions may indicate that the limit is being exceeded; therefore, the visible emissions checks will ensure continuous compliance.




EQUI 18 Emergency Generator

PM ≤ 0.40 g/HP-hr (0.54 g/kW-hr). TOC ≤ 1.0 g/HP-hr (1.30 g/kW-hr). NOX ≤ 6.90 g/HP-hr (9.20 g/kW-hr). CO ≤ 8.50 g/HP-hr (0.540 g/kW-hr). (40 CFR pt. 60, subp. IIII (Table 1))

Fuel Supplier Certification for each shipment of diesel fuel. Non-resettable hour meter, and recordkeeping. Purchase certified engine and: 1) Operate and maintain the stationary CI internal combustion engine according to the manufacturer's emission-related written instructions; 2) Change only those emission-related settings that are permitted by the manufacturer; and 3) Meet the requirements of 40 CFR pts. 89, 94, and/or 1068 as they apply.

Monitoring required by the NSPS is adequate to demonstrate compliance with the requirements.

Opacity ≤ 20% once operating temperatures have been attained. (Minn. R. 7011.2300, subp. 1)

None Based on allowed fuel types and published EPA emission factors from AP-42 Section 3.3, it is unlikely that this emission limit would be exceeded.

SO2 ≤ 0.0015 lb/MMBtu (Minn. R. 7011.2300, subp. 2(B))

Fuel supplier certification

Based on allowed fuel types and published EPA emission factors from AP-42 Section 3.3, the potential to emit SO2 from EQUI 18 is 0.0015 lb/MMBtu; therefore, it is unlikely that this emission limit would be exceeded.




EQUI 55 DDGS Dryer

Opacity ≤ 20%, with exceptions PM, variable with airflow (Minn. R. 7011.0610, subp. 1(A))

Opacity: None PM: Recurring performance testing at STRU 26 (EPA Methods 5 and 202, or other MPCA-approved method)

Opacity: Other limits at STRU 26 and TREA 25 (and associated monitoring) ensure that this applicable requirement is being met. Performance testing at worst-case conditions is the most direct method for determining compliance with an emission standard when a CEMS is not available. Other limits at STRU 26 and TREA 25 (and associated monitoring) ensure that operation of the facility (production rates and control equipment operating parameters) remains within the bounds tested during the most recent performance test demonstrating compliance.

EQUI 56 DDGS Cooler


Opacity: None PM: Recurring performance testing at STRU 26 (EPA Methods 5 and 202, or other MPCA-approved method)

Opacity: Other limits at STRU 26, TREA 25, and TREA 39 (and associated monitoring) ensure that this applicable requirement is being met. Performance testing at worst-case conditions is the most direct method for determining compliance with an emission standard when a CEMS is not available. Other limits at STRU 26 and TREA 25 (and associated monitoring) ensure that operation of the facility (production rates and control equipment operating parameters) remains within the bounds tested during the most recent performance test demonstrating compliance.

EQUIs 58 and 59 200 Proof Tanks


None EQUIs 58 and 59 are not anticipated to emit particulate emissions; therefore, the likelihood of violating either of the emission limits is very small.




EQUI 108 Fire Pump

PM ≤ 0.40 g/HP-hr (0.540 g/kW-hr). NMHC+NOx ≤ 7.80 g/HP-hr (10.50 g/kW-hr). CO ≤ 2.60 g/HP-hr (3.50 g/kW-hr). (40 CFR pt. 60, subp. IIII (Table 4))

Fuel Supplier Certification for each shipment of diesel fuel. Non-resettable hour meter, and recordkeeping. Purchase certified engine and: 1) Operate and maintain the stationary CI internal combustion engine according to the manufacturer's emission-related written instructions; 2) Change only those emission-related settings that are permitted by the manufacturer; and 3) Meet the requirements of 40 CFR pts. 89, 94, and/or 1068 as they apply.

Monitoring required by the NSPS is adequate to demonstrate compliance with the requirements

Opacity ≤ 20% once operating temperatures have been attained. (Minn. R. 7011.2300, subp. 1)

None Based on allowed fuel types and published EPA emission factors from AP-42 Section 3.3, it is unlikely that this emission limit would be exceeded.

SO2 ≤ 0.0015 lb/MMBtu (Minn. R. 7011.2300, subp. 2(B))

Fuel supplier certification

Based on allowed fuel types and published EPA emission factors from AP-42 Section 3.3, the potential to emit SO2 from EQUI 108 is 0.0015 lb/MMBtu; therefore, it is unlikely that this emission limit would be exceeded.




EQUI 116 Rail Ethanol Loadout


None EQUI 116 is not anticipated to emit particulate emissions, and the flare (TREA 21) is a smokeless design; therefore, the likelihood of violating either of the emission limits is very small.

EQUIs 117 and 118 Corn Dump Pit/Auger 1 (Uncaptured) and Corn Dump Pit/Auger 2 (Uncaptured)


Daily visible emissions check, recordkeeping

A visible emission check will be completed at the grain receiving/DDGS loadout building door once each day while grain is being received. Corrective actions (closing doors, sweeping roadway area, etc.) are required to be taken if any visible emissions are observed. Since 5% opacity is a very low opacity reading, any visible emissions may indicate that the limit is being exceeded, therefore the visible emissions checks will ensure that the building is in continuous compliance.

EQUIs 129 - 133 DDGS Storage Conveyors 1 - 4 and DDGS Storage Elevator



A visible emission check will be completed at the DDGS storage building door once each day while DDGS is being conveyed into the storage building. Corrective actions (closing doors, sweeping roadway area, etc.) are required to be taken if any visible emissions are observed. Since 5% opacity is a very low opacity reading, any visible emissions may indicate that the limit is being exceeded, therefore the visible emissions checks will ensure that the building is in continuous compliance.

EQUIs 134 and 135 DDGS Reclaim via Front End Loader and DDGS Reclaim Dump Pit



A visible emission check will be completed at the DDGS storage building door once each day while DDGS is being removed from the storage pile and delivered to the receiving pit. Corrective actions (closing doors, sweeping roadway area, etc.) are required to be taken if any visible emissions are observed. Since 5% opacity is a very low opacity reading, any visible emissions may indicate that the limit is being exceeded, therefore the visible emissions checks will ensure that the building is in continuous compliance.

EQUI 138 DDGS Load Spout (Truck/Rail, Uncaptured)

Opacity ≤ 5% from railcar loading stations (Minn. R. 7011.1005, subp. 3(A))


A visible emission check will be completed at the grain receiving/DDGS loadout building door once each day while DDGS is being loaded into a truck. Corrective actions (closing doors, sweeping roadway area, etc.) are required to be taken if any visible emissions are observed. Since 10% opacity (or 5% opacity, as applicable) is a very low opacity reading, any visible emissions may indicate that the limit is being exceeded, therefore the visible emissions checks will ensure that the building is in continuous compliance.

Opacity ≤ 10% from truck loading stations (Minn. R. 7011.1005, subp. 3(B))




EQUI 151 Gasoline Tank (1,000 gal)


None EQUI 151 is not anticipated to emit particulate emissions; therefore, the likelihood of violating either of the emission limits is very small.

EQUI 152 Gasoline Dispensing


None EQUI 152 is not anticipated to emit particulate emissions; therefore, the likelihood of violating either of the emission limits is very small.

Process Throughput ≤ 120,000 gallons of gasoline per year 12-month rolling sum. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title I Condition: Avoid major source under 40 CFR § 63.2)

Daily gasoline receiving records, monthly calculations

The Permittee is able to use daily gasoline receiving records to calculate the monthly and 12-month rolling sum gasoline throughput. Because gasoline usage for facility vehicles is not likely to be uniform throughout the year, a 12-month rolling sum is adequate to ensure the facility remains below PSD and NESHAPs major source thresholds.

EQUI 169 Boiler Make-Up Air Heater

Opacity ≤ 20% PM, variable with airflow (Minn. R. 7011.0610, subp. 1(A))

None This unit uses natural gas only; therefore, the likelihood of violating either of the emission limits is very small. The Permittee can demonstrate that this unit will continue to operate such that emissions are well below the emission limits by only burning natural gas. Design based PTE, using AP-42, is 0.038 lb/hr of PM. Applicable rule limit at maximum airflow (total stack gas flow of 35,000 cfm from one of the boilers) is 14.4 lb/hr.

FUGIs 7 - 9 Cooling Tower Cells 1 - 3


None Based on published emission factors from the New Mexico Environment Department Air Quality Bureau, the potential to emit PM from FUGIs 7, 8, and 9 is 0.834 lb/hr each (emission rate for each cooling tower cell). Applicable rule limit at maximum airflow for each cell (75,000 cfm) is 29.8 lb/hr; therefore, the likelihood of violating either of the emission limits is very small.

FUGI 11 Grain Receiving and Conveying at Temporary

Opacity ≤ 20% (Minn. R. 7011.0110)

Daily opacity determinations and visible emissions checks

The permit requires opacity determinations for certain grain handling operations that are anticipated to generate large dust plumes. Additionally, visible emissions checks are required to be performed at the property boundary to ensure compliance.




Storage Facility Process Throughput ≤ 7,280 tons of grain received at the TSF per day. (Title V modeling)

Daily grain receiving records

The Permittee is able to use daily grain receiving records to ensure compliance with the limits.

Grain receiving and pile filling operations limited to: 7 AM-7 PM, M-F, July-Aug.; and 7 AM-7 PM, M-Sat., Sept.-Nov. (Title V modeling) Truck type: Hopper-type trucks only

FUGI 16 Wetcake -AOS

Opacity ≤ 5% from handling operations (Minn. R. 7011.1005, subp. 3(A))

None High moisture content and quick removal of product is adequate to show compliance with the limits.

Opacity ≤ 10% from truck loading stations (Minn. R. 7011.1005, subp. 3(B))

FUGI 19 Grain Reclaim Operations at Temporary Storage Facility

Opacity ≤ 20% (Minn. R. 7011.0110)

Daily opacity determinations and visible emissions checks

The permit requires opacity determinations for certain grain handling operations that are anticipated to generate large dust plumes. Additionally, visible emissions checks are required to be performed at the property boundary to ensure compliance.

Process Throughput ≤ 3,080 tons of grain reclaimed from the TSF per day. (Title V modeling)

Daily grain reclaim records

The Permittee is able to use daily grain reclaim records to ensure compliance with the limits.




Grain reclaim operations limited to: 7 AM-7 PM, M-F, Mar.-Jun. (Title V modeling)

STRU 7 Grain Receiving with Baghouse

PM ≤ 3.170 lb/hr 3-hour average. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))

Recurring performance testing (EPA Methods 5 and 202, or other MPCA-approved method)

Performance testing at worst-case conditions is the most direct method for determining compliance with an emission standard when a CEMS is not available. Other limits at STRU 7 and TREA 7 (and associated monitoring) ensure that operation of the facility (production rates and control equipment operating parameters) remains within the bounds tested during the most recent performance test demonstrating compliance. PM10 ≤ 3.170

lb/hr 3-hour average. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title V modeling)

Recurring performance testing (EPA Methods 201A and 202, or other MPCA-approved method)

PM2.5 ≤ 3.170 lb/hr 3-hour average. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i)) Opacity ≤ 10% (Minn. R. 7011.1005, subp. 3(D))

None Other limits at TREA 7 (and associated monitoring) ensure that this applicable requirement is being met.

Equipment operations limited to: 7 AM-7 PM, M-F, Dec-Aug.; and 7 AM-7 PM, M-Sat., Sept.-Nov. (Title V modeling)

None Daily records of grain receiving operating hours at COMG 6 are sufficient to ensure compliance with the limit.




Short-term Process Throughput ≤ 512.0 tons of grain per hour 3-hour block average. (Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title V modeling)

Grain receipts On each grain delivery receipt, the facility records the time, date, and weight of grain received. The facility is able to use the time-stamped grain receipts to calculate 3-hour block averages of grain received to demonstrate ongoing compliance with the limits.




Performance testing at worst-case conditions is the most direct method for determining compliance with an emission standard when a CEMS is not available. Other limits at STRU 22 and TREA 8 (and associated monitoring) ensure that operation of the facility (production rates and control equipment operating parameters) remains within the bounds tested during the most recent performance test demonstrating compliance. PM10 ≤ 2.040



PM2.5 ≤ 2.040 lb/hr 3-hour average. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i)) Opacity ≤ 10% (Minn. R. 7011.1005, subp. 3(D)) *Applies to EQUIs 1, 27, 114-115, 166-168, and new dry bulk ag. commodity handling equipment





Opacity ≤ 20% PM, variable with airflow (Minn. R. 7011.0715, subp. 1) *Applies to EQUIs 29-30, 57, 119-126, and new industrial process (non-bulk ag.) equipment

None Other limits at STRU 22 and TREA 8 (and associated monitoring) ensure that this applicable requirement is being met. These other operational limits give this unit a PTE of 2.04 lb/hr. Applicable rule limit at maximum airflow is 13.7 lb/hr.

AOS 1: Short-term Process Throughput ≤ 63.0 ton/hr flour rate 3-hour block average. (Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title V modeling)

Mash rate flow meter, slurry percent solids meter, calculations, recordkeeping

The facility is able to calculate the flour rate using the mash rate flow meter to measure the mash rate between the liquefaction tank and the fermenters and the slurry density meter to measure the weight % solids of the slurry between the slurry tank and the liquefaction tank. These parameters are continuously monitored and recorded in the facility’s process historian.

AOS 2: Short-term Process Throughput ≤ 63.0 ton/hr flour rate 3-hour block average. (Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title V modeling)

Mash rate flow meter, mash density meter, slurry percent solids meter, calculations, recordkeeping

The facility is able to calculate the flour rate using the mash rate flow meter to measure the mash rate between the liquefaction tank and the fermenters, a mash density meter to measure the mash density between the liquefaction tank and the fermenters, and the slurry density meter to measure the weight % solids of the slurry between the slurry tank and the liquefaction tank. These parameters are continuously monitored and recorded in the facility’s process historian.

STRU 23 DDGS Loadout with Fabric Filter



Performance testing at worst-case conditions is the most direct method for determining compliance with an emission standard when a CEMS is not available. Other limits at STRU 23 and TREA 11 (and associated monitoring) ensure that operation of the facility (production rates and control equipment operating parameters) remains within the bounds tested during




PM10 ≤ 410 lb/hr 3-hour average. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title V modeling)


the most recent performance test demonstrating compliance.

PM2.5 ≤ 410 lb/hr 3-hour average. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i)) Opacity ≤ 10% (Minn. R. 7011.1005, subp. 3(D))


Equipment operations limited to: 7 AM-5 PM, M-F. (Title V modeling)

Daily DDGS loadout records

The Permittee is able to use daily DDGS loadout records to ensure compliance with the limits.

Short-term Process Throughput ≤ 180.0 ton DDGS/hr 3-hour block average. (Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title V modeling)

DDGS loadout receipts and bulkweigher measurements

On each DDGS loadout receipt, the facility records the time, date, and weight of DDGS loaded out. The facility is able to use the time-stamped DDGS loadout receipts or bulkweigher measurements to calculate 3-hour block averages of DDGS loaded out to demonstrate ongoing compliance with the limits.


VOC (as total mass) ≤ 11.280 lb/hr 3-hour average. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))

Recurring performance testing (EPA Methods 25A and 18 or 320, or other MPCA-approved method)

Performance testing at worst-case conditions is the most direct method for determining compliance with an emission standard when a CEMS is not available. Other limits at STRU 24 and TREA 22 (and associated monitoring) ensure that operation of the facility (production rates and control equipment operating parameters) remains within the bounds tested during the most recent performance test demonstrating compliance.





None None of the emission units venting to STRU 24 are anticipated to emit particulate emissions; therefore, the likelihood of violating either of the emission limits is very small.

Short-term Process Throughput ≤ 742.0 gpm beer feed rate 3-hour block average. (Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title I Condition: Avoid major source under 40 CFR § 63.2)

Beer feed rate flow meter, recordkeeping

The facility is able to use the beer feed rate flow meter to measure the beer feed rate to the beer column. This parameter is continuously monitored and recorded in the facility’s process historian.

STRU 25 Distillation (Vent Gas) Scrubber

VOC (as total mass) ≤ 4.750 lb/hr 3-hour average. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))




None None of the emission units venting to STRU 25 are anticipated to emit particulate emissions; therefore, the likelihood of violating either of the emission limits is very small.




Short-term Process Throughput ≤ 742.0 gpm beer feed rate 3-hour block average. (Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title I Condition: Avoid major source under 40 CFR § 63.2)

Beer feed rate flow meter, recordkeeping

The facility is able to use the beer feed rate flow meter to measure the beer feed rate to the beer column. This parameter is continuously monitored and recorded in the facility’s process historian.




Performance testing at worst-case conditions is the most direct method for determining compliance with an emission standard when a CEMS is not available. Other limits at STRU 26, TREA 25, and TREA 39 (and associated monitoring) ensure that operation of the facility (production rates and control equipment operating parameters) remains within the bounds tested during the most recent performance test demonstrating compliance. PM10 ≤ 5.150



PM2.5 ≤ 5.150 lb/hr 3-hour average. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i)) VOC (as total mass) ≤ 5.0 lb/hr 3-hour average. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))






CO ≤ 12.910 lb/hr 3-hour average. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))

Recurring performance testing (EPA Method 10, or other MPCA-approved method)


Short-term Process Throughput ≤ 493.0 gpm centrifuge rate 3-hour block average. (Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title I Condition: Avoid major source under 40 CFR § 63.2)

Centrifuge feed rate flow meter, recordkeeping

The facility is able to use the centrifuge flow meter to measure the centrifuge rate (and indirectly, the wetcake feed rate to the dryer). This parameter is continuously monitored and recorded in the facility’s process historian.

Short-term Process Throughput ≤ 72.60 gpm syrup feed rate 3-hour block average. (Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title I Condition: Avoid major source under 40 CFR § 63.2)

Corn syrup flow meter, recordkeeping

The facility is able to use the corn syrup feed rate flow meter to measure the corn syrup feed rate to the dryer. This parameter is continuously monitored and recorded in the facility’s process historian.




STRU 79 RTO Bypass Stack

Operating Hours ≤ 50 hours/year 12-month rolling sum of DDGS dryer bypass of the RTO (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title I Condition: Avoid major source under 40 CFR § 63.2)

Daily records of hours of operation, monthly calculations, and records

For bypass operations, the Permittee is able to use daily records of hours to calculate monthly and 12-month rolling sum to show compliance with the limit. Because bypass events are not likely to occur uniformly throughout the year, with some months having very limited operations, a 12-month rolling sum is adequate to ensure the facility remains below PSD and NESHAPs thresholds.

STRU 80 DDGS Cooler Baghouse Stack

Operating Hours ≤ 50 hours/year 12-month rolling sum of DDGS cooler bypass of the dryer burners and the RTO (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title I Condition: Avoid major source under 40 CFR § 63.2)

Daily records of hours of operation, monthly calculations, and records

For bypass operations, the Permittee is able to use daily records of hours to calculate monthly and 12-month rolling sum to show compliance with the limit. Because bypass events are not likely to occur uniformly throughout the year, with some months having very limited operations, a 12-month rolling sum is adequate to ensure the facility remains below PSD and NESHAPs thresholds.

TREA 7 Grain Receiving Baghouse

Control efficiency for PM ≥ 99%. Control efficiency for PM2.5 ≥ 93%. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))

Daily and periodic inspections, daily pressure drop monitoring, operation and maintenance, corrective actions, recordkeeping, and performance testing

Monitoring based on the Minnesota Performance Standard for Control Equipment and the CAM plan submitted by the Permittee is adequate to have a reasonable assurance of compliance.

Control efficiency for PM10 ≥ 93%. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title V modeling)




PM collection efficiency ≥ 80%. (Minn. R. 7011.1005, subp. 3(E))

TREA 8 Hammermill Baghouse




Control efficiency for PM10 ≥ 93%. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title V modeling) PM collection efficiency ≥ 80%. (Minn. R. 7011.1005, subp. 3(E))

TREA 11 DDGS Loadout Baghouse



Monitoring based on the Minnesota Performance Standard for Control Equipment is adequate to have a reasonable assurance of compliance.

Control efficiency for PM10 ≥ 93%. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i), Title V modeling) PM collection efficiency ≥ 80%. (Minn. R. 7011.1005, subp. 3(E))




TREA 21 Flaring

Control efficiency for VOC ≥ 96.7%. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))

Daily and periodic inspections, daily flame presence, operation and maintenance, corrective actions, recordkeeping

Monitoring based on the Minnesota Performance Standard for Control Equipment and the CAM plan submitted by the Permittee is adequate to have a reasonable assurance of compliance. The presence of a flare pilot flame is monitored using a thermocouple or any other equivalent device to detect the presence of a flame. This will ensure that a flame is present at all times, and the control device is operating properly for compliance with the control efficiency limit. Control efficiency

for Benzene ≥ 96.7%. Control efficiency for Hexane ≥ 96.7%. Control efficiency for Toluene ≥ 96.7%. (Title I Condition: Avoid major source under 40 CFR § 63.2)


Control efficiency for VOC ≥ 95%. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))

Daily and periodic inspections, daily pressure drop, flow rate, and scrubber additive monitoring,

Monitoring based on the Minnesota Performance Standard for Control Equipment and the CAM plan submitted by the Permittee is adequate to have a reasonable assurance of compliance. In addition, per current MPCA guidance and historical




Control efficiency for Acetaldehyde ≥ 85%. Control efficiency for Acrolein ≥ 32.5%. Control efficiency for Formaldehyde ≥ 85%. Control efficiency for Methanol ≥ 95%. (Title I Condition: Avoid major source under 40 CFR § 63.2)

operation and maintenance, corrective actions, recordkeeping, and performance testing

testing on this unit/control, VOC (and speciated HAPs) emission rate and VOC control efficiency performance testing is required every 3 years. The minimum water flow rate limit, pressure drop range limit, and scrubber additive material usage rate limits are based on the MPCA-approved performance test on March 1-2, 2017. Approved Replicable Methodology (ARM) or protocol for resetting the Pressure Drop, Water Flow Rate, and Scrubber Additive Type and/or Rate limits: Per MPCA guidance, when the initial control equipment parameter is known or can reasonably be determined upfront AND where the permit includes periodic testing which will reset the parameter, the permit should contain the limit as well as an ARM or protocol for revising the limit through testing. In this instance, as long as the Permittee is implementing the ARM as required by the permit, the permit does not need to be reopened to revise the control equipment parameter limit. The Notice of Compliance that approves the new limit using an ARM will be filed with the permit in OnBase. Every level of permit action (from admin to major) can be used to incorporate revised parameter limits that were approved via an ARM. The establishment or revision of the ARM requires a major amendment process under Minn. R. 7007.1500, likely triggering one or all of: subp. 1(A) (revision to monitoring), 1(B) (case-by-case limit), and 1(C) (used for assuring compliance with a limit taken to avoid an applicable requirement).


Control efficiency for VOC ≥ 95%. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))

Daily and periodic inspections, daily pressure drop, flow rate, and scrubber additive monitoring,

Monitoring based on the Minnesota Performance Standard for Control Equipment and the CAM plan submitted by the Permittee is adequate to have a reasonable assurance of compliance. In addition, per current MPCA guidance and historical




Control efficiency for Acetaldehyde ≥ 85%. Control efficiency for Acrolein ≥ 32.5%. Control efficiency for Formaldehyde ≥ 85%. Control efficiency for Methanol ≥ 95%. (Title I Condition: Avoid major source under 40 CFR § 63.2)

operation and maintenance, corrective actions, recordkeeping, and performance testing

testing on this unit/control, VOC (and speciated HAPs) emission rate and VOC control efficiency performance testing is required every 5 years. The minimum water flow rate limit is based on the MPCA-approved performance test on March 1-2, 2017, and the pressure drop range limit is based on the MPCA-approved performance test on August 24-25, 2016. Approved Replicable Methodology (ARM) or protocol for resetting the Pressure Drop, Water Flow Rate, and Scrubber Additive Type and/or Rate limits: Per MPCA guidance, when the initial control equipment parameter is known or can reasonably be determined upfront AND where the permit includes periodic testing which will reset the parameter, the permit should contain the limit as well as an ARM or protocol for revising the limit through testing. In this instance, as long as the Permittee is implementing the ARM as required by the permit, the permit does not need to be reopened to revise the control equipment parameter limit. The Notice of Compliance that approves the new limit using an ARM will be filed with the permit in OnBase. Every level of permit action (from admin to major) can be used to incorporate revised parameter limits that were approved via an ARM. The establishment or revision of the ARM requires a major amendment process under Minn. R. 7007.1500, likely triggering one or all of: subp. 1(A) (revision to monitoring), 1(B) (case-by-case limit), and 1(C) (used for assuring compliance with a limit taken to avoid an applicable requirement).


Control efficiency for VOC ≥ 97%. Control efficiency for CO ≥ 97%. Control efficiency for PM ≥ 62%. Control efficiency for PM2.5 ≥ 62%. (Title I Condition: Avoid major source under 40 CFR § 52.21(b)(1)(i))

Temperature limit, continuous temperature monitoring, O & M, inspections, calibration, performance testing every 5 years for PM, PM10, PM2.5, and VOC.

Monitoring based on the Minnesota Performance Standard for Control Equipment and the CAM plan submitted by the Permittee is adequate to have a reasonable assurance of compliance. In addition, per current MPCA guidance and historical testing on this unit/control, PM/PM10/PM2.5 emission rate, carbon monoxide emission rate performance testing, VOC (and speciated HAPs) emission rate, VOC control efficiency performance testing is required every 5 years. The temperature limit is based on the last MPCA-approved performance test of December 10-11, 2014.





Approved Replicable Methodology (ARM) or protocol for resetting the temperature limit: Per MPCA guidance, when the initial control equipment parameter is known or can reasonably be determined upfront AND where the permit includes periodic testing which will reset the parameter, the permit should contain the limit as well as an ARM or protocol for revising the limit through testing. As long as the Permittee is implementing the ARM as required by the permit, the permit does not need to be reopened to revise the control equipment parameter limit. Every level of permit action (from admin to major) can be used to incorporate revised parameter limits that were approved via an ARM. The establishment or revision of the ARM requires a major amendment process under Minn. R. 7007.1500, likely triggering one or all of: subp. 1(A) (revision to monitoring), 1(B) (case-by-case limit), and 1(C) (used for assuring compliance with a limit taken to avoid an applicable requirement).

Control efficiency for Acetaldehyde ≥ 97%. Control efficiency for Acrolein ≥ 97%. Control efficiency for Formaldehyde ≥ 97%. Control efficiency for Methanol ≥ 97%. (Title I Condition: Avoid major source under 40 CFR § 63.2)

TREA 39 DDGS Cooler Baghouse





*Location of the requirement in the permit (e.g., EQUI 1, STRU 2, etc.).

3.15 Insignificant activities Green Plains Otter Tail LLC has several operations which are classified as insignificant activities under the MPCA’s permitting rules. These are listed in Appendix A to the permit. The permit is required to include periodic monitoring for all emissions units, including insignificant activities, per EPA guidance. The insignificant activities at this Facility are only subject to general applicable requirements. Using the criteria outlined earlier in this TSD, the following table documents the justification


why no additional periodic monitoring is necessary for the current insignificant activities. See Attachment 1 of this TSD for PTE information for the insignificant activities. Table 19. Insignificant activities

Insignificant activity General applicable emission limit Discussion

Indirect heating equipment with a heat input capacity less than 420,000 Btu/hour, etc.

PM ≤ 0.4 lb/MMBtu Opacity ≤ 20% with exceptions (Minn. R. 7011.0515)

The Permittee operates three (3) natural gas fired furnaces for heating office areas (0.21 MMBtu/hr total). For these units, based on the fuels used and EPA published emissions factors, it is highly unlikely that they could violate the applicable requirements.

Emissions from a laboratory, as defined in Minn. R. 7007.1300, subp. 3(D).

PM, variable depending on airflow Opacity ≤ 20% (Minn. R. 7011.0715)

The Permittee operates a product testing laboratory. These are very small, intermittent, bench-top operations that typically do not even have any emissions. It is highly unlikely that they could violate the applicable requirement.

Brazing, soldering, torch-cutting, or welding equipment


The Permittee operates welding equipment for plant maintenance. For these units, based on EPA published emissions factors, it is highly unlikely that they could violate the applicable requirement. In addition, these units are typically operated and vented inside a building, so testing for PM or opacity is not feasible.

Individual units with potential emissions less than 2000 lb/year of certain pollutants

Thin Stillage Loadout, CIP System, Corn Oil Tank, Yeast Mix Tank, and Corrosion Inhibitor Tank PM, variable depending on airflow Opacity ≤ 20% (Minn. R. 7011.0715) Space Heaters PM, variable depending on airflow Opacity ≤ 20% with exceptions (Minn. R. 7011.0610)

The Permittee operates a thin stillage loadout operation, a clean-in-place (CIP) system using a dilute caustic soda solution, a corn oil tank, a yeast mix tank, a corrosion inhibitor tank, six (6) natural gas fired (or steam supplied) space heaters (0.14 MMBtu/hr each) and two (2) kerosene fired space heaters (0.21 MMBtu/hr and 0.20 MMBtu/hr). For the natural gas and kerosene heaters, based on the fuels used and EPA published emissions factors, it is highly unlikely that they could violate the applicable requirement. In addition, all of these units are operated and vented inside a building, so testing for PM or opacity is not feasible. The thin stillage loadout, CIP system, corn oil tank, and yeast mix tank are not expected to generate PM emissions.

Fugitive dust emissions from unpaved roads and parking lots

Requirement to take reasonable measures to prevent PM from becoming airborne (Minn. R. 7011.0150)

Some unpaved pull-offs, parking spaces, or other unpaved areas exist at the facility which may potentially be used for non-routine traffic. The unpaved haul roads serving the temporary storage facility are denoted as subject item FUGI 18 in the permit. The draft permit contains a general requirement that this standard must be met.

Individual units with potential or actual emissions meeting the criteria in Minn. R. 7007.1300, subp. 4(A)-(D)


The Permittee operates a scalper bin used for catching large debris discharged from the scalper. Nearly all of the material routed to the scalper bin is as large or larger than a whole corn kernel; therefore, it is highly unlikely that this unit could violate the applicable requirement.


3.16 Permit organization In general, this permit meets the MPCA Tempo Guidance for ordering and grouping of requirements as well as the use of permit appendices, with a few exceptions as noted below. One item that deviates from MPCA Tempo Guidance is the listing of certain applicable requirements at the stack subject item (STRU) level, even though they apply at the individual unit. Specifically, the Industrial Process Equipment Rule (IPER) is listed at STRUs 22, 24, and 25, and the Bulk Ag. Rule (BAR) is listed at STRUs 7, 22, and 23 in the permit. In general, limits that apply to individual pieces of equipment should be tracked at the unit level and should not be listed at a stack subject item. The stack subject item has been chosen as the appropriate location for listing these limits in these instances due to the flexible permitting language structure contained within this permit. Compliance with all applicable limits for these stacks must be tracked on a stack-basis for all units venting to the stack. A second item that deviates from MPCA Tempo Guidance is the listing of the VOC percent overall control efficiency performance testing requirements at the stack subject item (STRU) level, rather than the control equipment subject item (TREA) level (see subject items STRUs 24, 25, and 26 of the permit). This change was made for improved permit clarity, because the VOC percent overall control efficiency testing is required to be performed consecutively with the VOC as mass (lb/hr) performance testing. A third item that deviates from MPCA Tempo Guidance is that the semiannual report required by 40 CFR pt. 60, subp. VV has been listed at subject item TFAC 2 in Section 6 (just below the semiannual deviations reporting requirement). This change was made so that the semiannual reporting requirements are listed in the same general location in the permit for clarity. The semiannual reports required by 40 CFR pt. 60, subp. VV are required to be submitted with the semiannual deviations reports required by the permit.

3.17 Comments received This section will be completed after the referenced review periods. Public Notice Period: [start date] – [end date] EPA Review Period: [start date] – [end date]

4. Permit fee assessment This permit action is the reissuance of an individual Part 70; therefore, no application fees apply under Minn. R. 7002.0016, subp. 1 to the changes that are covered by the reissuance application. However, the permit action rolls in two additional administrative amendment applications to which fees do apply. There are no additional points for either of these administrative amendment applications. The action includes the incorporation of a second NESHAP, however this was an existing standard that applied to the facility and is not a chargeable activity (i.e., the standard was not triggered by the modifications requested in the permit applications – it falls under a permit reopening being incorporated in the reissuance).

5. Conclusion Based on the information provided by Green Plains Otter Tail LLC the MPCA has reasonable assurance that the proposed operation of the emission facility, as described in the Air Emission Permit No. 11100077-101 and this TSD, will not cause or contribute to a violation of applicable federal regulations and Minnesota Rules. Staff members on permit team: Joseph Carlson (permit engineer)

Andrew Luberda (peer reviewer) Bonnie Nelson (peer reviewer) Steven Palzkill (enforcement) Curtis Stock (stack testing)


Michaela Leach (permit writing assistant) Laurie O'Brien (administrative support)

TEMPO360 Activities: Administrative Amendment (IND20150001), Administrative Amendment (IND20170004), Part 70 Reissuance (IND20170003)

Attachments: 1. PTE summary and calculation spreadsheets 2. Subject item inventory and facility requirements 3. 4/20/18 PM10 Modeling Results Documents (Scenario 1) 4. 9/28/18 PM10 Modeling Results Documents (Scenario 2) 5. CAM plan 6. Permit Reopenings 7. Process Flow Diagram 8. 1995 U.S. EPA Memorandum “Calculating Potential to Emit (PTE) for Emergency Generators”

Green Plains Otter Tail LLC Permit No. 11100077‐101 Technical Support Document Attachment 1 PTE Summary and Calculation Spreadsheets

Facility-Wide Potential to Emit - Operation/Production BasisGreen Plains Otter Tail, LLCFergus Falls, MN

Operating rates:Maximum Daily: 24 hr/dayMaximum Annual: 8,760 hr/yrDDGS Dryer Start-Up (AOS) 50 hr/yrDDGS Cooler RTO Bypass to Atmosphere (AOS) 50 hr/yr

DDGS Dryers: 90.0 MMBtu/hrRegenerative Thermal Oxidizer: 18.0 MMBtu/hrBoiler #1: 92.4 MMBtu/hrBoiler #2: 92.4 MMBtu/hrLoadout Flare: 0.0204 MMBtu/hrBoiler Make-Up Air Heater: 5.06 MMBtu/hr

Production Rate Assumptions:Undenatured Ethanol Production: 65,000,000 gal/yr (permit limit)Maximum Denaturant Percentage: 2.49%Denatured Ethanol Production 66,659,830 gal/yrDenatured Ethanol Yield: 2.68 gal/bu190-Proof Ethanol Production 68,421,053 gal/yrCorn Density: 56 lb/buCorn Received: 7,250 tons/dayIndoor Grain Receiving Straight Trucks 14 trucks/dayTemporary Corn Pile Straight Trucks 0 trucks/dayTemporary Corn Pile Grain Received 260,000 bu/dayTotal Corn Processed

Annual, volume: 24,253,731 bu/yrAnnual, weight: 679,104 tpy

Temporary Corn Pile Annual Throughput: 59,640 tpyDDGS Yield: 17.5 lb/bu cornDDGS Production 212,220 tpyDDGS Production 30.00 tons/hrWetcake Production: assuming 32% solids 663,188 tpyWetcake Production: assuming 32% solids 93.75 tons/hrDenaturant Delivery (assume maximum 2.49% by volume)

Volume: 1,659,830 gal/yrDenatured Ethanol Loadout

Annual: 66,659,830 gal/yrNote: Values are not permit limitations unless specified as such.

Facility-Wide Potential to Emit, Controlled Hourly Emissions (lb/hr)Green Plains Otter Tail, LLCFergus Falls, MN

DescriptionPM

(lb/hr)PM10

(lb/hr)PM2.5

(lb/hr)SO2

(lb/hr)CO

(lb/hr)NOx

(lb/hr)VOC

(lb/hr)Ammonia

(lb/hr)STRU7 SV001 TREA7 CE001 Grain Receiving with Baghouse 3.17 3.17 3.17STRU22 SV008 TREA8 CE008 Hammermill with Baghouse 2.04 2.04 2.04STRU23 SV011 TREA11 CE011 DDGS Loadout with Baghouse 0.410 0.410 0.410STRU24 SV026 TREA22 CE027 Fermentation with CO2 Scrubber 11.3STRU25 SV027 TREA23 CE028 Distillation (Vent Gas) Scrubber 4.75

EQUI55 EU050 TREA25 CE030 DDGS Dryer 0.283TREA25 CE030 -- -- Thermal Oxidizer 0.0565

TREA25 CE030 STRU26 (DDGS with Thermal Oxidizer) 5.15 5.15 5.15 3.00 12.9 3.33 5.00EQUI55 EU050 STRU79 -- -- DDGS Dryer Startup AOS - Dryer Comb. (50 hr/yr) 0.671 0.671 0.671 0.0529 7.41 10.6 0.485 0.283TREA25 CE030 STRU26 -- -- DDGS Dryer Startup AOS - RTO Comb. (*STRU 26 normal operation is worst-case) 0.134 0.134 0.134 0.0106 1.48 1.76 0.0971 0.0565

EQUI56 EU051 STRU80 -- -- DDGS Cooler RTO Bypass AOS (50 hr/yr) 1.37 1.37 1.37 10.5EQUI4 EU031 Truck Ethanol Loadout 11.1

EQUI116 -- Rail Ethanol Loadout 0.583TREA21 CE026 -- -- Flare 1.20E-05 2.35 1.01 6.40E-05EQUI8 EU058 STRU27 SV036 -- -- Grain Bin #1 10.5 2.65 0.462EQUI9 EU059 STRU28 SV037 -- -- Grain Bin #2 10.5 2.65 0.462

EQUI10 EU060 STRU31 SV038 -- -- Grain Bin #3 10.5 2.65 0.462EQUI13 EU063 STRU30 SV039 -- -- Grain Bin #4 10.5 2.65 0.462EQUI16 EU066 STRU29 SV040 -- -- Grain Bin #5 10.5 2.65 0.462

STRU36 SV034STRU37 SV035

EQUI35 EU028 STRU33 SV022 -- -- Boiler 1 0.707 0.707 0.707 5.45E-02 7.57 13.1 1.01 0.290EQUI36 EU029 STRU34 SV023 -- -- Boiler 2 0.707 0.707 0.707 5.45E-02 7.57 13.1 1.01 0.290EQUI58 TK001 -- -- -- -- 200 Proof Tank 0.0389EQUI59 TK002 -- -- -- -- 200 Proof Tank 0.0389EQUI60 TK003 -- -- -- -- Denaturant Storage Tank 0.115EQUI61 TK004 -- -- -- -- Denatured Ethanol Tank 1 0.0380EQUI62 TK005 -- -- -- -- Denatured Ethanol Tank 2 0.0380EQUI108 EU026 STRU32 SV020 -- -- Fire Pump 0.0710 0.0710 0.0710 1.29E-03 0.477 5.18 0.0913EQUI117 -- -- -- -- -- Corn Dump Pit/Auger 1 (Uncaptured) 12.8 3.13 0.524EQUI118 -- -- -- -- -- Corn Dump Pit/Auger 2 (Uncaptured) 12.8 3.13 0.524EQUI129 -- -- -- -- -- DDGS Storage Conveyor 1 9.90E-02 2.40E-02 2.40E-02EQUI130 -- -- -- -- -- DDGS Storage Conveyor 2 9.90E-02 2.40E-02 2.40E-02EQUI131 -- -- -- -- -- DDGS Storage Elevator 9.90E-02 2.40E-02 2.40E-02EQUI132 -- -- -- -- -- DDGS Storage Conveyor 3 9.90E-02 2.40E-02 2.40E-02EQUI133 -- -- -- -- -- DDGS Storage Conveyor 4 9.90E-02 2.40E-02 2.40E-02EQUI134 -- -- -- -- -- DDGS Reclaim via Front End Loader 0.594 0.144 0.144EQUI135 -- -- -- -- -- DDGS Reclaim Dump Pit 0.594 0.144 0.144EQUI138 -- -- -- -- -- DDGS Load Spout (Truck/Rail, Uncaptured) 0.594 0.144 0.144EQUI151 -- -- -- -- -- Gasoline Tank (1,000 gal) 4.04E-02EQUI152 -- -- -- -- -- Gasoline Dispensing 7.02EQUI169 -- -- -- -- -- Boiler Make-Up Air Heater 0.0377 0.0377 0.0377 2.98E-03 0.228 0.253 0.0273 0.0159

FUGI7 EU017 -- -- -- -- Cooling Tower Cell 1 0.834 0.502 1.76E-03FUGI8 EU018 -- -- -- -- Cooling Tower Cell 2 0.834 0.502 1.76E-03FUGI9 EU019 -- -- -- -- Cooling Tower Cell 3 0.834 0.502 1.76E-03FUGI11 FS007 -- -- -- -- Grain Receiving and Conveying at Temporary Storage Facility 27.3 6.26 1.06FUGI15 FS005 -- -- -- -- Equipment Leaks 8.98FUGI16 FS006 -- -- -- -- Wetcake - AOS 0.781FUGI17 FS004 -- -- -- -- Paved Roads 14.0 2.80 0.686FUGI18 -- -- -- -- -- Unpaved Roads 48.4 14.3 1.43FUGI19 -- -- -- -- Grain Reclaim Operations at Temporary Storage Facility 18.4 5.51 0.786FUGI20 -- -- -- -- Wind Erosion at Temporary Storage Facility 1.21 0.606 0.0970

TOTAL Non-Fugitive Sources 95.0 34.8 18.7 3.19 40.1 70.7 54.3 1.22TOTAL 207 65.8 22.7 3.19 40.1 70.7 64.0 1.22CO = carbon monoxideNOX = nitrogen oxidesPM = particulate matterPM10 = particulate matter less than 10 micron aerodynamic diameterPM2.5 = particulate matter less than 2.5 micron aerodynamic diameterSO2 = sulfur dioxideVOC = volatile organic compoundsHAP = hazardous air pollutant

Various

STRU35 SV025

STRU26

Various

SV028Various

--EQUI18 EU027

TREA21 CE026

Emission Source

24.1 1.16Emergency Generator 0.412 0.412 0.412 2.06E-02 1.61

Stack/Vent Control EquipmentVariousVariousVarious

--

Facility-Wide Potential to Emit, Uncontrolled (tpy)Green Plains Otter Tail, LLCFergus Falls, MN

DescriptionPM

(tpy)PM10

(tpy)PM2.5

(tpy)SO2

(tpy)CO

(tpy)NOx(tpy)

VOC (tpy)

Ammonia (tpy)

STRU7 SV001 TREA7 CE001 Grain Receiving with Baghouse 1053 538 121STRU22 SV008 TREA8 CE008 Hammermill with Baghouse 763 411 70STRU23 SV011 TREA11 CE011 DDGS Loadout with Baghouse 15.4 3.73 3.73STRU24 SV026 TREA22 CE027 Fermentation with CO2 Scrubber 988STRU25 SV027 TREA23 CE028 Distillation (Vent Gas) Scrubber 416


TREA25 CE030 STRU26 (DDGS with Thermal Oxidizer) 59.4 59.4 59.4 13.1 1,885 14.6 730EQUI55 EU050 STRU79 -- -- DDGS Dryer Startup AOS - Dryer Comb. (50 hr/yr) 2.94 2.94 2.94 0.232 32.5 46.4 2.13 1.24TREA25 CE030 STRU26 -- -- DDGS Dryer Startup AOS - RTO Comb. (*STRU 26 normal operation is worst-case) 0.587 0.587 0.587 0.0464 6.49 7.73 0.425 0.248

EQUI56 EU051 STRU80 -- -- DDGS Cooler RTO Bypass AOS (50 hr/yr) 599 85.6 85.6 45.9EQUI4 EU031 Truck Ethanol Loadout 208

EQUI116 -- Rail Ethanol Loadout 9.89TREA21 CE026 -- -- Flare 5.26E-05 1.31 0.559 2.80E-04EQUI8 EU058 STRU27 SV036 -- -- Grain Bin #1 46.0 11.6 2.02EQUI9 EU059 STRU28 SV037 -- -- Grain Bin #2 46.0 11.6 2.02



EQUI35 EU028 STRU33 SV022 -- -- Boiler 1 3.10 3.10 3.10 0.239 33.2 57.5 4.42 1.27EQUI36 EU029 STRU34 SV023 -- -- Boiler 2 3.10 3.10 3.10 0.239 33.2 57.5 4.42 1.27EQUI58 TK001 -- -- -- -- 200 Proof Tank 0.171EQUI59 TK002 -- -- -- -- 200 Proof Tank 0.171EQUI60 TK003 -- -- -- -- Denaturant Storage Tank 0.505EQUI61 TK004 -- -- -- -- Denatured Ethanol Tank 1 0.166EQUI62 TK005 -- -- -- -- Denatured Ethanol Tank 2 0.166EQUI108 EU026 STRU32 SV020 -- -- Fire Pump 0.311 0.311 0.311 0.00567 2.09 22.7 0.400EQUI117 -- -- -- -- -- Corn Dump Pit/Auger 1 (Uncaptured) 7.17 1.76 0.295EQUI118 -- -- -- -- -- Corn Dump Pit/Auger 2 (Uncaptured) 7.17 1.76 0.295EQUI129 -- -- -- -- -- DDGS Storage Conveyor 1 0.350 0.0849 0.0849EQUI130 -- -- -- -- -- DDGS Storage Conveyor 2 0.350 0.0849 0.0849EQUI131 -- -- -- -- -- DDGS Storage Elevator 0.350 0.0849 0.0849EQUI132 -- -- -- -- -- DDGS Storage Conveyor 3 0.350 0.0849 0.0849EQUI133 -- -- -- -- -- DDGS Storage Conveyor 4 0.350 0.0849 0.0849EQUI134 -- -- -- -- -- DDGS Reclaim via Front End Loader 0.350 0.0849 0.0849EQUI135 -- -- -- -- -- DDGS Reclaim Dump Pit 0.350 0.0849 0.0849EQUI138 -- -- -- -- -- DDGS Load Spout (Truck/Rail, Uncaptured) 0.350 0.0849 0.0849EQUI151 -- -- -- -- -- Gasoline Tank (1,000 gal) 0.177EQUI152 -- -- -- -- -- Gasoline Dispensing 30.7EQUI169 -- -- -- -- -- Boiler Make-Up Air Heater 0.165 0.165 0.165 0.0130 0.998 1.11 0.120 0.0696

FUGI7 EU017 -- -- -- -- Cooling Tower Cell 1 3.65 2.20 0.00771FUGI8 EU018 -- -- -- -- Cooling Tower Cell 2 3.65 2.20 0.00771FUGI9 EU019 -- -- -- -- Cooling Tower Cell 3 3.65 2.20 0.00771FUGI11 FS007 -- -- -- -- Grain Receiving and Conveying at Temporary Storage Facility 120 27.4 4.62FUGI15 FS005 -- -- -- -- Equipment Leaks 39.3FUGI16 FS006 -- -- -- -- Wetcake - AOS 3.42FUGI17 FS004 -- -- -- -- Paved Roads 7.54 1.51 0.370FUGI18 -- -- -- -- -- Unpaved Roads 3.97 1.17 0.117FUGI19 -- -- -- -- Grain Reclaim Operations at Temporary Storage Facility 265 82.9 13.4FUGI20 -- -- -- -- Wind Erosion at Temporary Storage Facility 2.21 1.11 0.177

TOTAL Non-Fugitive Sources 2,748 1,172 362 14.0 1,995 306 2,447 5.33TOTAL 3,157 1,293 381 14.0 1,995 306 2,489 5.33CO = carbon monoxideNOX = nitrogen oxidesPM = particulate matterPM10 = particulate matter less than 10 micron aerodynamic diameterPM2.5 = particulate matter less than 2.5 micron aerodynamic diameterSO2 = sulfur dioxideVOC = volatile organic compoundsHAP = hazardous air pollutant

Emission Source

106 5.09Emergency Generator 1.81 1.81 1.81 9.04E-02 7.06

Stack/Vent Control EquipmentVariousVariousVariousVariousVarious

STRU26 SV028

STRU35 SV025

Various

TREA21 CE026

EQUI18 EU027 -- --

Facility-Wide Potential to Emit, Limited (tpy)Green Plains Otter Tail, LLCFergus Falls, MN

DescriptionPM

(tpy)PM10

(tpy)PM2.5

(tpy)SO2

(tpy)CO

(tpy)NOx(tpy)

VOC (tpy)

Ammonia (tpy)

STRU7 SV001 TREA7 CE001 Grain Receiving with Baghouse 13.9 13.9 13.9STRU22 SV008 TREA8 CE008 Hammermill with Baghouse 8.94 8.94 8.94STRU23 SV011 TREA11 CE011 DDGS Loadout with Baghouse 1.80 1.80 1.80STRU24 SV026 TREA22 CE027 Fermentation with CO2 Scrubber 49.4STRU25 SV027 TREA23 CE028 Distillation (Vent Gas) Scrubber 20.8


TREA25 CE030 STRU26 (DDGS with Thermal Oxidizer) 22.6 22.6 22.6 13.1 56.5 14.6 21.9EQUI55 EU050 STRU79 -- -- DDGS Dryer Startup AOS - Dryer Comb. (50 hr/yr) 0.0168 0.0168 0.0168 1.32E-03 0.185 0.265 0.0121 7.07E-03TREA25 CE030 STRU26 -- -- DDGS Dryer Startup AOS - RTO Comb. (*STRU 26 normal operation is worst-case) 3.35E-03 3.35E-03 3.35E-03 2.65E-04 0.0371 0.0441 2.43E-03 1.41E-03EQUI56 EU051 STRU80 -- -- DDGS Cooler RTO Bypass AOS (50 hr/yr) 0.0342 0.0342 0.0342 0.262EQUI4 EU031 Truck Ethanol Loadout 6.81

EQUI116 -- Rail Ethanol Loadout *(truck loadout is worst-case) 0.324TREA21 CE026 -- -- Flare 5.26E-05 1.31 0.559 2.80E-04EQUI8 EU058 STRU27 SV036 -- -- Grain Bin #1 1.70 0.428 0.0747EQUI9 EU059 STRU28 SV037 -- -- Grain Bin #2 1.70 0.428 0.0747



EQUI35 EU028 STRU33 SV022 -- -- Boiler 1 3.10 3.10 3.10 0.239 33.2 57.5 4.42 1.27EQUI36 EU029 STRU34 SV023 -- -- Boiler 2 3.10 3.10 3.10 0.239 33.2 57.5 4.42 1.27EQUI58 TK001 -- -- -- -- 200 Proof Tank 0.171EQUI59 TK002 -- -- -- -- 200 Proof Tank 0.171EQUI60 TK003 -- -- -- -- Denaturant Storage Tank 0.505EQUI61 TK004 -- -- -- -- Denatured Ethanol Tank 1 0.166EQUI62 TK005 -- -- -- -- Denatured Ethanol Tank 2 0.166EQUI108 EU026 STRU32 SV020 -- -- Fire Pump 0.0177 0.0177 0.0177 3.24E-04 0.119 1.30 0.0228EQUI117 -- -- -- -- -- Corn Dump Pit/Auger 1 (Uncaptured) 7.17 1.76 0.295EQUI118 -- -- -- -- -- Corn Dump Pit/Auger 2 (Uncaptured) 7.17 1.76 0.295EQUI129 -- -- -- -- -- DDGS Storage Conveyor 1 0.350 0.0849 0.0849EQUI130 -- -- -- -- -- DDGS Storage Conveyor 2 0.350 0.0849 0.0849EQUI131 -- -- -- -- -- DDGS Storage Elevator 0.350 0.0849 0.0849EQUI132 -- -- -- -- -- DDGS Storage Conveyor 3 0.350 0.0849 0.0849EQUI133 -- -- -- -- -- DDGS Storage Conveyor 4 0.350 0.0849 0.0849EQUI134 -- -- -- -- -- DDGS Reclaim via Front End Loader 0.350 0.0849 0.0849EQUI135 -- -- -- -- -- DDGS Reclaim Dump Pit 0.350 0.0849 0.0849EQUI138 -- -- -- -- -- DDGS Load Spout (Truck/Rail, Uncaptured) 0.350 0.0849 0.0849EQUI151 -- -- -- -- -- Gasoline Tank (1,000 gal) 0.177EQUI152 -- -- -- -- -- Gasoline Dispensing 0.702EQUI169 Boiler Make-Up Air Heater 0.165 0.165 0.165 0.0130 0.998 1.11 0.120 0.0696

FUGI7 EU017 -- -- -- -- Cooling Tower Cell 1 3.65 2.20 7.71E-03FUGI8 EU018 -- -- -- -- Cooling Tower Cell 2 3.65 2.20 7.71E-03FUGI9 EU019 -- -- -- -- Cooling Tower Cell 3 3.65 2.20 7.71E-03FUGI11 FS007 -- -- -- -- Grain Receiving and Conveying at Temporary Storage Facility 1.34 0.308 0.0519FUGI15 FS005 -- -- -- -- Equipment Leaks 39.3FUGI16 FS006 -- -- -- -- Wetcake - AOS 3.42FUGI17 FS004 -- -- -- -- Paved Roads 7.54 1.51 0.370FUGI18 -- -- -- -- -- Unpaved Roads 0.795 0.235 0.0235FUGI19 -- -- -- -- Grain Reclaim Operations at Temporary Storage Facility 2.13 0.640 0.0913FUGI20 -- -- -- -- Wind Erosion at Temporary Storage Facility 2.21 1.11 0.177

TOTAL Non-Fugitive Sources 79.3 60.0 55.3 13.6 126 139 111 4.10TOTAL 104 70.4 56.1 13.6 126 139 153 4.10CO = Carbon MonoxideNOX = Nitrogen OxidesPM = Particulate MatterPM10 = Particulate Matter less than 10 micron aerodynamic diameterPM2.5 = Particulate Matter less than 2.5 micron aerodynamic diameterSO2 = Sulfur DioxideVOC = Volatile Organic CompoundsHAP = Hazardous Air Pollutant

TREA21 CE026

EQUI18 EU027 -- --

Various

STRU26 SV028

STRU35 SV025

Various

Emission Source

Emergency Generator 6.03 0.2900.103 0.103 0.103 5.16E-03 0.403

Stack/Vent Control EquipmentVariousVariousVariousVarious

Facility-Wide Potential to Emit - HAP Emissions Summary, Controlled Hourly Emissions (lb/hr)Green Plains Otter Tail, LLCFergus Falls, MN

Hazardous Air Pollutant CAS No.

Fermentation Scrubber

(STRU24/SV026)

Vent Gas Scrubber

(STRU25/SV027)DDGS Dryer

(EQUI55/EU050)

Regenerative Thermal Oxidizer (TREA25/CE030)

STRU26/SV028 (Dryer, Cooler, + RTO Combined)

DDGS Dryer Startup AOS - Dryer Comb.

(50 hr/yr) 1

DDGS Dryer Startup AOS - RTO Comb.

(50 hr/yr) 2

Acetaldehyde 75-07-0 8.41E-01 3.00E-01 2.67E-01Acrolein 107-02-8 4.00E-02 6.25E-03 8.75E-02Formaldehyde 50-00-0 2.00E-02 3.75E-03 9.96E-02 6.62E-03 1.32E-03

Methanol 67-56-1 9.50E-02 3.75E-03 2.50E-021,3 - Butadiene 106-99-02,2,4 Trimethylpentane 540-84-12-Methylnaphthalene 91-57-6 2.12E-06 4.24E-07 2.12E-06 4.24E-07

3-Methylchloranthrene 56-49-5 1.59E-07 3.18E-08 1.59E-07 3.18E-08

7,12-Dimethylbenz(a)anthracene 57-97-6 1.41E-06 2.82E-07 1.41E-06 2.82E-07

Acenaphthene 83-32-9 1.59E-07 3.18E-08 1.59E-07 3.18E-08

Acenaphthylene 203-96-8 1.59E-07 3.18E-08 1.59E-07 3.18E-08

Anthracene 120-12-7 2.12E-07 4.24E-08 2.12E-07 4.24E-08

Arsenic 7440-38-2 1.76E-05 3.53E-06 1.76E-05 3.53E-06

Benz(a)anthracene 56-55-3 1.59E-07 3.18E-08 1.59E-07 3.18E-08

Benzene 71-43-2 1.85E-04 3.71E-05 1.85E-04 3.71E-05

Benzo(a)pyrene 50-32-8 1.06E-07 2.12E-08 1.06E-07 2.12E-08

Benzo(b)fluoranthene 205-99-2 1.59E-07 3.18E-08 1.59E-07 3.18E-08

Benzo(g,h,i)perylene 191-24-2 1.06E-07 2.12E-08 1.06E-07 2.12E-08

Benzo(k)fluoranthene 205-82-3 1.59E-07 3.18E-08 1.59E-07 3.18E-08

Beryllium 7440-41-7 1.06E-06 2.12E-07 1.06E-06 2.12E-07

Cadmium 7440-43-9 9.71E-05 1.94E-05 9.71E-05 1.94E-05

Chromium 7440-47-3 1.24E-04 2.47E-05 1.24E-04 2.47E-05

Chrysene 218-01-9 1.59E-07 3.18E-08 1.59E-07 3.18E-08

Cobalt 7440-48-4 7.41E-06 1.48E-06 7.41E-06 1.48E-06

Dibenzo(a,h)anthracene 53-70-3 1.06E-07 2.12E-08 1.06E-07 2.12E-08

Dichlorobenzene 25321-22-6 1.06E-04 2.12E-05 1.06E-04 2.12E-05

Ethylbenzene 100-41-4Fluoranthene 206-44-0 2.65E-07 5.29E-08 2.65E-07 5.29E-08

Fluorene 86-73-7 2.47E-07 4.94E-08 2.47E-07 4.94E-08

Hexane 110-54-3 1.59E-01 3.18E-02 1.59E-01 3.18E-02

Indeno(1,2,3-cd)pyrene 193-39-5 1.59E-07 3.18E-08 1.59E-07 3.18E-08

Lead 7439-92-1 4.41E-05 8.82E-06 4.41E-05 8.82E-06

Manganese 7439-96-5 3.35E-05 6.71E-06 3.35E-05 6.71E-06

Mercury 7439-97-6 2.29E-05 4.59E-06 2.29E-05 4.59E-06

Naphthalene 91-20-3 5.38E-05 1.08E-05 5.38E-05 1.08E-05

Nickel 7440-02-0 1.85E-04 3.71E-05 1.85E-04 3.71E-05

Phenanthrene 85-01-8 1.50E-06 3.00E-07 1.50E-06 3.00E-07

Pyrene 129-00-0 4.41E-07 8.82E-08 4.41E-07 8.82E-08

Selenium 7782-49-2 2.12E-06 4.24E-07 2.12E-06 4.24E-07

Toluene 108-88-3 3.00E-04 6.00E-05 3.00E-04 6.00E-05

Xylenes 1330-20-7Total Polycyclic Organic Matter (POM) 6.16E-05 1.23E-05 6.16E-05 1.23E-05

Total HAPs 0.996 0.314 0.167 0.033

1. Formaldehyde emissions from dryer natural gas combustion during bypass are included in total. All other combustion HAPs already counted at EQUI 55

PTE HAP Emissions by Emission Point (lb/hr)

0.671

DDGS Cooler RTO Bypass

AOS (50 hr/yr)Boiler #1

(EQUI35/EU028)Boiler #2

(EQUI36/EU029)Fire Pump

(EQUI108/EU026)

Emergency Generator

(EQUI18/EU027)

Ethanol Loadout Flare

(TREA21/CE026)

Truck Ethanol Loadout

(EQUI4/EU031)

Rail Ethanol Loadout

(EQUI116)

Denaturant Storage Tank

(EQUI60/TK003)

Denatured Ethanol #1

(EQUI61/TK004)Denatured Ethanol #2

(EQUI62/TK005)1.01 2.47E-03 3.00E-041.16 2.98E-04 9.38E-05

0.0222 6.79E-03 6.79E-03 3.80E-03 9.39E-04 1.50E-060.461

1.26E-04

2.17E-06 2.17E-06 4.80E-101.63E-07 1.63E-07 3.60E-111.45E-06 1.45E-06 3.20E-101.63E-07 1.63E-07 4.57E-06 5.57E-05 3.60E-111.63E-07 1.63E-07 1.63E-05 1.10E-04 3.60E-112.17E-07 2.17E-07 6.02E-06 1.46E-05 4.80E-111.81E-05 1.81E-05 4.00E-091.63E-07 1.63E-07 5.41E-06 7.40E-06 3.60E-111.90E-04 1.90E-04 3.00E-03 9.23E-03 4.20E-08 3.54E-01 1.86E-02 3.69E-03 2.27E-04 2.27E-041.09E-07 1.09E-07 6.05E-07 3.06E-06 2.40E-111.63E-07 1.63E-07 3.19E-07 1.32E-05 3.60E-111.09E-07 1.09E-07 1.57E-06 6.62E-06 2.40E-111.63E-07 1.63E-07 4.99E-07 2.59E-06 3.60E-111.09E-06 1.09E-06 2.40E-109.96E-05 9.96E-05 2.20E-081.27E-04 1.27E-04 2.80E-081.63E-07 1.63E-07 1.14E-06 1.82E-05 3.60E-117.61E-06 7.61E-06 1.68E-091.09E-07 1.09E-07 1.88E-06 4.12E-06 2.40E-111.09E-04 1.09E-04 2.40E-08

2.72E-07 2.72E-07 2.45E-05 4.80E-05 6.00E-112.54E-07 2.54E-07 9.40E-05 1.52E-04 5.60E-111.63E-01 1.63E-01 3.60E-05 3.21E+00 1.69E-01 3.35E-02 2.06E-03 2.06E-031.63E-07 1.63E-07 1.21E-06 4.93E-06 3.60E-114.53E-05 4.53E-05 1.00E-083.44E-05 3.44E-05 7.60E-092.36E-05 2.36E-05 5.20E-095.53E-05 5.53E-05 2.73E-04 1.55E-03 1.22E-081.90E-04 1.90E-04 4.20E-081.54E-06 1.54E-06 9.47E-05 4.86E-04 3.40E-104.53E-07 4.53E-07 1.54E-05 4.41E-05 1.00E-102.17E-06 2.17E-06 4.80E-103.08E-04 3.08E-04 1.32E-03 3.34E-03 6.80E-08 3.32E-01 1.75E-02 3.46E-03 2.13E-04 2.13E-04

9.18E-04 2.30E-036.32E-05 6.32E-05 5.41E-04 2.52E-03 1.40E-08

2.66 0.171 0.171 1.25E-02 1.87E-02 3.78E-05 3.90 0.205 4.06E-02 2.50E-03 2.50E-03


Gasoline Tank (EQUI151)

Gasoline Dispensing (EQUI152)

Boiler Make-Up Air Heater (EQUI169)

VOC Leaks (FUGI15/FS005)

Wetcake - AOS (FUGI15/FS005)

Total (lb/hr) 1

6.88E-02 5.21E-03 2.504.97E-03 7.81E-04 1.303

1.63E-03 3.37E-03 3.13E-02 0.2079.37E-03 6.51E-03 0.600

1.26E-041.05E-03 1.83E-01 0.184

1.19E-07 7.01E-068.93E-09 5.26E-077.94E-08 4.67E-068.93E-09 6.08E-058.93E-09 1.27E-041.19E-08 2.14E-059.93E-07 5.84E-058.93E-09 1.33E-05

8.89E-04 1.54E-01 1.04E-05 2.32E-03 0.5485.96E-09 4.01E-068.93E-09 1.41E-055.96E-09 8.54E-068.93E-09 3.62E-065.96E-08 3.50E-065.46E-06 3.21E-046.95E-06 4.09E-048.93E-09 1.99E-054.17E-07 2.45E-055.96E-09 6.35E-065.96E-06 3.50E-04

2.02E-04 3.51E-02 3.53E-021.49E-08 7.33E-051.39E-08 2.47E-04

1.78E-03 3.09E-01 8.93E-03 2.11E-02 4.27E+008.93E-09 6.66E-062.48E-06 1.46E-041.89E-06 1.11E-041.29E-06 7.59E-053.03E-06 2.00E-031.04E-05 6.13E-048.44E-08 5.85E-042.48E-08 6.10E-051.19E-07 7.01E-06

1.62E-03 2.81E-01 1.69E-05 2.18E-03 6.44E-016.06E-04 1.05E-01 1.09E-01

3.46E-06 3.26E-034.45E-03 0.772 9.37E-03 1.12E-01 4.38E-02 10.11


Facility-Wide Potential to Emit - HAP Emissions Summary, Uncontrolled (tpy)Green Plains Otter Tail, LLCFergus Falls, MN



(STRU24/SV026)

Vent Gas Scrubber


(EQUI55/EU050)




(50 hr/yr) 1

DDGS Dryer Startup AOS - RTO Comb.

(50 hr/yr) 2

Acetaldehyde 75-07-0 24.6 8.76 38.9Acrolein 107-02-8 0.260 0.0406 12.8Formaldehyde 50-00-0 0.584 0.110 14.5 2.90E-02 5.80E-03

Methanol 67-56-1 8.32 0.329 3.651,3 - Butadiene 106-99-02,2,4 Trimethylpentane 540-84-12-Methylnaphthalene 91-57-6 9.28E-06 1.86E-06 9.28E-06 1.86E-06





Anthracene 120-12-7 9.28E-07 1.86E-07 9.28E-07 1.86E-07

Arsenic 7440-38-2 7.73E-05 1.55E-05 7.73E-05 1.55E-05


Benzene 71-43-2 8.12E-04 1.62E-04 8.12E-04 1.62E-04





Beryllium 7440-41-7 4.64E-06 9.28E-07 4.64E-06 9.28E-07

Cadmium 7440-43-9 4.25E-04 8.50E-05 4.25E-04 8.50E-05

Chromium 7440-47-3 5.41E-04 1.08E-04 5.41E-04 1.08E-04

Chrysene 218-01-9 6.96E-07 1.39E-07 6.96E-07 1.39E-07

Cobalt 7440-48-4 3.25E-05 6.49E-06 3.25E-05 6.49E-06




Fluorene 86-73-7 1.08E-06 2.16E-07 1.08E-06 2.16E-07

Hexane 110-54-3 6.96E-01 1.39E-01 6.96E-01 1.39E-01


Lead 7439-92-1 1.93E-04 3.86E-05 1.93E-04 3.86E-05

Manganese 7439-96-5 1.47E-04 2.94E-05 1.47E-04 2.94E-05

Mercury 7439-97-6 1.00E-04 2.01E-05 1.00E-04 2.01E-05


Nickel 7440-02-0 8.12E-04 1.62E-04 8.12E-04 1.62E-04


Pyrene 129-00-0 1.93E-06 3.86E-07 1.93E-06 3.86E-07

Selenium 7782-49-2 9.28E-06 1.86E-06 9.28E-06 1.86E-06

Toluene 108-88-3 1.31E-03 2.63E-04 1.31E-03 2.63E-04


Total HAPs 33.7 9.24 0.730 0.146

1. Formaldehyde emissions from dryer natural gas combustion during bypass are included in total. All other combustion HAPs already counted at EQUI 55

PTE HAP Emissions by Emission Point (tpy)

70.7





(EQUI108/EU026)

Emergency Generator

(EQUI18/EU027)


(TREA21/CE026)


(EQUI4/EU031)

Rail Ethanol Loadout

(EQUI116)


(EQUI60/TK003)


(EQUI61/TK004)


(EQUI62/TK005)4.43 1.08E-02 1.31E-035.09 1.30E-03 4.11E-04

0.0974 2.98E-02 2.98E-02 1.66E-02 4.11E-03 6.57E-062.02

5.51E-04

9.52E-06 9.52E-06 2.10E-097.14E-07 7.14E-07 1.58E-106.35E-06 6.35E-06 1.40E-097.14E-07 7.14E-07 2.00E-05 2.44E-04 1.58E-107.14E-07 7.14E-07 7.14E-05 4.81E-04 1.58E-109.52E-07 9.52E-07 2.64E-05 6.41E-05 2.10E-107.94E-05 7.94E-05 1.75E-087.14E-07 7.14E-07 2.37E-05 3.24E-05 1.58E-108.33E-04 8.33E-04 1.32E-02 4.04E-02 1.84E-07 6.66E+00 3.16E-01 1.62E-02 9.95E-04 9.95E-044.76E-07 4.76E-07 2.65E-06 1.34E-05 1.05E-107.14E-07 7.14E-07 1.40E-06 5.79E-05 1.58E-104.76E-07 4.76E-07 6.90E-06 2.90E-05 1.05E-107.14E-07 7.14E-07 2.19E-06 1.14E-05 1.58E-104.76E-06 4.76E-06 1.05E-094.36E-04 4.36E-04 9.64E-085.55E-04 5.55E-04 1.23E-077.14E-07 7.14E-07 4.98E-06 7.97E-05 1.58E-103.33E-05 3.33E-05 7.36E-094.76E-07 4.76E-07 8.22E-06 1.80E-05 1.05E-104.76E-04 4.76E-04 1.05E-07

1.19E-06 1.19E-06 1.07E-04 2.10E-04 2.63E-101.11E-06 1.11E-06 4.12E-04 6.67E-04 2.45E-107.14E-01 7.14E-01 1.58E-04 6.03E+01 2.87E+00 1.47E-01 9.02E-03 9.02E-037.14E-07 7.14E-07 5.29E-06 2.16E-05 1.58E-101.98E-04 1.98E-04 4.38E-081.51E-04 1.51E-04 3.33E-081.03E-04 1.03E-04 2.28E-082.42E-04 2.42E-04 1.20E-03 6.78E-03 5.34E-088.33E-04 8.33E-04 1.84E-076.75E-06 6.75E-06 4.15E-04 2.13E-03 1.49E-091.98E-06 1.98E-06 6.74E-05 1.93E-04 4.38E-109.52E-06 9.52E-06 2.10E-091.35E-03 1.35E-03 5.77E-03 1.46E-02 2.98E-07 6.24E+00 2.97E-01 1.52E-02 9.33E-04 9.33E-04

4.02E-03 1.01E-022.77E-04 2.77E-04 2.37E-03 1.10E-02 6.12E-08

11.6 0.749 0.749 0.0546 0.0820 1.65E-04 73.2 3.48 1.78E-01 1.09E-02 1.09E-02


Gasoline Tank

(EQUI151)


Boiler Make-Up Air Heater

(EQUI169)VOC Leaks

(FUGI15/FS005)Wetcake - AOS (FUGI15/FS005)

Total (tpy) 1

3.01E-01 2.28E-02 77.02.18E-02 3.42E-03 18.2

1.63E-03 1.48E-02 0.137 15.64.11E-02 2.85E-02 14.4

5.51E-044.60E-03 7.99E-01 0.804


3.89E-03 6.76E-01 4.56E-05 1.02E-02 7.742.61E-08 1.76E-053.91E-08 6.16E-052.61E-08 3.74E-053.91E-08 1.59E-052.61E-07 1.53E-052.39E-05 1.41E-033.04E-05 1.79E-033.91E-08 8.70E-051.83E-06 1.07E-042.61E-08 2.78E-052.61E-05 1.53E-03

8.85E-04 1.54E-01 0.1556.52E-08 3.21E-046.09E-08 1.08E-03

7.79E-03 1.35E+00 3.91E-02 9.23E-02 67.13.91E-08 2.92E-051.09E-05 6.40E-048.26E-06 4.86E-045.65E-06 3.33E-041.33E-05 8.75E-034.56E-05 2.69E-033.70E-07 2.56E-031.09E-07 2.67E-045.22E-07 3.07E-05

7.08E-03 1.23E+00 7.39E-05 9.55E-03 7.832.66E-03 4.61E-01 0.478

1.52E-05 0.01431.95E-02 3.38 0.0410 0.491 0.192 208


Facility-Wide Potential to Emit - HAP Emissions Summary, Limited (tpy)Green Plains Otter Tail, LLCFergus Falls, MN



(STRU24/SV026)

Vent Gas Scrubber


(EQUI55/EU050)




(50 hr/yr) 1

DDGS Dryer Startup AOS - RTO Comb. (50

hr/yr) 2Acetaldehyde 75-07-0 3.68 1.31 1.17Acrolein 107-02-8 0.175 0.027 0.383Formaldehyde 50-00-0 0.088 1.64E-02 0.436 1.65E-04 3.31E-05

Methanol 67-56-1 0.416 1.64E-02 0.1101,3 - Butadiene 106-99-02,2,4 Trimethylpentane 540-84-12-Methylnaphthalene 91-57-6 9.28E-06 1.86E-06 5.29E-08 1.06E-08





Anthracene 120-12-7 9.28E-07 1.86E-07 5.29E-09 1.06E-09

Arsenic 7440-38-2 7.73E-05 1.55E-05 4.41E-07 8.82E-08


Benzene 71-43-2 8.12E-04 1.62E-04 4.63E-06 9.26E-07





Beryllium 7440-41-7 4.64E-06 9.28E-07 2.65E-08 5.29E-09

Cadmium 7440-43-9 4.25E-04 8.50E-05 2.43E-06 4.85E-07

Chromium 7440-47-3 5.41E-04 1.08E-04 3.09E-06 6.18E-07

Chrysene 218-01-9 6.96E-07 1.39E-07 3.97E-09 7.94E-10

Cobalt 7440-48-4 3.25E-05 6.49E-06 1.85E-07 3.71E-08




Fluorene 86-73-7 1.08E-06 2.16E-07 6.18E-09 1.24E-09

Hexane 110-54-3 6.96E-01 1.39E-01 3.97E-03 7.94E-04


Lead 7439-92-1 1.93E-04 3.86E-05 1.10E-06 2.21E-07

Manganese 7439-96-5 1.47E-04 2.94E-05 8.38E-07 1.68E-07

Mercury 7439-97-6 1.00E-04 2.01E-05 5.74E-07 1.15E-07


Nickel 7440-02-0 8.12E-04 1.62E-04 4.63E-06 9.26E-07


Pyrene 129-00-0 1.93E-06 3.86E-07 1.10E-08 2.21E-09

Selenium 7782-49-2 9.28E-06 1.86E-06 5.29E-08 1.06E-08

Toluene 108-88-3 1.31E-03 2.63E-04 7.50E-06 1.50E-06


Total HAPs 4.36 1.37 4.17E-03 8.33E-04


2.94


Hazardous Air PollutantAcetaldehydeAcroleinFormaldehydeMethanol1,3 - Butadiene2,2,4 Trimethylpentane2-Methylnaphthalene3-Methylchloranthrene7,12-Dimethylbenz(a)anthraceneAcenaphtheneAcenaphthyleneAnthraceneArsenicBenz(a)anthraceneBenzeneBenzo(a)pyreneBenzo(b)fluorantheneBenzo(g,h,i)peryleneBenzo(k)fluorantheneBerylliumCadmiumChromiumChryseneCobaltDibenzo(a,h)anthraceneDichlorobenzeneEthylbenzeneFluorantheneFluoreneHexaneIndeno(1,2,3-cd)pyreneLeadManganeseMercuryNaphthaleneNickelPhenanthrenePyreneSeleniumTolueneXylenesTotal Polycyclic Organic Matter (POM)

Total HAPs





(EQUI108/EU026)

Emergency Generator

(EQUI18/EU027)


(TREA21/CE026)


(EQUI4/EU031)

Rail Ethanol

Loadout

(EQUI116)

*Truck loadout

is worst-case


(EQUI60/TK003)0.0253 6.17E-04 7.50E-050.0291 7.45E-05 2.34E-05

5.56E-04 2.98E-02 2.98E-02 9.50E-04 2.35E-04 6.57E-060.0115

3.15E-05

9.52E-06 9.52E-06 2.10E-097.14E-07 7.14E-07 1.58E-106.35E-06 6.35E-06 1.40E-097.14E-07 7.14E-07 1.14E-06 1.39E-05 1.58E-107.14E-07 7.14E-07 4.07E-06 2.75E-05 1.58E-109.52E-07 9.52E-07 1.51E-06 3.66E-06 2.10E-107.94E-05 7.94E-05 1.75E-087.14E-07 7.14E-07 1.35E-06 1.85E-06 1.58E-108.33E-04 8.33E-04 7.51E-04 2.31E-03 1.84E-07 2.18E-01 1.04E-02 1.62E-024.76E-07 4.76E-07 1.51E-07 7.65E-07 1.05E-107.14E-07 7.14E-07 7.98E-08 3.30E-06 1.58E-104.76E-07 4.76E-07 3.94E-07 1.65E-06 1.05E-107.14E-07 7.14E-07 1.25E-07 6.49E-07 1.58E-104.76E-06 4.76E-06 1.05E-094.36E-04 4.36E-04 9.64E-085.55E-04 5.55E-04 1.23E-077.14E-07 7.14E-07 2.84E-07 4.55E-06 1.58E-103.33E-05 3.33E-05 7.36E-094.76E-07 4.76E-07 4.69E-07 1.03E-06 1.05E-104.76E-04 4.76E-04 1.05E-07

1.19E-06 1.19E-06 6.13E-06 1.20E-05 2.63E-101.11E-06 1.11E-06 2.35E-05 3.81E-05 2.45E-107.14E-01 7.14E-01 1.58E-04 1.98E+00 9.39E-02 1.47E-017.14E-07 7.14E-07 3.02E-07 1.23E-06 1.58E-101.98E-04 1.98E-04 4.38E-081.51E-04 1.51E-04 3.33E-081.03E-04 1.03E-04 2.28E-082.42E-04 2.42E-04 6.83E-05 3.87E-04 5.34E-088.33E-04 8.33E-04 1.84E-076.75E-06 6.75E-06 2.37E-05 1.21E-04 1.49E-091.98E-06 1.98E-06 3.85E-06 1.10E-05 4.38E-109.52E-06 9.52E-06 2.10E-091.35E-03 1.35E-03 3.29E-04 8.36E-04 2.98E-07 2.04E-01 9.71E-03 1.52E-02

2.29E-04 5.74E-042.77E-04 2.77E-04 1.35E-04 6.29E-04 6.12E-08

0.0664 0.749 0.749 3.12E-03 4.68E-03 1.65E-04 2.40 0.114 1.78E-01



Hazardous Air PollutantAcetaldehydeAcroleinFormaldehydeMethanol1,3 - Butadiene2,2,4 Trimethylpentane2-Methylnaphthalene3-Methylchloranthrene7,12-Dimethylbenz(a)anthraceneAcenaphtheneAcenaphthyleneAnthraceneArsenicBenz(a)anthraceneBenzeneBenzo(a)pyreneBenzo(b)fluorantheneBenzo(g,h,i)peryleneBenzo(k)fluorantheneBerylliumCadmiumChromiumChryseneCobaltDibenzo(a,h)anthraceneDichlorobenzeneEthylbenzeneFluorantheneFluoreneHexaneIndeno(1,2,3-cd)pyreneLeadManganeseMercuryNaphthaleneNickelPhenanthrenePyreneSeleniumTolueneXylenesTotal Polycyclic Organic Matter (POM)

Total HAPs


(EQUI61/TK004)


(EQUI62/TK005)Gasoline Tank

(EQUI151)


Boiler Make-Up Air Heater

(EQUI169)VOC Leaks

(FUGI15/FS005)Wetcake - AOS (FUGI15/FS005)

Total (tpy) 1

3.01E-01 2.28E-02 6.522.18E-02 3.42E-03 0.640

1.63E-03 1.48E-02 0.137 0.7554.11E-02 2.85E-02 0.623

3.15E-054.60E-03 1.83E-02 0.0229


9.95E-04 9.95E-04 3.89E-03 1.54E-02 4.56E-05 1.02E-02 0.2712.61E-08 2.45E-063.91E-08 5.68E-062.61E-08 3.58E-063.91E-08 3.08E-062.61E-07 1.53E-052.39E-05 1.41E-033.04E-05 1.79E-033.91E-08 7.14E-061.83E-06 1.07E-042.61E-08 3.03E-062.61E-05 1.53E-03

8.85E-04 3.51E-03 4.40E-036.52E-08 2.20E-056.09E-08 6.52E-05

9.02E-03 9.02E-03 7.79E-03 3.09E-02 3.91E-02 9.23E-02 4.573.91E-08 3.84E-061.09E-05 6.40E-048.26E-06 4.86E-045.65E-06 3.33E-041.33E-05 1.24E-034.56E-05 2.69E-033.70E-07 1.67E-041.09E-07 2.13E-055.22E-07 3.07E-05

9.33E-04 9.33E-04 7.08E-03 2.81E-02 7.39E-05 9.55E-03 0.2722.66E-03 1.05E-02 0.0140

1.52E-05 1.66E-031.09E-02 1.09E-02 1.95E-02 7.72E-02 0.041 0.491 0.192 13.8


Facility-Wide Potential to Emit - GHG SummaryGreen Plains Otter Tail, LLCFergus Falls, IA

CO2 CH4 N2O CO2 CH4 N2O Total GHG(tpy) (tpy) (tpy) (tpy CO2e) (tpy CO2e) (tpy CO2e) (tpy CO2e)

SV 001 Grain Receiving with Baghouse - CE 001 -- -- -- -- -- -- --SV 008 Hammermill with Baghouse - CE 008 -- -- -- -- -- -- --SV 011 DDGS Loadout with Baghouse - CE 011 -- -- -- -- -- -- --SV 012 Cooling Tower Cell 1 -- -- -- -- -- -- --SV 013 Cooling Tower Cell 2 -- -- -- -- -- -- --SV 014 Cooling Tower Cell 3 -- -- -- -- -- -- --STRU32/SV020 Fire Pump 131 5.32E-03 5.32E-04 131 0.133 0.159 131.55STRU33/SV022 Boiler 1 56,095 2.68 0.535 56,095 66.9 160 56,321STRU34/SV023 Boiler 2 56,095 2.68 0.535 56,095 66.9 160 56,321STRU35/SV025 Loadout Flare 10.4 1.97E-04 1.97E-05 10.4 4.91E-03 5.86E-03 10.5STRU24/SV026 Fermentation with CO2 Scrubber - CE 027 204,425 -- -- 204,425 -- -- 204,425STRU25/SV027 Distillation (Vent Gas) Scrubber 2,864 -- -- 2,864 -- -- 2,864SV 028 DDGS with Thermal Oxidizer - CE 030 -- -- -- -- -- -- --EQUI 55 DDGS Dryer 46,078 0.867 0.0867 46,078 21.7 25.8 46,126TREA 25 RTO 9,216 0.173 0.0173 9,216 4.34 5.17 9,225STRU36/SV034STRU37/SV035EQUI169 Boiler Make-Up Air Heater 2,593 0.0489 4.89E-03 2,593 1.22 1.46 2,596SV 036 Grain Bin #1 -- -- -- -- -- -- --SV 037 Grain Bin #2 -- -- -- -- -- -- --SV 038 Grain Bin #3 -- -- -- -- -- -- --SV 039 Grain Bin #4 -- -- -- -- -- -- --SV 040 Grain Bin #5 -- -- -- -- -- -- --TK 001 200 Proof Tank -- -- -- -- -- -- --TK 002 200 Proof Tank -- -- -- -- -- -- --TK 003 Denaturant Storage Tank -- -- -- -- -- -- --TK 004 Denatured Ethanol Tank 1 -- -- -- -- -- -- --TK 005 Denatured Ethanol Tank 2 -- -- -- -- -- -- --FS 001 Grain Receiving Fugitives -- -- -- -- -- -- --FS 002 DDGS Loadout Fugitives -- -- -- -- -- -- --FS 003 DDGS Storage Fugitives -- -- -- -- -- -- --FS 004 Truck Traffic -- -- -- -- -- -- --FS 005 Equipment Leaks -- -- -- -- -- -- --FS 006 Wetcake - AOS -- -- -- -- -- -- --FS 007 Temporary Flat Storage -- -- -- -- -- -- --TOTAL 377,993 6.47 1.18 377,993 162 352.28 378,507CO2 = Carbon DioxideCH4 = MethaneN2O = Nitrous OxideGlobal warming potentials for CO2 =1, CH4 = 25, N2O = 298 based on 40 CFR Part 98.

Emission Source Description

Emergency Generator 485 0.0197 1.97E-03 485 0.492 0.586 486

Facility-Wide Potential to Emit - Baghouse Stack Emissions (STRU7/SV001, STRU22/SV008, STRU23/SV011)Green Plains Otter Tail, LLCFergus Falls, MN

DescriptionPM

(lb/hr)PM10

(lb/hr)PM2.5

(lb/hr)Operating

HoursPM

(tpy)PM10

(tpy)PM2.5

(tpy)STRU7/SV001 TREA7/CE001 Grain Receiving with Baghouse 3.17 3.17 3.17 8,760 13.9 13.9 13.9

STRU22/SV008 TREA8/CE008 Hammermill with Baghouse 2.04 2.04 2.04 8,760 8.94 8.94 8.94STRU23/SV011 TRA11/CE011 DDGS Loadout with Baghouse 0.41 0.41 0.41 8,760 1.80 1.80 1.80

PM EF (lb/ton)

PM10 EF (lb/ton)

PM2.5 EF (lb/ton) EF Source PM

(tpy)PM10

(tpy)PM2.5

(tpy)PM

(tpy)PM10

(tpy)PM2.5

(tpy)EQUI20/EU001 Corn Dump Pit/Auger 1 15,000 bu/hr 420 8,760 0.04225 0.01036 0.009565 [1] 77.7 19.1 17.6EQUI21/EU002 Corn Conveyor 1 15,000 bu/hr 420 8,760 0.061 0.034 0.0058 [2] 112 62.5 10.7EQUI22/EU003 Corn Elevator 1 15,000 bu/hr 420 8,760 0.061 0.034 0.0058 [2] 112 62.5 10.7EQUI23/EU004 Corn Dump Pit/Auger 2 15,000 bu/hr 420 8,760 0.04225 0.01036 0.009565 [1] 77.7 19.1 17.6EQUI24/EU005 Corn Conveyor 2 15,000 bu/hr 420 8,760 0.061 0.034 0.0058 [2] 112 62.5 10.7EQUI25/EU006 Corn Elevator 2 15,000 bu/hr 420 8,760 0.061 0.034 0.0058 [2] 112 62.5 10.7EQUI26/EU007 Transfer Conveyor 15,000 bu/hr 420 8,760 0.061 0.034 0.0058 [2] 112 62.5 10.7EQUI6/EU056 Silo #3 Conveyor 15,000 bu/hr 420 8,760 0.061 0.034 0.0058 [2] 112 62.5 10.7EQUI11/EU061 Silo #4 Conveyor 15,000 bu/hr 420 8,760 0.061 0.034 0.0058 [2] 112 62.5 10.7EQUI14/EU064 Silo #5 Conveyor 15,000 bu/hr 420 8,760 0.061 0.034 0.0058 [2] 112 62.5 10.7

EQUI166/EU057 Silo #3 Reclaim 6,000 bu/hr 168 8,760 0.061 0.034 0.0058 [2] 44.9 25.0 4.27EQUI167/EU062 Silo #4 Reclaim 6,000 bu/hr 168 8,760 0.061 0.034 0.0058 [2] 44.9 25.0 4.27EQUI168/EU065 Silo #5 Reclaim 6,000 bu/hr 168 8,760 0.061 0.034 0.0058 [2] 44.9 25.0 4.27EQUI114/EU009 Silo #1 and #2 Reclaim 2,800 bu/hr 78 8,760 0.061 0.034 0.0058 [2] 20.9 11.7 1.99

EQUI115 Corn Elevator 3 7,500 bu/hr 210 8,760 0.061 0.034 0.0058 [2] 56.1 31.3 5.33EQUI27/EU008 Scalper 15,000 bu/hr 420 8,760 0.061 0.034 0.0058 [2] 112 62.5 10.7EQUI1/EU010 Grinder Surge Bin 15,000 bu/hr 420 8,760 0.025 0.0063 0.0011 [3] 46.0 11.6 2.02EQUI29/EU011 Hammermill 1 1,124 bu/hr 31.5 8,760 0.061 0.034 0.0058 [2] 8.41 4.69 0.800EQUI30/EU012 Hammermill 2 1,124 bu/hr 31.5 8,760 0.061 0.034 0.0058 [2] 8.41 4.69 0.800EQUI57/EU055 Hammermill 3 1,124 bu/hr 31.5 8,760 0.061 0.034 0.0058 [2] 8.41 4.69 0.800

EQUI119 Hammermill Conveyor 1 6,000 bu/hr 192 8,760 0.061 0.034 0.0058 [2] 51.3 28.6 4.88EQUI120 Hammermill Conveyor 2 6,000 bu/hr 192 8,760 0.061 0.034 0.0058 [2] 51.3 28.6 4.88EQUI121 Hammermill Conveyor 3 6,000 bu/hr 192 8,760 0.061 0.034 0.0058 [2] 51.3 28.6 4.88EQUI122 Flour Conveyor 1 6,000 bu/hr 192 8,760 0.061 0.034 0.0058 [2] 51.3 28.6 4.88EQUI123 Flour Conveyor 2 6,000 bu/hr 192 8,760 0.061 0.034 0.0058 [2] 51.3 28.6 4.88EQUI124 Flour Conveyor 3 6,000 bu/hr 192 8,760 0.061 0.034 0.0058 [2] 51.3 28.6 4.88EQUI125 Screw Conveyor, Recycle Solids 1,000 bu/hr 32 8,760 0.061 0.034 0.0058 [2] 8.55 4.77 0.813EQUI126 Flour Elevator 6,000 bu/hr 192 8,760 0.061 0.034 0.0058 [2] 51.3 28.6 4.88

EQUI31/EU013 DDGS Storage Reclaim 180 ton/hr 180 8,760 0.0033 0.0008 0.0008 [4] 2.60 0.631 0.631EQUI32/EU014 Bulkweigher 180 ton/hr 180 8,760 0.0033 0.0008 0.0008 [4] 2.60 0.631 0.631EQUI33/EU015 DDGS Conveyor 180 ton/hr 180 8,760 0.0033 0.0008 0.0008 [4] 2.60 0.631 0.631EQUI34/EU016 DDGS Load Spout 180 ton/hr 180 8,760 0.0033 0.0008 0.0008 [4] 2.60 0.631 0.631

EQUI136 DDGS Storage Reclaim Conveyor 15,000 bu/hr 173 8,760 0.0033 0.0008 0.0008 [4] 2.49 0.604 0.604EQUI137 DDGS Reclaim Elevator 15,000 bu/hr 173 8,760 0.0033 0.0008 0.0008 [4] 2.49 0.604 0.604

[1] AP-42 Ch 9.9, Table 9.9.1-1. assumes 95% Grain Receiving Hopper Truck (SCC 3-02-005-52) and 5% Straight Truck (SCC 3-02-005-51)[2] AP-42 Ch 9.9, Table 9.9.1-1. Headhouse and grain handling (SCC 3-02-005-30) (legs, conveyors, enclosed belts, distributor, scale, enclosed cleaners,etc.).[3] AP-42 Ch 9.9, Table 9.9.1-1. Storage Bin Vents (SCC 3-02-005-40).[4] AP-42 Ch 9.9, Table 9.9.1-2. Feed Shipping (SCC 3-02-008-03) Assume PM2.5 = PM10.

Controlled Permit Limitations Potential Emissions

Potential Unrestricted Emissions (based on AP-42 Emission Factors)Process

Weight Rate (ton/hr)

Operating Hours

EmissionUnit DescriptionStack Vent Process

Weight Rate

Process Weight Rate

Units

STRU7/SV001

Stack Vent

STRU23/SV011

ControlEquipment

STRU22/SV008

15.4 3.73 3.73

763 411 70.2

Potential Unrestricted Emissions by Stack

1053 538 121

EC-3A - Facility-Wide Potential to Emit - Grain Handling Uncaptured Emissions (EQUI 117, EQUI 118, EQUI 138)Green Plains Otter Tail, LLCFergus Falls, MN

Uncaptured Grain Handling Emissions - Emission Factors from AP-42, Table 9.9.1-1 and 9.9.1-2, 5/03, 5th Edition.Annual Uncaptured PM Uncaptured PM10 Uncaptured PM2.5

Throughput AP-42 Factor Capture Emissions AP-42 Factor Capture Emissions AP-42 Factor Capture Emissions(ton/yr) (lb/ton) Efficiency (tpy) (lb/ton) Efficiency (tpy) (lb/ton) Efficiency (tpy)

EQUI 117 Grain Receiving - Hopper Truck1 339,552 7.17 1.76 0.295EQUI 117 Hopper Truck 95% 322,574 0.04 5.65 7.80E-03 1.26 1.30E-03 0.210EQUI 117 Straight Truck 5% 16,978 0.18 1.53 0.06 0.50 0.01 0.0849

EQUI 118 Grain Receiving - Hopper Truck1 339,552 7.17 1.76 0.295EQUI 118 Hopper Truck 95% 322,574 0.04 5.65 7.80E-03 1.26 1.30E-03 0.210EQUI 118 Straight Truck 5% 16,978 0.18 1.53 0.06 0.50 0.01 0.0849

EQUI 138 DDGS Loading - Truck1 212,220 3.30E-03 0% 0.350 8.00E-04 0% 0.0849 8.00E-04 0% 0.0849EQUI 129 DDGS Storage Conveyor 1 212,220 3.30E-03 0% 0.350 8.00E-04 0% 0.0849 8.00E-04 0% 0.0849EQUI 130 DDGS Storage Conveyor 2 212,220 3.30E-03 0% 0.350 8.00E-04 0% 0.0849 8.00E-04 0% 0.0849EQUI 131 DDGS Storage Elevator 212,220 3.30E-03 0% 0.350 8.00E-04 0% 0.0849 8.00E-04 0% 0.0849EQUI 132 DDGS Storage Conveyor 3 212,220 3.30E-03 0% 0.350 8.00E-04 0% 0.0849 8.00E-04 0% 0.0849EQUI 133 DDGS Storage Conveyor 4 212,220 3.30E-03 0% 0.350 8.00E-04 0% 0.0849 8.00E-04 0% 0.0849EQUI 134 DDGS Reclaim via Front End Loader 212,220 3.30E-03 0% 0.350 8.00E-04 0% 0.0849 8.00E-04 0% 0.0849EQUI 135 DDGS Reclaim Pit 212,220 3.30E-03 0% 0.350 8.00E-04 0% 0.0849 8.00E-04 0% 0.08491 - Assumes all grain received by truck. Assumes all DDGS shipped by truck.2 - Assumes all DDGS produced is stored.

0% 0%

3 - Includes four material transfer activities (conveyor drops) occurring in the sealed conveying system prior to the storage building but emitted in the storage building and three materal transfer/handling activities occurring in the storage building.

0% 0%

% of TrucksDescriptionEmission

Unit

0%

0%

Grain Receiving, DDGS Production and DDGS Loadout ParametersVariable Value Unit

290 count12 hours25 tons/truck56 lb/bu30 ton/hr

180 ton/hr

Grain Receiving Maximum Hourly Emissions Calculation Using Maximum Daily Receiving TrucksUncaptured PM Uncaptured PM10 Uncaptured PM2.5

AP-42 Factor(lb/ton)

Capture Efficiency

Max Limited Emission

Rate(lb/hr)


Capture Efficiency


Rate(lb/hr)


Capture Efficiency


Rate(lb/hr)

EQUI 117 Grain Receiving - Truck1 302 12.8 3.13 0.524EQUI 117 Hopper Truck 95% 287 0.04 10.0 7.80E-03 2.24 1.30E-03 0.373EQUI 117 Straight Truck 5% 15.1 0.18 2.72 0.06 0.891 0.01 0.151

EQUI 118 Grain Receiving - Truck1 302 12.8 3.13 0.524EQUI 118 Hopper Truck 95% 287 0.04 10.0 7.80E-03 2.24 1.30E-03 0.373EQUI 118 Straight Truck 5% 15.1 0.18 2.72 0.06 0.891 0.01 0.151

EQUI 138 DDGS Loading - Truck 180 3.30E-03 0% 0.594 8.00E-04 0% 0.144 8.00E-04 0% 0.144EQUI 129 DDGS Storage Conveyor 1 30 3.30E-03 0% 0.0990 8.00E-04 0% 0.0240 8.00E-04 0% 0.0240EQUI 130 DDGS Storage Conveyor 2 30 3.30E-03 0% 0.0990 8.00E-04 0% 0.0240 8.00E-04 0% 0.0240EQUI 131 DDGS Storage Elevator 30 3.30E-03 0% 0.0990 8.00E-04 0% 0.0240 8.00E-04 0% 0.0240EQUI 132 DDGS Storage Conveyor 3 30 3.30E-03 0% 0.0990 8.00E-04 0% 0.0240 8.00E-04 0% 0.0240EQUI 133 DDGS Storage Conveyor 4 30 3.30E-03 0% 0.0990 8.00E-04 0% 0.0240 8.00E-04 0% 0.0240EQUI 134 DDGS Reclaim via Front End Loader 180 3.30E-03 0% 0.594 8.00E-04 0% 0.144 8.00E-04 0% 0.144EQUI 135 DDGS Reclaim Pit 180 3.30E-03 0% 0.594 8.00E-04 0% 0.144 8.00E-04 0% 0.1441 - Indoor grain receiving is limited at COMG 6 to 7,250 ton/day, 7 AM to 7 PM (averages to 604 ton/hr, or 302 ton/hr per receiving pit)

Maximum Daily Receiving Trucks

Truck LoadReceiving Hours per Day

Grain DensityMaximum DDGS Production RateMaximum DDGS Loading Rate

Emission Unit Description % of Trucks

Maximum Hourly Rate

(ton/hr)

0% 0% 0%

0% 0% 0%

Facility-Wide Potential to Emit - Cooling Tower (FUGI 7, FUGI 8, FUGI 9)Green Plains Otter Tail, LLCFergus Falls, MN

FUGI 7 FUGI 8Cooling Tower Cell #1 Cooling Tower Cell #2

0.834 0.8340.502 0.502

1.76E-03 1.76E-03

3.65 3.652.20 2.20

7.71E-03 7.71E-03

Percent of PM Emission Rate1 (lb/hr)100 2.5060.2 1.510.211 5.28E-03

1 - Emission Rate of PM is based on the following equation:

TDS Total Dissolved Solids 2,500 ppm or mg/LQCirc Circulating Water Flow Rate 40,000 gpmQdrift Total Drift: 0.005 %

2 - Percent of PM is based on the following equation and table:

CTDS Concentration of TDS 0.0025 ppm x 10-6

ρw Density of Drift Droplet 1 g/cm3

ρsalt Density of Particle 2.5 g/cm3

10.0 1.0 020.0 2.0 0.19630.0 3.0 0.22640.0 4.0 0.51450.0 5.0 1.81660.0 6.0 5.70270.0 7.0 21.34890.0 9.0 49.812110.0 11.0 70.509130.0 13.0 82.023150.0 15.0 88.012180.0 18.0 91.032210.0 21.0 92.468240.0 24.0 94.091270.0 27.0 94.689300.0 30.0 96.288350.0 35.0 97.011400.0 40.0 98.34450.0 45.0 99.071500.0 50.0 99.071600.0 60.0 100

0.834

PM10

PM

PM2.5

PM10

1.76E-030.502

Drift Droplet Diameter (dd)(microns)

Particle Size/Diameter (dp)(microns) % mass

PM2.52

PM102

2.31E-026.60

Pollutant

PM1Pollutant

2 - Calculations are determined for the cooling tower as a whole and divided among the three cells equally.

1 - Emissions are calculated using the approach detailed in the September 9, 2013 Technical Memorandum from the New Mexico Environment Air Quality Bureau.

7.71E-03PM2.5

11.0Potential Emissions (tpy)

Emission Rate (lb/hr)

Emission Rate (tpy)3.652.20

Cooling Tower Cell #3FUGI 9

PM

𝑃𝑀𝑙𝑏

ℎ𝑟= 𝑇𝐷𝑆

𝑚𝑔

𝐿∗

1 𝑙𝑏

453,600 𝑚𝑔∗3.785 𝐿

𝑔𝑎𝑙∗ 𝑄𝑐𝑖𝑟𝑐 𝑔𝑝𝑚 ∗

𝑄𝑑𝑟𝑖𝑓𝑡(%)

100∗60 𝑚𝑖𝑛

ℎ𝑟

𝑑𝑝 =𝑑𝑑

𝜌𝑠𝑎𝑙𝑡𝜌𝑤 ∗ 𝐶𝑇𝐷𝑆

13

Facility-Wide Potential to Emit - Fire Pump Engine (EQUI108/EU026, STRU32/SV020)Green Plains Otter Tail, LLCFergus Falls, MN

Internal Combustion of Diesel Fuel in Engines (<600 hp)Engine Horsepower 460 hpBrake-specific Fuel Consumption 7,000 Btu/hpOperating Hours 500 hours

PollutantEmission Factor1

(g/hp-hr)Emission Factor2,3

(lb/MMBtu)Emission

Rate (lb/hr)Unrestricted

PTE (tpy)Operating

Hours4

Limited Potential Emissions

(tpy)NOx 5.11 5.18 22.7 500 1.30CO 0.47 0.477 2.09 500 0.119SOx 1.28E-03 1.29E-03 5.67E-03 500 3.24E-04PM 0.07 0.0710 0.311 500 0.0177PM10 0.07 0.0710 0.311 500 0.0177PM2.5 0.07 0.0710 0.311 500 0.0177VOC 0.09 0.0913 0.400 500 0.0228CO2 163.05 525 2300 500 131CH4 6.61E-03 0.0213 0.0933 500 5.32E-03N2O 6.61E-04 2.13E-03 9.33E-03 500 5.32E-04

Benzene 9.33E-04 3.00E-03 1.32E-02 500 7.51E-04Toluene 4.09E-04 1.32E-03 5.77E-03 500 3.29E-04Xylenes 2.85E-04 9.18E-04 4.02E-03 500 2.29E-041,3 - Butadiene 3.91E-05 1.26E-04 5.51E-04 500 3.15E-05Formaldehyde 1.18E-03 3.80E-03 1.66E-02 500 9.50E-04Acetaldehyde 7.67E-04 2.47E-03 1.08E-02 500 6.17E-04Acrolein 9.25E-05 2.98E-04 1.30E-03 500 7.45E-05Naphthalene 8.48E-05 2.73E-04 1.20E-03 500 6.83E-05 POMAcenaphthylene 5.06E-06 1.63E-05 7.14E-05 500 4.07E-06 POMAcenaphthene 1.42E-06 4.57E-06 2.00E-05 500 1.14E-06 POMFluorene 2.92E-05 9.40E-05 4.12E-04 500 2.35E-05 POMPhenanthrene 2.94E-05 9.47E-05 4.15E-04 500 2.37E-05 POMAnthracene 1.87E-06 6.02E-06 2.64E-05 500 1.51E-06 POMFluoranthene 7.61E-06 2.45E-05 1.07E-04 500 6.13E-06 POMPyrene 4.78E-06 1.54E-05 6.74E-05 500 3.85E-06 POMBenz(a)anthracene 1.68E-06 5.41E-06 2.37E-05 500 1.35E-06 POMChrysene 3.53E-07 1.14E-06 4.98E-06 500 2.84E-07 POMBenzo(b)fluoranthene 9.91E-08 3.19E-07 1.40E-06 500 7.98E-08 POMBenzo(k)fluoranthene 1.55E-07 4.99E-07 2.19E-06 500 1.25E-07 POMBenzo(a)pyrene 1.88E-07 6.05E-07 2.65E-06 500 1.51E-07 POMIndeno(1,2,3-cd)pyrene 3.75E-07 1.21E-06 5.29E-06 500 3.02E-07 POMDibenzo(a,h)anthracene 5.83E-07 1.88E-06 8.22E-06 500 4.69E-07 POMBenzo(g,h,i)perylene 4.89E-07 1.57E-06 6.90E-06 500 3.94E-07 POMTotal Polycyclic Organic Matter (POM) 5.41E-04 2.37E-03 1.35E-04Total HAPs 0.0125 0.0546 3.12E-031 - Criteria Pollutant emission factors from manufacturer, CLARKE fire protection products 3133 East Kemper Road, Cincinnati, OH 45241.2 - HAP emission factors from AP-42 Chapter 3.3 Gasoline and Diesel Engines (up to 600 HP) Table 3.3-2 .3 - CO2, N2O, & CH4 emission factors from 40 CFR Part 98 Tables C-1 and C-2.4 - PTE calculated assuming 500 operating hours per year (1995 EPA Emergency Generator Memo)

Facility-Wide Potential to Emit - Boiler #1 (EQUI35/EU028, STRU33/SV022) Page 1 / 2Green Plains Otter Tail, LLCFergus Falls, MN

Boiler #1 Heat Input Capacity: 92.4 MMBtu/hrOperating Hours: 8,760

Propane Sulfur Content: 0.54 gr/100ft3

Emissions Summary - Criteria Pollutants

PollutantNG Emission

Factor2 (lb/MMscf)NG Emission

Factor3 (lb/MMBtu)NG Potential

Emissions (lb/hr) Operating HoursNG Potential

Emissions (tpy)PM 7.6 0.01 0.688 8,760 3.02PM10 7.6 0.01 0.688 8,760 3.02PM2.5 7.6 0.01 0.688 8,760 3.02CO 46 0.045 4.16 8,760 18.2NOx 51 0.05 4.62 8,760 20.2SO2 0.6 5.88E-04 5.44E-02 8,760 0.238VOC 5.5 0.01 0.498 8,760 2.18

PollutantPropane Emission Factor4 (lb/Mgal)

Propane Emission Factor5 (lb/MMBtu)

Propane Potential Emissions (lb/hr) Operating Hours

Propane Potential Emissions (tpy)

PM 0.70 0.01 0.707 8,760 3.10PM10 0.70 0.01 0.707 8,760 3.10PM2.5 0.70 0.01 0.707 8,760 3.10CO 7.5 0.08 7.57 8,760 33.2NOx 13 0.14 13.1 8,760 57.5SO2 0.054 5.90E-04 5.45E-02 8,760 0.239VOC 1.00 0.0109 1.01 8,760 4.42

Pollutant

Uncontrolled Potential Emissions

(lb/hr)6 Worst Case FuelControlled Permit Limitation7 (lbs/hr) Operating Hours

Limited Potential Emissions (tpy)

PM 0.707 Propane -- 8,760 3.10PM10 0.707 Propane -- 8,760 3.10PM2.5 0.707 Propane -- 8,760 3.10CO 7.57 Propane -- 8,760 33.2NOx 13.1 Propane -- 8,760 57.5SO2 5.45E-02 Propane -- 8,760 0.239VOC 1.01 Propane -- 8,760 4.421 - Propane will be used as back-up fuel only in the case of an emergency where the facility needs to provide heat to prevent facility freeze-up.

2 - Emission factors for natural gas combustion are from Tables 1.4-2, 1.4-3 and 1.4-4 of AP-42 except for NOx and CO which are vendor guarantees.

3 - Emission factors were converted from lb/MMscf to lb/MMBtu using a higher heating value of 1,020 Btu/scf (per footnote "a" of Table 1.4-1).

6 - Uncontrolled emissions are based on the worst-case emissions between Natural Gas and Propane.7 - Controlled emissions are based on current and proposed permitted hourly emission limits and maximum firing rates at 8,760 hours per year.

4 - Emission factors for propane are from Tables 1.5-1 of AP-42.5 - Emission factors were converted from lb/Mgal to lb/MMBtu using an assumed higher heating value of 91.5 MMBtu/Mgal (per footnote "a" of Table 1.5-1). VOC is assumed equal to TOC.


Emissions Summary - GHG


Factor1 (lb/MMBtu)Operating Hours NG Emission Rate

(lb/hr)NG Potential

Emissions (tpy)CO2 116.98 8,760 10,809 47,342CH4 2.20E-03 8,760 0.204 0.892N2O 2.20E-04 8,760 0.0204 0.0892

PollutantPropane Emission Factor1 (lb/MMBtu)

Operating Hours Propane Emission Rate (lb/hr)


CO2 138.60 8,760 12,807 56,095CH4 6.61E-03 8,760 0.611 2.68N2O 1.32E-03 8,760 0.122 0.535

PollutantEmission Rate

(lb/hr)2 Worst Case Fuel Operating Hours Limited Potential Emissions (tpy)

CO2 12,807 Propane 8,760 56,095CH4 0.61 Propane 8,760 2.68N2O 0.12 Propane 8,760 0.535Total GHG Mass Emissions 56,098Total GHG CO2e Emissions2 56,3211 - GHG Emission Factors are from 40 CFR 98 Subpart C Tables C-1 and C-2.2 - Uncontrolled emissions are based on the worst-case emissions between Natural Gas and Propane.

Combustion EmissionsTotal Heat Input Capacity: 92.40 MMBtu/hr


(lb/MMscf)Emission Factor2

(lb/MMBtu) Operating HoursEmission Rate

(lb/hr)Potential Emissions

(tpy)Ammonia -- 3.14E-03 8,760 0.290 1.272-Methylnaphthalene 2.40E-05 2.35E-08 8,760 2.17E-06 9.52E-06 POM3-Methylchloranthrene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POM7,12-Dimethylbenz(a)anthracene 1.60E-05 1.57E-08 8,760 1.45E-06 6.35E-06 POMAcenaphthene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMAcenaphthylene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMAnthracene 2.40E-06 2.35E-09 8,760 2.17E-07 9.52E-07 POMArsenic 2.00E-04 1.96E-07 8,760 1.81E-05 7.94E-05Benz(a)anthracene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMBenzene 2.10E-03 2.06E-06 8,760 1.90E-04 8.33E-04Benzo(a)pyrene 1.20E-06 1.18E-09 8,760 1.09E-07 4.76E-07 POMBenzo(b)fluoranthene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMBenzo(g,h,i)perylene 1.20E-06 1.18E-09 8,760 1.09E-07 4.76E-07 POMBenzo(k)fluoranthene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMBeryllium 1.20E-05 1.18E-08 8,760 1.09E-06 4.76E-06Cadmium 1.10E-03 1.08E-06 8,760 9.96E-05 4.36E-04Chromium 1.40E-03 1.37E-06 8,760 1.27E-04 5.55E-04Chrysene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMCobalt 8.40E-05 8.24E-08 8,760 7.61E-06 3.33E-05Dibenzo(a,h)anthracene 1.20E-06 1.18E-09 8,760 1.09E-07 4.76E-07 POMDichlorobenzene 1.20E-03 1.18E-06 8,760 1.09E-04 4.76E-04Fluoranthene 3.00E-06 2.94E-09 8,760 2.72E-07 1.19E-06 POMFluorene 2.80E-06 2.75E-09 8,760 2.54E-07 1.11E-06 POMFormaldehyde 7.50E-02 7.35E-05 8,760 6.79E-03 2.98E-02Hexane 1.80 1.76E-03 8,760 0.163 0.714Indeno(1,2,3-cd)pyrene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMLead 5.00E-04 4.90E-07 8,760 4.53E-05 1.98E-04Manganese 3.80E-04 3.73E-07 8,760 3.44E-05 1.51E-04Mercury 2.60E-04 2.55E-07 8,760 2.36E-05 1.03E-04Naphthalene 6.10E-04 5.98E-07 8,760 5.53E-05 2.42E-04 POMNickel 2.10E-03 2.06E-06 8,760 1.90E-04 8.33E-04Phenanthrene 1.70E-05 1.67E-08 8,760 1.54E-06 6.75E-06 POMPyrene 5.00E-06 4.90E-09 8,760 4.53E-07 1.98E-06 POMSelenium 2.40E-05 2.35E-08 8,760 2.17E-06 9.52E-06Toluene 3.40E-03 3.33E-06 8,760 3.08E-04 1.35E-03Total Polycyclic Organic Matter (POM) 6.32E-05 2.77E-04Total HAPs 0.171 0.749

2 - Emission factors were converted from lb/MMscf to lb/MMBtu using a higher heating value of 1,020 Btu/scf (per footnote "a" of Table 1.4-1). 1 - Emission factors for natural gas combustion are from Tables 1.4-1, 1.4-2, 1.4-3 and 1.4-4 of AP-42.


Boiler #1 Heat Input Capacity: 92.4 MMBtu/hrOperating Hours: 8,760

Propane Sulfur Content: 0.54 gr/100ft3



Factor2 (lb/MMscf)NG Emission

Factor3 (lb/MMBtu)NG Potential

Emissions (lb/hr) Operating HoursNG Potential

Emissions (tpy)PM 7.6 0.01 0.688 8,760 3.02PM10 7.6 0.01 0.688 8,760 3.02PM2.5 7.6 0.01 0.688 8,760 3.02CO 46 0.045 4.16 8,760 18.2NOx 51 0.05 4.62 8,760 20.2SO2 0.6 5.88E-04 5.44E-02 8,760 0.238VOC 5.5 0.01 0.498 8,760 2.18

PollutantPropane Emission Factor4 (lb/Mgal)

Propane Emission Factor5 (lb/MMBtu)

Propane Potential Emissions (lb/hr) Operating Hours


PM 0.70 0.01 0.707 8,760 3.10PM10 0.70 0.01 0.707 8,760 3.10PM2.5 0.70 0.01 0.707 8,760 3.10CO 7.5 0.08 7.57 8,760 33.2NOx 13 0.14 13.1 8,760 57.5SO2 0.054 5.90E-04 5.45E-02 8,760 0.239VOC 1.00 0.0109 1.01 8,760 4.42

Pollutant

Uncontrolled Potential Emissions

(lb/hr)6 Worst Case FuelControlled Permit Limitation7 (lbs/hr) Operating Hours

Limited Potential Emissions (tpy)

PM 0.707 Propane -- 8,760 3.10PM10 0.707 Propane -- 8,760 3.10PM2.5 0.707 Propane -- 8,760 3.10CO 7.57 Propane -- 8,760 33.2NOx 13.1 Propane -- 8,760 57.5SO2 5.45E-02 Propane -- 8,760 0.239VOC 1.01 Propane -- 8,760 4.42

7 - Controlled emissions are based on current and proposed permitted hourly emission limits and maximum firing rates at 8,760 hours per year.

1 - Propane will be used as back-up fuel only in the case of an emergency where the facility needs to provide heat to prevent facility freeze-up.


3 - Emission factors were converted from lb/MMscf to lb/MMBtu using a higher heating value of 1,020 Btu/scf (per footnote "a" of Table 1.4-1). 4 - Emission factors for propane are from Tables 1.5-1 of AP-42.

6 - Uncontrolled emissions are based on the worst-case emissions between Natural Gas and Propane.

5 - Emission factors were converted from lb/Mgal to lb/MMBtu using an assumed higher heating value of 91.5 MMBtu/Mgal (per footnote "a" of Table 1.5-1). VOC is assumed equal to TOC.


Emissions Summary - GHG


Factor1 (lb/MMBtu)Operating Hours NG Emission Rate

(lb/hr)NG Potential

Emissions (tpy)CO2 116.98 8,760 10,809 47,342CH4 2.20E-03 8,760 0.204 0.892N2O 2.20E-04 8,760 0.0204 0.0892

PollutantPropane Emission Factor1 (lb/MMBtu)

Operating Hours Propane Emission Rate (lb/hr)


CO2 138.60 8,760 12,807 56,095CH4 0.01 8,760 0.611 2.68N2O 1.32E-03 8,760 0.122 0.535

PollutantEmission Rate

(lb/hr)2 Worst Case Fuel Operating Hours Limited Potential Emissions (tpy)

CO2 12,807 Propane 8,760 56,095CH4 0.61 Propane 8,760 2.68N2O 0.12 Propane 8,760 0.535Total GHG Mass Emissions 56,098Total GHG CO2e Emissions2 56,3211 - GHG Emission Factors are from 40 CFR 98 Subpart C Tables C-1 and C-2.2 - Uncontrolled emissions are based on the worst-case emissions between Natural Gas and Propane.

Combustion EmissionsTotal Heat Input Capacity: 92.40 MMBtu/hr




(lb/hr)Potential Emissions

(tpy)Ammonia -- 3.14E-03 8,760 0.290 1.272-Methylnaphthalene 2.40E-05 2.35E-08 8,760 2.17E-06 9.52E-06 POM3-Methylchloranthrene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POM7,12-Dimethylbenz(a)anthracene 1.60E-05 1.57E-08 8,760 1.45E-06 6.35E-06 POMAcenaphthene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMAcenaphthylene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMAnthracene 2.40E-06 2.35E-09 8,760 2.17E-07 9.52E-07 POMArsenic 2.00E-04 1.96E-07 8,760 1.81E-05 7.94E-05Benz(a)anthracene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMBenzene 2.10E-03 2.06E-06 8,760 1.90E-04 8.33E-04Benzo(a)pyrene 1.20E-06 1.18E-09 8,760 1.09E-07 4.76E-07 POMBenzo(b)fluoranthene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMBenzo(g,h,i)perylene 1.20E-06 1.18E-09 8,760 1.09E-07 4.76E-07 POMBenzo(k)fluoranthene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMBeryllium 1.20E-05 1.18E-08 8,760 1.09E-06 4.76E-06Cadmium 1.10E-03 1.08E-06 8,760 9.96E-05 4.36E-04Chromium 1.40E-03 1.37E-06 8,760 1.27E-04 5.55E-04Chrysene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMCobalt 8.40E-05 8.24E-08 8,760 7.61E-06 3.33E-05Dibenzo(a,h)anthracene 1.20E-06 1.18E-09 8,760 1.09E-07 4.76E-07 POMDichlorobenzene 1.20E-03 1.18E-06 8,760 1.09E-04 4.76E-04Fluoranthene 3.00E-06 2.94E-09 8,760 2.72E-07 1.19E-06 POMFluorene 2.80E-06 2.75E-09 8,760 2.54E-07 1.11E-06 POMFormaldehyde 7.50E-02 7.35E-05 8,760 6.79E-03 2.98E-02Hexane 1.80 1.76E-03 8,760 0.163 0.714Indeno(1,2,3-cd)pyrene 1.80E-06 1.76E-09 8,760 1.63E-07 7.14E-07 POMLead 5.00E-04 4.90E-07 8,760 4.53E-05 1.98E-04Manganese 3.80E-04 3.73E-07 8,760 3.44E-05 1.51E-04Mercury 2.60E-04 2.55E-07 8,760 2.36E-05 1.03E-04Naphthalene 6.10E-04 5.98E-07 8,760 5.53E-05 2.42E-04 POMNickel 2.10E-03 2.06E-06 8,760 1.90E-04 8.33E-04Phenanthrene 1.70E-05 1.67E-08 8,760 1.54E-06 6.75E-06 POMPyrene 5.00E-06 4.90E-09 8,760 4.53E-07 1.98E-06 POMSelenium 2.40E-05 2.35E-08 8,760 2.17E-06 9.52E-06Toluene 3.40E-03 3.33E-06 8,760 3.08E-04 1.35E-03Total Polycyclic Organic Matter (POM) 6.32E-05 2.77E-04Total HAPs 0.171 0.7491 - Emission factors for natural gas combustion are from Tables 1.4-1, 1.4-2, 1.4-3 and 1.4-4 of AP-42.2 - Emission factors were converted from lb/MMscf to lb/MMBtu using a higher heating value of 1,020 Btu/scf (per footnote "a" of Table 1.4-1).

Facility-Wide Potential to Emit - Ethanol Loadout (EQUI4/EU031, EQUI116, STRU35/SV025)Green Plains Otter Tail, LLCFergus Falls, MN

Truck Loading

Where:S = Saturation factor from Table 5.2-1: 1 dimensionlessP = True vapor pressure of liquid loaded: 3.8 psiaM = Molecular weight of vapors: 66 lb/lb-moleT = Temperature of bulk liquid loaded: 500.63 °RLL = Loading loss for liquid loaded: 6.2421 lb-VOC/1,000-gal

Maximum denatured ethanol loadout rates.Maximum pump rate: 903 gallons/minute

54,180 gallons/hour

Rail Loading

Where:S = Saturation factor from Table 5.2-1: 0.6 dimensionlessP = True vapor pressure of liquid loaded: 0.3890 psiaM = Molecular weight of vapors: 51.06 lb/lb-moleT = Temperature of bulk liquid loaded: 500.63 °RLL = Loading loss for liquid loaded: 0.2966 lb-VOC/1,000-gal

Maximum denatured ethanol loadout rates.Maximum pump rate: 1,000 gal/min

60,000 gal/hr

Loading Vehicle Units Truck Rail Worst-CaseSubject Item ID EQUI 4 EQUI 116% of Product Loaded % 100% 100%Volume Loaded gal 66,659,830 66,659,830Max. Loading Rate gal/hr 54,180 60,000Loading Loss lb-VOC/1000-gal 6.24 0.30

lb/hr 338 17.8 338tpy 208 9.89 208

lb/hr 10.8 0.569 10.8tpy 6.66 0.316 6.66

lb/hr 98.1 5.16 98.1tpy 60.3 2.87 60.3

lb/hr 10.1 0.534 10.1tpy 6.24 0.297 6.24

lb/hr 119 6.26 119tpy 73.2 3.48 73.2

Capture Efficiency1 % 98.7% 98.7%Flare Control Efficiency % 98% 98%Overall Control Efficiency % 96.7% 96.7%

lb/hr 11.1 0.583 11.1tpy 6.81 0.324 6.81

lb/hr 0.354 0.0186 0.354tpy 0.218 0.0104 0.218

lb/hr 3.21 0.169 3.21tpy 1.98 0.0939 1.98

lb/hr 0.332 0.0175 0.332tpy 0.204 9.71E-03 0.204

lb/hr 3.90 0.205 3.90tpy 2.40 0.114 2.40

2 HAPs emissions calculated as a fraction of VOC as determined from the TANKS output for the denaturant tank.

Uncontrolled Benzene (3.2%)

Uncontrolled Hexane (29%)

Uncontrolled Toluene (3%)

Uncontrolled Total HAPs

1 Capture efficiency of 98.7% assumed for tanker trucks passing the NSPS-level annual test (AP-42 Section 5.2, pg. 5.2-6). The same capture efficiency has been assumed for tanker railcars.

Note: True vapor pressure and molecular weight of vapors from AP-42 Table 7.1-2 (Gasoline RVP

10); bulk liquid temperature from TANKS output for denaturant tank.

Note: True vapor pressure from AP-42 Table 7.1-3 (ethanol) and 7.1-2 (Gasoline RVP10); molecular

weight of vapors from AP-42 Section 7.1.4 calculations; bulk liquid temperature from TANKS output

for denatured ethanol storage tank.

Emissions calculated using the AP-42 equation for loading petroleum liquid, Eq. 1, Chapter 5.2, June 2008. Maximum hourly denatured ethanol loadout based on maximum pump capacity. It is conservatively assumed that vapors from loading trucks with ethanol are gasoline. Rail cars are assumed to be dedicated.

Controlled Total HAPs

Controlled Hexane (29%)

Controlled Benzene (3.2%)

Controlled VOC Emissions

Uncontrolled VOC Emissions

Controlled Toluene (3%)

𝐿𝐿 = 12.46 ∗ 𝑆 ∗ 𝑃 ∗𝑀

𝑇

𝐿𝐿 = 12.46 ∗ 𝑆 ∗ 𝑃 ∗𝑀

𝑇

Facility-Wide Potential to Emit - Ethanol Loadout Flare Combustion (TREA21/CE026, STRU35/SV025)Green Plains Otter Tail, LLCFergus Falls, MN

Combustion EmissionsTotal Heat Input Capacity: 0.0204 MMBtu/hrMax. Loading Rate 60,000 gal/hrVolume Loaded 66,659,830 gal/yr

PollutantEmission Factor1,2,3,4

(lb/MMscf)Emission Factor5,6

(lb/MMBtu)Emission Factor5,6

(lb/gal)Operating

HoursEmission Rate

(lb/hr)

Potential Emissions

(tpy)SO2 0.60 5.88E-04 8,760 1.20E-05 5.26E-05NOx 1.68E-05 8,760 1.01 0.559VOC VOC emissions are calculated in the Ethanol Loadout Calculations.CO 3.92E-05 8,760 2.35 1.31PM, PM10, PM2.5 PM, PM10, PM2.5 emissions assumed to be negligible based on smokeless design

CO2 116.89 8,760 2.38 10.4CH4 2.20E-03 8,760 4.49E-05 1.97E-04N2O 2.20E-04 8,760 4.49E-06 1.97E-05CO2e 8,760 2.39 10.5Ammonia 3.2 3.14E-03 8,760 6.40E-05 2.80E-042-Methylnaphthalene 2.40E-05 2.35E-08 8,760 4.80E-10 2.10E-09 POM3-Methylchloranthrene 1.80E-06 1.76E-09 8,760 3.60E-11 1.58E-10 POM7,12-Dimethylbenz(a)anthracene 1.60E-05 1.57E-08 8,760 3.20E-10 1.40E-09 POMAcenaphthene 1.80E-06 1.76E-09 8,760 3.60E-11 1.58E-10 POMAcenaphthylene 1.80E-06 1.76E-09 8,760 3.60E-11 1.58E-10 POMAnthracene 2.40E-06 2.35E-09 8,760 4.80E-11 2.10E-10 POMArsenic 2.00E-04 1.96E-07 8,760 4.00E-09 1.75E-08Benz(a)anthracene 1.80E-06 1.76E-09 8,760 3.60E-11 1.58E-10 POMBenzene 2.10E-03 2.06E-06 8,760 4.20E-08 1.84E-07Benzo(a)pyrene 1.20E-06 1.18E-09 8,760 2.40E-11 1.05E-10 POMBenzo(b)fluoranthene 1.80E-06 1.76E-09 8,760 3.60E-11 1.58E-10 POMBenzo(g,h,i)perylene 1.20E-06 1.18E-09 8,760 2.40E-11 1.05E-10 POMBenzo(k)fluoranthene 1.80E-06 1.76E-09 8,760 3.60E-11 1.58E-10 POMBeryllium 1.20E-05 1.18E-08 8,760 2.40E-10 1.05E-09Cadmium 1.10E-03 1.08E-06 8,760 2.20E-08 9.64E-08Chromium 1.40E-03 1.37E-06 8,760 2.80E-08 1.23E-07Chrysene 1.80E-06 1.76E-09 8,760 3.60E-11 1.58E-10 POMCobalt 8.40E-05 8.24E-08 8,760 1.68E-09 7.36E-09Dibenzo(a,h)anthracene 1.20E-06 1.18E-09 8,760 2.40E-11 1.05E-10 POMDichlorobenzene 1.20E-03 1.18E-06 8,760 2.40E-08 1.05E-07Fluoranthene 3.00E-06 2.94E-09 8,760 6.00E-11 2.63E-10 POMFluorene 2.80E-06 2.75E-09 8,760 5.60E-11 2.45E-10 POMFormaldehyde 7.50E-02 7.35E-05 8,760 1.50E-06 6.57E-06Hexane 1.80E+00 1.76E-03 8,760 3.60E-05 1.58E-04Indeno(1,2,3-cd)pyrene 1.80E-06 1.76E-09 8,760 3.60E-11 1.58E-10 POMLead 5.00E-04 4.90E-07 8,760 1.00E-08 4.38E-08Manganese 3.80E-04 3.73E-07 8,760 7.60E-09 3.33E-08Mercury 2.60E-04 2.55E-07 8,760 5.20E-09 2.28E-08Naphthalene 6.10E-04 5.98E-07 8,760 1.22E-08 5.34E-08 POMNickel 2.10E-03 2.06E-06 8,760 4.20E-08 1.84E-07Phenanthrene 1.70E-05 1.67E-08 8,760 3.40E-10 1.49E-09 POMPyrene 5.00E-06 4.90E-09 8,760 1.00E-10 4.38E-10 POMSelenium 2.40E-05 2.35E-08 8,760 4.80E-10 2.10E-09Toluene 3.40E-03 3.33E-06 8,760 6.80E-08 2.98E-07Total Polycyclic Organic Matter (POM) 1.40E-08 6.12E-08Total HAPs 3.78E-05 1.65E-04

2 - Emission factors for CO and NOx are from manufacturer's information.3 - Emission factors for VOC from Tables 13.5-1 and 13.5-2 of AP-42. VOC factor is less methane4 - Emission factors for ammonia are from webfire.

6 - GHG lb/MMBtu emission factors are IDNR Estimation of Greenhouse Gas Emissions.

1 - Emission factors (except CO, NOx, VOC, and ammonia) for natural gas combustion are from Tables 1.4-2, 1.4-3 and 1.4-4 of AP-42.

5 - Emission factors were converted from lb/MMscf to lb/MMBtu using an assumed higher heating value of 1,020 Btu/scf (per footnote "a" of Table 1.4-1).

Facility-Wide Potential to Emit - Fermentation Scrubber (STRU24/SV026)Green Plains Otter Tail, LLCFergus Falls, MN

Controlled Permit Limit

(lb/hr) Engineering FactorLimited Potential Emissions (lb/hr) Operating Hours


(tpy)Control

Efficiency (%)Unrestricted

PTE (tpy)11.28 11.28 8,760 49.4 95% 988

1.25 0.841 8,760 3.68 85% 24.61.25 0.040 8,760 0.175 32.5% 0.2601.25 0.020 8,760 8.76E-02 85% 0.5841.25 0.095 8,760 0.416 95% 8.321.25 0.996 8,760 4.36 --- 33.7

1 - ABS injection stack test emission factors are from the March 1-2, 2017 stack test

GHG Emissions Calculation

Operating Hours8,760

--1 - CO2 emissions from fermentation are biogenic

EquationWhere:

ECO2 = CO2 emissions from fermentation, (ton/yr)V200 proof EtOH = Volume of 200 proof ethanol produced (gal/yr)EFfermentation = CO2 emission rate (lb CO2/gal 200 proof EtOH), default = 6.29

Example Calculation

ECO2 = 65,000,000 gal * 6.29 lb CO2 * 1 ton =gal 2000 lb

204,425 ton CO2

CO2e -- -- 46,672 204,425

Note: Equation 4-5 from Greenhouse Gas Emissions Estimation Methodologies for Biogenic Emissions from Selected Source Categories: Solid Waste Disposal Wastewater Treatment Ethanol

Fermentation, 2010

46,672Emission Rate (lb/hr)

Potential Emissions (tpy)

204,425

MethanolTotal HAPs

0.0760.797

Pollutant 1

CO2 65,000,000

Annual Gallons Undenatured Ethanol

Produced (gal/yr)Emission Factor

(lb CO2/gal 200 proof EtOH)6.29

Most Recent Stack Test Results Using

ABS Injection (lb/hr)1

--0.6730.0320.016

PollutantVOC

AcetaldehydeAcrolein

Formaldehyde

𝐸𝐶𝑂2 = 𝑉200 𝑝𝑟𝑜𝑜𝑓 𝐸𝑡𝑂𝐻 ∗ 𝐸𝐹𝑓𝑒𝑟𝑚𝑒𝑛𝑡𝑎𝑡𝑖𝑜𝑛 ∗1 𝑡𝑜𝑛

2000 𝑙𝑏

Facility-Wide Potential to Emit - Vent Gas Scrubber (STRU25/SV027)Green Plains Otter Tail, LLCFergus Falls, MN

Pollutant

Most Recent Stack Test Results Using

ABS Injection (lb/hr)1Controlled Permit Limitation (lb/hr) Engineering Factor


(lb/hr)Operating

Hours

Limited Potential

Emissions (tpy)

Control Efficiency

(%)Unrestricted

PTE (tpy)VOC -- 4.75 4.75 8,760 20.8 95% 416Acetaldehyde 0.240 1.25 0.300 8,760 1.31 85% 8.76Acrolein 0.005 1.25 6.25E-03 8,760 2.74E-02 32.5% 4.06E-02Formaldehyde 0.003 1.25 3.75E-03 8,760 1.64E-02 85% 0.110Methanol 0.003 1.25 3.75E-03 8,760 1.64E-02 95% 0.329Total HAPs 0.251 1.25 0.314 8,760 1.37 --- 9.241 - ABS injection stack test emission factors are from the March 1, 2017 stack test

GHG Emissions Calculation

Pollutant

Tested Volumetric Airflow from Vent Gas

Scrubber, SCFMAverage Vent Gas CO2

Concentration1 Operating Hours Emission Rate (lb/hr)

Potential Emissions

(tpy)CO2 900 10.6% 8,760 654 2,864CO2e -- -- -- 654 2,8641 - Emission factor is from the August 25, 2016 stack testConversion from % CO2 and airflow rate to lb/hr:

Standard Volume 24.05 L/gmol (molar volume of an ideal gas at 20 °C and 101.325 kPa)MW CO2 44 g/gmol

Volume conversion 28.32 L / ft3

Weight conversion 453.59 g / lbTime conversion 60 min / hr

(24.05 L/gmol) x (453.59 g/lb)(airflow, scfm) x (60 min/hr) x (28.32 L/ft3) x (% CO2 by volume) x (44 g CO2/gmol CO2)CO2 lb/hr =

Facility-Wide Potential to Emit - Regenerative Thermal Oxidizer (EQUI55/EU050, EQUI 56/EU051, TREA25/CE030, TREA 39, STRU26/SV028, STRU 79, STRU 80)Green Plains Otter Tail, LLCFergus Falls, MN

Process Emissions

PollutantStack Test Results

(lb/hr)1Controlled Permit Limitation (lb/hr)

Engineering Factor

Estimated Emission

Factor (lb/hr)

Limited Potential

Emissions(lb/hr)

Operating Hours

Limited Potential

Emissions (tpy)

Control Efficiency

(%)Unrestricted

PTE (tpy)PM -- 5.15 -- 5.15 8,760 22.6 62% 59.4PM10 -- 5.15 -- 5.15 8,760 22.6 62% 59.4PM2.5 -- 5.15 -- 5.15 8,760 22.6 62% 59.4CO -- 12.91 -- 12.91 8,760 56.5 97% 1,885NOx 2.66 1.25 -- 3.33 8,760 14.6 0% 14.6SO2

2 -- 3.00 3.00 8,760 13.1 0% 13.1VOC -- 5.00 -- 5.00 8,760 21.9 97% 730Acetaldehyde 0.213 1.25 -- 0.267 8,760 1.17 97% 38.9Acrolein 0.0700 1.25 -- 0.0875 8,760 0.383 97% 12.8Formaldehyde 0.0797 1.25 -- 0.100 8,760 0.436 97% 14.5Methanol 0.0200 1.25 -- 0.0250 8,760 0.110 97% 3.65Total HAPs (incl. combustion HAPs) -- 0.671 8,760 2.94 -- 70.71 - Stack test emission factors are from the December 10-11, 2014 stack test2 - There is no underlying basis behind the assumed SO2 emission factor of 3 lb/hr. The SO2 emission factor will be verified through performance testing conducted on a 10-year frequency

DDGS Cooler / DDGS Cooler Baghouse (EQUI 56/EU051, TREA 39)

Pollutant Emission Factor1 (lb/hr) Engineering FactorOperating

HoursEmission Rate

(lb/hr)

Limited Potential

Emissions (tpy)

Control Efficiency2

(%)Unrestricted

PTE (tpy)PM 0.35 2 8,760 0.700 3.07 99.0% 307PM10 0.35 2 8,760 0.700 3.07 93.0% 43.8PM2.5

3 0.35 2 8,760 0.700 3.07 93.0% 43.8

2 - Assume PM2.5 is equal to PM10.3 - Assumed control efficiency from Minn. R. 7011.0070 Listed Control Equipment and Control Equipment Efficiencies for Fabric Filters.

1 - The emission factors are based on the June 2011 stack tests on the DDGS stack at Green Plains Superior, LLC (assume detection limit for test runs that were below the detection limits)

Combustion EmissionsDDGS Dryer Heat Input Capacity: 90 MMBtu/hr EQUI 55



(lb/MMBtu)Operating

HoursEmission

Rate (lb/hr)

Potential Emissions

(tpy)Ammonia -- 3.14E-03 8,760 0.283 1.242-Methylnaphthalene 2.40E-05 2.35E-08 8,760 2.12E-06 9.28E-06 POM3-Methylchloranthrene 1.80E-06 1.76E-09 8,760 1.59E-07 6.96E-07 POM7,12-Dimethylbenz(a)anthracene 1.60E-05 1.57E-08 8,760 1.41E-06 6.18E-06 POMAcenaphthene 1.80E-06 1.76E-09 8,760 1.59E-07 6.96E-07 POMAcenaphthylene 1.80E-06 1.76E-09 8,760 1.59E-07 6.96E-07 POMAnthracene 2.40E-06 2.35E-09 8,760 2.12E-07 9.28E-07 POMArsenic 2.00E-04 1.96E-07 8,760 1.76E-05 7.73E-05Benz(a)anthracene 1.80E-06 1.76E-09 8,760 1.59E-07 6.96E-07 POMBenzene 2.10E-03 2.06E-06 8,760 1.85E-04 8.12E-04Benzo(a)pyrene 1.20E-06 1.18E-09 8,760 1.06E-07 4.64E-07 POMBenzo(b)fluoranthene 1.80E-06 1.76E-09 8,760 1.59E-07 6.96E-07 POMBenzo(g,h,i)perylene 1.20E-06 1.18E-09 8,760 1.06E-07 4.64E-07 POMBenzo(k)fluoranthene 1.80E-06 1.76E-09 8,760 1.59E-07 6.96E-07 POMBeryllium 1.20E-05 1.18E-08 8,760 1.06E-06 4.64E-06Cadmium 1.10E-03 1.08E-06 8,760 9.71E-05 4.25E-04Chromium 1.40E-03 1.37E-06 8,760 1.24E-04 5.41E-04Chrysene 1.80E-06 1.76E-09 8,760 1.59E-07 6.96E-07 POMCobalt 8.40E-05 8.24E-08 8,760 7.41E-06 3.25E-05Dibenzo(a,h)anthracene 1.20E-06 1.18E-09 8,760 1.06E-07 4.64E-07 POMDichlorobenzene 1.20E-03 1.18E-06 8,760 1.06E-04 4.64E-04Fluoranthene 3.00E-06 2.94E-09 8,760 2.65E-07 1.16E-06 POMFluorene 2.80E-06 2.75E-09 8,760 2.47E-07 1.08E-06 POMHexane 1.80 1.76E-03 8,760 0.159 0.696Indeno(1,2,3-cd)pyrene 1.80E-06 1.76E-09 8,760 1.59E-07 6.96E-07 POMLead 5.00E-04 4.90E-07 8,760 4.41E-05 1.93E-04Manganese 3.80E-04 3.73E-07 8,760 3.35E-05 1.47E-04Mercury 2.60E-04 2.55E-07 8,760 2.29E-05 1.00E-04Naphthalene 6.10E-04 5.98E-07 8,760 5.38E-05 2.36E-04 POMNickel 2.10E-03 2.06E-06 8,760 1.85E-04 8.12E-04Phenanthrene 1.70E-05 1.67E-08 8,760 1.50E-06 6.57E-06 POMPyrene 5.00E-06 4.90E-09 8,760 4.41E-07 1.93E-06 POMSelenium 2.40E-05 2.35E-08 8,760 2.12E-06 9.28E-06Toluene 3.40E-03 3.33E-06 8,760 3.00E-04 1.31E-03Total Polycyclic Organic Matter (POM) 6.16E-05 2.70E-04Total Combustion HAPs 0.160 0.701CO2 -- 116.89 8,760 10,520 46,078CH4 -- 2.20E-03 8,760 0.198 0.867N2O -- 2.20E-04 8,760 0.0198 0.0867CO2e -- -- 8,760 10,531 46,126

2 - Emission factors were converted from lb/MMscf to lb/MMBtu using a higher heating value of 1,020 Btu/scf (per footnote "a" of Table 1.4-1). GHG Emission Factors are from IDNR Estimation of Greenhouse Gas Emissions.

1 - Emission factors for natural gas combustion are from Tables 1.4-1, 1.4-2, 1.4-3 and 1.4-4 of AP-42.

RTO Heat Input Capacity: 18 MMBtu/hr TREA 25



(lb/MMBtu)Operating

HoursEmission

Rate (lb/hr)

Potential Emissions

(tpy)Ammonia -- 3.14E-03 8,760 0.0565 0.2482-Methylnaphthalene 2.40E-05 2.35E-08 8,760 4.24E-07 1.86E-06 POM3-Methylchloranthrene 1.80E-06 1.76E-09 8,760 3.18E-08 1.39E-07 POM7,12-Dimethylbenz(a)anthracene 1.60E-05 1.57E-08 8,760 2.82E-07 1.24E-06 POMAcenaphthene 1.80E-06 1.76E-09 8,760 3.18E-08 1.39E-07 POMAcenaphthylene 1.80E-06 1.76E-09 8,760 3.18E-08 1.39E-07 POMAnthracene 2.40E-06 2.35E-09 8,760 4.24E-08 1.86E-07 POMArsenic 2.00E-04 1.96E-07 8,760 3.53E-06 1.55E-05Benz(a)anthracene 1.80E-06 1.76E-09 8,760 3.18E-08 1.39E-07 POMBenzene 2.10E-03 2.06E-06 8,760 3.71E-05 1.62E-04Benzo(a)pyrene 1.20E-06 1.18E-09 8,760 2.12E-08 9.28E-08 POMBenzo(b)fluoranthene 1.80E-06 1.76E-09 8,760 3.18E-08 1.39E-07 POMBenzo(g,h,i)perylene 1.20E-06 1.18E-09 8,760 2.12E-08 9.28E-08 POMBenzo(k)fluoranthene 1.80E-06 1.76E-09 8,760 3.18E-08 1.39E-07 POMBeryllium 1.20E-05 1.18E-08 8,760 2.12E-07 9.28E-07Cadmium 1.10E-03 1.08E-06 8,760 1.94E-05 8.50E-05Chromium 1.40E-03 1.37E-06 8,760 2.47E-05 1.08E-04Chrysene 1.80E-06 1.76E-09 8,760 3.18E-08 1.39E-07 POMCobalt 8.40E-05 8.24E-08 8,760 1.48E-06 6.49E-06Dibenzo(a,h)anthracene 1.20E-06 1.18E-09 8,760 2.12E-08 9.28E-08 POMDichlorobenzene 1.20E-03 1.18E-06 8,760 2.12E-05 9.28E-05Fluoranthene 3.00E-06 2.94E-09 8,760 5.29E-08 2.32E-07 POMFluorene 2.80E-06 2.75E-09 8,760 4.94E-08 2.16E-07 POMHexane 1.80 1.76E-03 8,760 0.0318 0.139Indeno(1,2,3-cd)pyrene 1.80E-06 1.76E-09 8,760 3.18E-08 1.39E-07 POMLead 5.00E-04 4.90E-07 8,760 8.82E-06 3.86E-05Manganese 3.80E-04 3.73E-07 8,760 6.71E-06 2.94E-05Mercury 2.60E-04 2.55E-07 8,760 4.59E-06 2.01E-05Naphthalene 6.10E-04 5.98E-07 8,760 1.08E-05 4.71E-05 POMNickel 2.10E-03 2.06E-06 8,760 3.71E-05 1.62E-04Phenanthrene 1.70E-05 1.67E-08 8,760 3.00E-07 1.31E-06 POMPyrene 5.00E-06 4.90E-09 8,760 8.82E-08 3.86E-07 POMSelenium 2.40E-05 2.35E-08 8,760 4.24E-07 1.86E-06Toluene 3.40E-03 3.33E-06 8,760 6.00E-05 2.63E-04Total Polycyclic Organic Matter (POM) 1.23E-05 5.40E-05Total Combustion HAPs 0.0320 0.140CO2 -- 116.89 8,760 2,104 9,216CH4 -- 2.20E-03 8,760 0.040 0.173N2O -- 2.20E-04 8,760 3.96E-03 0.0173CO2e -- -- 8,760 2,106 9,2251 - Emission factors for natural gas combustion are from Tables 1.4-1, 1.4-2, 1.4-3 and 1.4-4 of AP-42. 2 - Emission factors were converted from lb/MMscf to lb/MMBtu using a higher heating value of 1,020 Btu/scf (per footnote "a" of Table 1.4-1). GHG Emission Factors are from IDNR Estimation of Greenhouse Gas Emissions.

Facility-Wide Potential to Emit - DDGS Dryer Startup Stack (EQUI55/EU050, STRU79)Green Plains Otter Tail, LLCFergus Falls, MN

Combustion EmissionsDDGS Dryer Heat Input Capacity: 90 MMBtu/hr EQUI 55


(lb/MMscf)Emission Factor2,3,4


(lb/hr)

Unrestricted Emissions

(tpy)Limited Emissions

(tpy)PM 7.60 0.007 50 0.67 2.94E+00 0.017PM10 7.60 0.007 50 0.67 2.94E+00 0.017PM2.5 7.60 0.007 50 0.67 2.94E+00 0.017CO 84 0.082 50 7.41 3.25E+01 0.185NOx 100 0.098 50 10.59 4.64E+01 0.265SO2 0.60 0.001 50 0.05 2.32E-01 1.32E-03VOC 5.5 0.01 50 0.49 2.13E+00 0.012Ammonia --- 3.14E-03 50 0.28 1.24E+00 0.012-Methylnaphthalene 2.40E-05 2.35E-08 50 2.12E-06 9.28E-06 5.29E-083-Methylchloranthrene 1.80E-06 1.76E-09 50 1.59E-07 6.96E-07 3.97E-097,12-Dimethylbenz(a)anthracene 1.60E-05 1.57E-08 50 1.41E-06 6.18E-06 3.53E-08Acenaphthene 1.80E-06 1.76E-09 50 1.59E-07 6.96E-07 3.97E-09Acenaphthylene 1.80E-06 1.76E-09 50 1.59E-07 6.96E-07 3.97E-09Anthracene 2.40E-06 2.35E-09 50 2.12E-07 9.28E-07 5.29E-09Arsenic 2.00E-04 1.96E-07 50 1.76E-05 7.73E-05 4.41E-07Benz(a)anthracene 1.80E-06 1.76E-09 50 1.59E-07 6.96E-07 3.97E-09Benzene 2.10E-03 2.06E-06 50 1.85E-04 8.12E-04 4.63E-06Benzo(a)pyrene 1.20E-06 1.18E-09 50 1.06E-07 4.64E-07 2.65E-09Benzo(b)fluoranthene 1.80E-06 1.76E-09 50 1.59E-07 6.96E-07 3.97E-09Benzo(g,h,i)perylene 1.20E-06 1.18E-09 50 1.06E-07 4.64E-07 2.65E-09Benzo(k)fluoranthene 1.80E-06 1.76E-09 50 1.59E-07 6.96E-07 3.97E-09Beryllium 1.20E-05 1.18E-08 50 1.06E-06 4.64E-06 2.65E-08Cadmium 1.10E-03 1.08E-06 50 9.71E-05 4.25E-04 2.43E-06Chromium 1.40E-03 1.37E-06 50 1.24E-04 5.41E-04 3.09E-06Chrysene 1.80E-06 1.76E-09 50 1.59E-07 6.96E-07 3.97E-09Cobalt 8.40E-05 8.24E-08 50 7.41E-06 3.25E-05 1.85E-07Dibenzo(a,h)anthracene 1.20E-06 1.18E-09 50 1.06E-07 4.64E-07 2.65E-09Dichlorobenzene 1.20E-03 1.18E-06 50 1.06E-04 4.64E-04 2.65E-06Fluoranthene 3.00E-06 2.94E-09 50 2.65E-07 1.16E-06 6.62E-09Fluorene 2.80E-06 2.75E-09 50 2.47E-07 1.08E-06 6.18E-09Formaldehyde 7.50E-02 7.35E-05 50 0.01 2.90E-02 1.65E-04Hexane 1.80E+00 1.76E-03 50 0.16 6.96E-01 3.97E-03Indeno(1,2,3-cd)pyrene 1.80E-06 1.76E-09 50 1.59E-07 6.96E-07 3.97E-09Lead 5.00E-04 4.90E-07 50 4.41E-05 1.93E-04 1.10E-06Manganese 3.80E-04 3.73E-07 50 3.35E-05 1.47E-04 8.38E-07Mercury 2.60E-04 2.55E-07 50 2.29E-05 1.00E-04 5.74E-07Naphthalene 6.10E-04 5.98E-07 50 5.38E-05 2.36E-04 1.35E-06Nickel 2.10E-03 2.06E-06 50 1.85E-04 8.12E-04 4.63E-06Phenanthrene 1.70E-05 1.67E-08 50 1.50E-06 6.57E-06 3.75E-08Pyrene 5.00E-06 4.90E-09 50 4.41E-07 1.93E-06 1.10E-08Selenium 2.40E-05 2.35E-08 50 2.12E-06 9.28E-06 5.29E-08Toluene 3.40E-03 3.33E-06 50 3.00E-04 1.31E-03 7.50E-06Total Polycyclic Organic Matter (POM) 6.16E-05 2.70E-04 1.54E-06Total Combustion HAPs 1.67E-01 7.30E-01 4.17E-03CO2 -- 116.89 50 10,520 46,078 263CH4 -- 0.0022 50 0.20 8.67E-01 4.95E-03N2O -- 0.00022 50 0.02 8.67E-02 4.95E-041 - Emission factors for natural gas combustion are from Tables 1.4-1, 1.4-2, 1.4-3 and 1.4-4 of AP-42. 2 - Emission factors for NOx and CO are based on manufacturer's guarantee.

4 - GHG lb/MMBtu emission factors are from 40 CFR 98 Subpart C Tables C-1 and C-2.

The DDGS Dryer vents through the startup stack during startups of the DDGS Dryer The total duration of start-ups expected to be less than 50 hours per year. While venting to the start-up stack, potential emissions consist of only natural gas combustion emissions (i.e. no DDGS being dried). The DDGS Dryer exhaust stream will be routed to the RTO for control prior to DDGS entering the dryer and the generation of process emissions.

3 - HAP Emission factors were converted from lb/MMscf to lb/MMBtu using an assumed higher heating value of 1,020 Btu/scf (per footnote "a" of Table 1.4-1). Ammonia emission factor is from EPA's WEBFIRE.

Combustion EmissionsRTO Heat Input Capacity: 18 MMBtu/hr TREA 25


(lb/MMscf)Emission Factor2,3,4


(lb/hr)

Unrestricted Emissions

(tpy)Limited Emissions

(tpy)PM 7.60 0.007 50 0.13 0.59 3.35E-03PM10 7.60 0.007 50 0.13 0.59 3.35E-03PM2.5 7.60 0.007 50 0.13 0.59 3.35E-03CO 84 0.082 50 1.48 6.49 0.037NOx 100 0.098 50 1.76 7.73 0.044SO2 0.60 0.001 50 0.01 0.05 2.65E-04VOC 5.5 0.01 50 0.10 0.43 2.43E-03Ammonia --- 3.14E-03 50 0.06 0.25 1.41E-032-Methylnaphthalene 2.40E-05 2.35E-08 50 4.24E-07 1.86E-06 1.06E-083-Methylchloranthrene 1.80E-06 1.76E-09 50 3.18E-08 1.39E-07 7.94E-107,12-Dimethylbenz(a)anthracene 1.60E-05 1.57E-08 50 2.82E-07 1.24E-06 7.06E-09Acenaphthene 1.80E-06 1.76E-09 50 3.18E-08 1.39E-07 7.94E-10Acenaphthylene 1.80E-06 1.76E-09 50 3.18E-08 1.39E-07 7.94E-10Anthracene 2.40E-06 2.35E-09 50 4.24E-08 1.86E-07 1.06E-09Arsenic 2.00E-04 1.96E-07 50 3.53E-06 1.55E-05 8.82E-08Benz(a)anthracene 1.80E-06 1.76E-09 50 3.18E-08 1.39E-07 7.94E-10Benzene 2.10E-03 2.06E-06 50 3.71E-05 1.62E-04 9.26E-07Benzo(a)pyrene 1.20E-06 1.18E-09 50 2.12E-08 9.28E-08 5.29E-10Benzo(b)fluoranthene 1.80E-06 1.76E-09 50 3.18E-08 1.39E-07 7.94E-10Benzo(g,h,i)perylene 1.20E-06 1.18E-09 50 2.12E-08 9.28E-08 5.29E-10Benzo(k)fluoranthene 1.80E-06 1.76E-09 50 3.18E-08 1.39E-07 7.94E-10Beryllium 1.20E-05 1.18E-08 50 2.12E-07 9.28E-07 5.29E-09Cadmium 1.10E-03 1.08E-06 50 1.94E-05 8.50E-05 4.85E-07Chromium 1.40E-03 1.37E-06 50 2.47E-05 1.08E-04 6.18E-07Chrysene 1.80E-06 1.76E-09 50 3.18E-08 1.39E-07 7.94E-10Cobalt 8.40E-05 8.24E-08 50 1.48E-06 6.49E-06 3.71E-08Dibenzo(a,h)anthracene 1.20E-06 1.18E-09 50 2.12E-08 9.28E-08 5.29E-10Dichlorobenzene 1.20E-03 1.18E-06 50 2.12E-05 9.28E-05 5.29E-07Fluoranthene 3.00E-06 2.94E-09 50 5.29E-08 2.32E-07 1.32E-09Fluorene 2.80E-06 2.75E-09 50 4.94E-08 2.16E-07 1.24E-09Formaldehyde 7.50E-02 7.35E-05 50 1.32E-03 0.01 3.31E-05Hexane 1.80E+00 1.76E-03 50 0.03 0.14 7.94E-04Indeno(1,2,3-cd)pyrene 1.80E-06 1.76E-09 50 3.18E-08 1.39E-07 7.94E-10Lead 5.00E-04 4.90E-07 50 8.82E-06 3.86E-05 2.21E-07Manganese 3.80E-04 3.73E-07 50 6.71E-06 2.94E-05 1.68E-07Mercury 2.60E-04 2.55E-07 50 4.59E-06 2.01E-05 1.15E-07Naphthalene 6.10E-04 5.98E-07 50 1.08E-05 4.71E-05 2.69E-07Nickel 2.10E-03 2.06E-06 50 3.71E-05 1.62E-04 9.26E-07Phenanthrene 1.70E-05 1.67E-08 50 3.00E-07 1.31E-06 7.50E-09Pyrene 5.00E-06 4.90E-09 50 8.82E-08 3.86E-07 2.21E-09Selenium 2.40E-05 2.35E-08 50 4.24E-07 1.86E-06 1.06E-08Toluene 3.40E-03 3.33E-06 50 6.00E-05 2.63E-04 1.50E-06Total Polycyclic Organic Matter (POM) 1.23E-05 5.40E-05 3.08E-07Total Combustion HAPs 0.03 1.46E-01 8.33E-04CO2 -- 116.89 50 10,520 46,078 263CH4 -- 0.0022 50 0.20 8.67E-01 4.95E-03N2O -- 0.00022 50 0.02 8.67E-02 4.95E-041 - Emission factors for natural gas combustion are from Tables 1.4-1, 1.4-2, 1.4-3 and 1.4-4 of AP-42. 2 - Emission factors for NOx and CO are based on manufacturer's guarantee.

4 - GHG lb/MMBtu emission factors are from 40 CFR 98 Subpart C Tables C-1 and C-2.

3 - HAP Emission factors were converted from lb/MMscf to lb/MMBtu using an assumed higher heating value of 1,020 Btu/scf (per footnote "a" of Table 1.4-1). Ammonia emission factor is from EPA's WEBFIRE.

Facility-Wide Potential to Emit - DDGS Cooler RTO Bypass (EQUI56/EU051; TREA39; STRU80)Green Plains Otter Tail, LLCFergus Falls, MN

Pollutant

Controlled Test Result at

Similar Source (lb/ton

DDGS)1

DDGS Cooler Maximum

Capacity (ton/hr)2Emission Rate

(lb/hr)

Operating

Hours

Unrestricted

Emissions

(tpy)

Limited Potential

Emissions

(tpy)

PM 1.52E-02 1.37 See Below 0.0342PM10 1.52E-02 1.37 See Below 0.0342PM2.5 1.52E-02 1.37 See Below 0.0342VOC 1.16E-01 10.5 45.9 0.262Acetaldehyde < 1.12E-02 1.01 4.43 0.0253Acrolein < 1.29E-02 1.16 5.09 0.0291Formaldehyde < 2.47E-04 0.0222 0.0974 5.56E-04Methanol < 5.12E-03 0.461 2.02 0.0115Total HAPs 2.66 11.6 0.0664

PM Control Efficiency

PM10 Control Efficiency

PM2.5 Control Efficiency EF Source PM

(tpy)PM10

(tpy)PM2.5

(tpy)STRU80 EQUI56/EU051 DDGS Cooling 30 8,760 99% 93% 93% [1] 599 85.6 85.6

[1] Uncontrolled PM/PM10/PM2.5 emissions estimated assuming control efficiency from Minn. R. 7011.0070 Listed Control Equipment and Control Equipment Efficiencies for Fabric Filters.

2 - Maximum capacity of the Green Plains Otter Tail DDGS Cooler is 30 tons per hour.3 - Emission rate includes a engineering safety factor of 3.

The DDGS Cooler will vent to atmosphere during startups, shutdowns and malfunctions of the RTO.

Stack Vent EmissionUnit Description Process Weight

Rate (ton/hr)

30 50

Operating Hours

Potential Unrestricted Emissions (based on assumed fabric filter control efficiency)

1 - PM, PM10 and PM2.5 emission rates are based on stack testing performed in January, 2018 on a similar source at Green Plains Ord. VOC and HAP emission rates are based on stack testing performed in October, 2017 on a similar source at Green Plains Ord. HAPs were not detected during the testing but are included at their respective detection limits.

The individual fractions of these HAP compounds present in the DDGS cooler exhaust is unknown. MPCA staff has accepted the use of measured HAP emission rates from the Ord, NE facilty as a means for estimating HAP emissions from these operations to support this permit action, and not necessarily from future permit actions, as they don't impact any applicability determinations. These emission factors should not be considered to be approved by the MPCA.

Facility-Wide Potential to Emit - Emergency Generator (EQUI18/EU027, STRU36/SV034, STRU37/SV035)Green Plains Otter Tail, LLCFergus Falls, MN

Internal Combustion of Diesel Fuel in Engines (>600 hp)Engine Horsepower 1,700 hpBrake-specific Fuel Consumption 7,000 Btu/hpOperating Hours 500 hr


(g/hp-hr)Emission Factor2,3

(lb/MMBtu)Emission Rate

(lb/hr)Unrestricted PTE (ton/yr)

Operating Hours4


(tpy)NOx 6.44 24.1 106 500 6.03CO 0.43 1.61 7.06 500 0.403SOx 0.01 2.06E-02 9.04E-02 500 5.16E-03PM 0.11 0.412 1.81 500 0.103PM10 0.11 0.412 1.81 500 0.103PM2.5 0.11 0.412 1.81 500 0.103VOC 0.31 1.16 5.09 500 0.290CO2 163.05 1,940 8499 500 485CH4 6.61E-03 7.87E-02 3.45E-01 500 1.97E-02N2O 6.61E-04 7.87E-03 3.45E-02 500 1.97E-03CO2e 1,945 8517 500 486Benzene 7.76E-04 9.23E-03 4.04E-02 500 2.31E-03Toluene 2.81E-04 3.34E-03 1.46E-02 500 8.36E-04Xylenes 1.93E-04 2.30E-03 1.01E-02 500 5.74E-04Formaldehyde 7.89E-05 9.39E-04 4.11E-03 500 2.35E-04Acetaldehyde 2.52E-05 3.00E-04 1.31E-03 500 7.50E-05Acrolein 7.88E-06 9.38E-05 4.11E-04 500 2.34E-05Naphthalene 1.30E-04 1.55E-03 6.78E-03 500 3.87E-04 POMAcenaphthylene 9.23E-06 1.10E-04 4.81E-04 500 2.75E-05 POMAcenaphthene 4.68E-06 5.57E-05 2.44E-04 500 1.39E-05 POMFluorene 1.28E-05 1.52E-04 6.67E-04 500 3.81E-05 POMPhenanthrene 4.08E-05 4.86E-04 2.13E-03 500 1.21E-04 POMAnthracene 1.23E-06 1.46E-05 6.41E-05 500 3.66E-06 POMFluoranthene 4.03E-06 4.80E-05 2.10E-04 500 1.20E-05 POMPyrene 3.71E-06 4.41E-05 1.93E-04 500 1.10E-05 POMBenz(a)anthracene 6.22E-07 7.40E-06 3.24E-05 500 1.85E-06 POMChrysene 1.53E-06 1.82E-05 7.97E-05 500 4.55E-06 POMBenzo(b)fluoranthene 1.11E-06 1.32E-05 5.79E-05 500 3.30E-06 POMBenzo(k)fluoranthene 2.18E-07 2.59E-06 1.14E-05 500 6.49E-07 POMBenzo(a)pyrene 2.57E-07 3.06E-06 1.34E-05 500 7.65E-07 POMIndeno(1,2,3-cd)pyrene 4.14E-07 4.93E-06 2.16E-05 500 1.23E-06 POMDibenzo(a,h)anthracene 3.46E-07 4.12E-06 1.80E-05 500 1.03E-06 POMBenzo(g,h,i)perylene 5.56E-07 6.62E-06 2.90E-05 500 1.65E-06 POMTotal Polycyclic Organic Matter (POM) 2.52E-03 1.10E-02 6.29E-04Total HAPs 0.0187 0.0820 4.68E-031 - Criteria Pollutant emission factors from manufacturer, Mitsubishi.2 - HAP emission factors from AP-42 Chapter 3.4 Large Stationary Diesel Engines (greater than 600 HP) Table 3.4-3 and 3.4-4.3 - CO2, N2O, & CH4 emission factors from 40 CFR Part 98 Tables C-1 and C-2.4 - PTE calculated assuming 500 operating hours per year (1995 EPA Emergency Generator Memo)

Facility-Wide Potential to Emit - Bin Vents (STRU27/SV036, STRU28/SV037, STRU29/SV040, STRU30/SV039, STRU31/SV038)Green Plains Otter Tail, LLCFergus Falls, MN

Potential EmissionsThoughput1

(tpy) PM (lb/ton)

PM10

(lb/ton)PM2.5

(lb/ton)PM

(tpy)PM10

(tpy)PM2.5

(tpy)SV 036 EU 058 Grain Bin #1 135,821 1.70 0.428 0.0747SV 037 EU 059 Grain Bin #2 135,821 1.70 0.428 0.0747SV 038 EU 060 Grain Bin #3 135,821 1.70 0.428 0.0747SV 039 EU 063 Grain Bin #4 135,821 1.70 0.428 0.0747SV 040 EU 066 Grain Bin #5 135,821 1.70 0.428 0.0747Total 8.49 2.14 0.374

1 - Assumes the total annual grain throughput distributed equally across the five bins.

Maximum Hourly Thoughput (for modeling)Thoughput1

(ton/hr) PM (lb/ton)

PM10

(lb/ton)PM2.5

(lb/ton)PM

(lb/hr)PM10

(lb/hr)PM2.5

(lb/hr)SV 036 EU 058 Grain Bin #1 420 10.5 2.65 0.462SV 037 EU 059 Grain Bin #2 420 10.5 2.65 0.462SV 038 EU 060 Grain Bin #3 420 10.5 2.65 0.462SV 039 EU 063 Grain Bin #4 420 10.5 2.65 0.462SV 040 EU 066 Grain Bin #5 420 10.5 2.65 0.462Total 52.5 13.2 2.31

1 - Assumes the maximum hourly throughput of 15,000 bushel to each bin. Only two bins can be filled simultaneously.

Uncontrolled Potential EmissionsThoughput1

(ton/yr) PM (lb/ton)

PM10

(lb/ton)PM2.5

(lb/ton)PM

(tpy)PM10

(tpy)PM2.5

(tpy)SV 036 EU 058 Grain Bin #1 3,679,200 46.0 11.6 2.02SV 037 EU 059 Grain Bin #2 3,679,200 46.0 11.6 2.02SV 038 EU 060 Grain Bin #3 3,679,200 46.0 11.6 2.02SV 039 EU 063 Grain Bin #4 3,679,200 46.0 11.6 2.02SV 040 EU 066 Grain Bin #5 3,679,200 46.0 11.6 2.02Total 230 57.9 10.1

1 - Assumes the maximum hourly throughput of 15,000 bushel to each bin.

0.025 0.0063

AP-42 Emission Factor Uncontrolled Potential Emissions

0.0011

Stack Vent EU No. Description



0.025 0.0063 0.0011

Potential Emissions

Emission RateAP-42 Emission Factor

AP-42 Emission Factor

0.025 0.0063 0.0011

Facility-Wide Potential to Emit - Equipment Leaks (FUGI15/FS005)Green Plains Otter Tail, LLCFergus Falls, MN

Process Area Equipment ServiceComponent

Count

Emission Factor

(kg/hr/source) TOC WeightControl

Efficiency

Hourly Emissions

(lb/hr)

Annual Emissions

(ton/yr)Fermentation Valves Gas/Vapor 0 0.00597 23% 87% -- --

Valves Light Liquid 170 0.00403 23% 84% 0.06 0.24Valves Heavy Liquid 0 0.00023 23% 0% -- --Pumps Light Liquid 6 0.0199 23% 69% 0.02 0.08Pumps Heavy Liquid 0 0.00862 23% 0% -- --

Compressor Seals Gas/Vapor 0 0.228 23% 0% -- --Pressure-Relief Valves Gas/Vapor 0 0.104 23% 0% -- --Pressure-Relief Valves Light Liquid 0 0.00403 23% 0% -- --Sampling Connections All 0 0.015 23% 0% -- --

Open-ended Lines All 0 0.0017 23% 0% -- --Flanges All 568 0.00183 23% 0% 0.53 2.31

Distillation Valves Gas/Vapor 75 0.00597 82% 87% 0.10 0.46Valves Light Liquid 161 0.00403 82% 84% 0.19 0.82Valves Heavy Liquid 0 0.00023 82% 0% -- --Pumps Light Liquid 5 0.0199 82% 69% 0.06 0.24Pumps Heavy Liquid 0 0.00862 82% 0% -- --

Compressor Seals Gas/Vapor 0 0.228 82% 0% -- --Pressure-Relief Valves Gas/Vapor 8 0.10 82% 0% 1.50 6.56Pressure-Relief Valves Light Liquid 4 0.10 82% 0% 0.75 3.28Sampling Connections All 0 0.015 82% 0% -- --

Open-ended Lines All 0 0.0017 82% 0% -- --Flanges All 869 0.00183 82% 0% 2.86 12.55

Tank Farm Valves Gas/Vapor 5 0.00597 100% 87% 0.01 0.04Valves Light Liquid 176 0.00403 100% 84% 0.25 1.10Valves Heavy Liquid 0 0.00023 100% 0% -- --Pumps Light Liquid 6 0.0199 100% 69% 0.08 0.36Pumps Heavy Liquid 0 0.00862 100% 0% -- --

Compressor Seals Gas/Vapor 0 0.228 100% 0% -- --Pressure-Relief Valves Gas/Vapor 1 0.104 100% 0% 0.23 1.00Pressure-Relief Valves Light Liquid 10 0.00403 100% 0% 0.09 0.39Sampling Connections All 0 0.015 100% 0% -- --

Open-ended Lines All 0 0.0017 100% 0% -- --Flanges Light Liquid 560 0.00183 100% 0% 2.26 9.90

Total 8.98 39.31 - Component counts are taken from the Subpart VV equipment inventory. 2 - TOC is considered to be worst case for each process stream identified.3 - Emission factors taken from Protocol for Equipment Leak Emission Estimates, EPA-453/R-95-017, Table 2-1 and Table 5-2.4 - Emission rates taken from Protocol for Equipment Leak Emission Estimates, EPA-453/R-95-017, are based on the average emission factor approach for estimating emissions.

VOC emissions from fugitive sources are calculated based on component counts and EPA's Protocol for Equipment Leak Emission Estimates,

HAPs for fermentation components are computed as a fraction of total VOCs based on the results of the March 1-2, 2017 stack test results from the fermentation scrubber.

HAP FractionAcetaldehyde 1.11E-01Acrolein 5.30E-03Formaldehyde 2.65E-03Methanol 1.26E-02Total

HAPs for distillation and tank farm components are computed assuming 200 ppm of each HAP in the 190 and 200 proof ethanol.

HAP FractionAcetaldehyde 2.00E-04Acrolein 2.00E-04Formaldehyde 2.00E-04Methanol 2.00E-04Total

HAP FractionBenzene (3.2%) 7.97E-04n-Hexane (29%) 7.22E-03Toluene (3%) 7.47E-04Total

HAP AcetaldehydeAcroleinFormaldehydeMethanolBenzenen-HexaneTolueneTotal

2.18E-030.0211

2.32E-03

0.491

Emissions (tpy)0.301

2.18E-021.48E-024.11E-021.02E-020.0923

9.55E-03

9.37E-03

0.112

0.06884.97E-03

1.78E-031.78E-031.78E-03

Emissions (lb/hr)6.70E-023.19E-031.59E-037.59E-03

The individual fractions of these HAP compounds present in various fermentation process streams are unknown. MPCA staff has accepted the use of measured fermentation scrubber-controlled HAP emission rates as a means for estimating HAP emissions from equipment leaks in the fermentation process to support this permit action, and not necessarily from future permit actions, as they don't impact any applicability determinations. These emission factors should not be considered to be approved by the MPCA. The concentration of acetaldehyde in the beer stream has been conservatively estimated for the purposes of calculating HAP emissions. Measurements of acetaldehyde in the beerwell at the facility (October 2011) have demonstrated that concentrations do not exceed 0.02 percent by weight.

6.98E-033.33E-023.48E-01

Emissions (tpy)Distillation and Tank Farm Equipment Leak HAP Emission Calculation

7.94E-02

Emissions (lb/hr)

1.78E-037.12E-03

Emissions (lb/hr)2.32E-03

Emissions (lb/hr)

Tank Farm Equipment Leak HAP Emission Calculation

3.37E-03

Total Equipment Leak HAP Emission Calculation

1.12E-019.55E-03

7.80E-037.80E-037.80E-037.80E-033.12E-02

Denaturant HAP emissions for tank farm components are computed as a fraction of total VOCs in denatured ethanol based on the maximum HAP compositions between the Oneok Natural Gasoline SDS (2009) and the Enterprise Natural Gasoline SDS (2013).

Emissions (tpy)1.02E-029.23E-022.11E-02

2.18E-032.56E-02

Emissions (tpy)2.94E-011.40E-02

Fermentation Equipment Leak HAP Emission Calculation

Facility-Wide Potential to Emit - Storage Tanks (EQUI58/TK001, EQUI59/TK002, EQUI60/TK003, EQUI61/TK004, EQUI62/TK005)Green Plains Otter Tail, LLCFergus Falls, MN

Tank Capacity Throughput Height Diameter Ethanol VOC Denaturant VOC Total VOC Total VOCTank ID Contents (gallons) (gal/yr) (ft) (ft) Turnovers (lb/yr) (lb/yr) (lb/hr) (tpy)EQUI58/TK001 200 Proof Tank 158,000 32,500,000 38 30 206 341 0 0.0389 0.171EQUI59/TK002 200 Proof Tank 158,000 32,500,000 38 30 206 341 0 0.0389 0.171EQUI60/TK003 Denaturant Storage Tank 50,700 1,659,830 32 20 33 0 1011 0.115 0.505EQUI61/TK004 Denatured Ethanol Tank #1 1,000,000 33,329,915 50 60 33 271 62 0.0380 0.166EQUI62/TK005 Denatured Ethanol Tank #2 1,000,000 33,329,915 50 60 33 271 62 0.0380 0.166VOC emissions calculated using USEPA's TANKS 4.09d. See attached output.

TK003 TK004 TK005 TK003 TK004 TK005Benzene 3.20% 3.69E-03 2.27E-04 2.27E-04 1.62E-02 9.95E-04 9.95E-04Hexane 29.00% 3.35E-02 2.06E-03 2.06E-03 1.47E-01 9.02E-03 9.02E-03Toluene 3.00% 3.46E-03 2.13E-04 2.13E-04 1.52E-02 9.33E-04 9.33E-04Total HAPs 4.06E-02 2.50E-03 2.50E-03 1.78E-01 1.09E-02 1.09E-02

Potential Emissions (tpy)Denaturant CompositionPollutant


Emissions calcualted as a fraction of VOC in the denaturant. Denaturant fractions are based on the maximum HAP compositions between the Oneok Natural Gasoline SDS (2009) and the Enterprise Natural Gasoline SDS (2013)

EC-3A - Facility-Wide Potential to Emit - Plant Roads (FUGI17/FS004)Green Plains Otter Tail, LLCFergus Falls, MN

Paved RoadsEmissions calculated based on AP-42 Section 13.2.1 (January 2011)

Variable PM PM10 PM2.5k 0.011 0.0022 0.00054sL 1.3 1.3 1.3W 29 29 29P 108 108 108N 365 365 365E 0.40 0.08 0.02

Activity

Annual Throughput

(tons or gallons)

Quantity Transported per

TruckNo. of Trucks

(trucks/yr)

Miles Traveled per

Truck (miles/truck)

Mileage(VMT/yr)

PM Emissions

(ton/yr)

PM10

Emissions (ton/yr)

PM2.5

Emissions (ton/yr)

Grain Receiving 679,104 25 ton 27,165 0.85 23,090 4.63 0.926 0.227DDGS/MDGS Haul Out 212,220 25 ton 8,489 0.85 7,216 1.45 0.289 7.11E-02Ethanol Load Out 66,659,830 8000 gal 8,333 0.85 7,083 1.42 0.284 6.97E-02Denaturant Receiving 1,659,830 8000 gal 208 0.85 177 3.55E-02 7.09E-03 1.74E-03Totals 7.54 1.51 0.370

Activity

Hourly Throughput

(tons or gallons)

Quantity Transported per

TruckNo. of Trucks

(trucks/hr)

Miles Traveled per

Truck (miles/truck)

Mileage(VMT/hr)

PM Emissions

(lb/hr)

PM10

Emissions (lb/hr)

PM2.5

Emissions (lb/hr)

Grain Receiving 604 25 ton 25 0.85 21.25 8.53 1.705 0.419DDGS/MDGS Haul Out 180 25 ton 8 0.85 6.80 2.73 0.546 0.134Ethanol Load Out 54,180 8000 gal 7 0.85 5.95 2.39 0.477 0.117Denaturant Receiving 8,000 8000 gal 1 0.85 0.85 0.341 6.82E-02 1.67E-02Totals 14.0 2.80 0.686

Emission factor (lb/vehicle miles traveled (VMT))Number of days in averaging period

DescriptionParticle size multiplier (dimensionless)Road surface silt loading - annual average (g/m2) Average vehicle weight (tons)Number of days with precipitation

𝐸 = 𝑘 ∗ 𝑠𝐿0.91 ∗ 𝑊1.02 ∗ 1 −𝑃

4𝑁

EC-3A - Facility-Wide Potential to Emit - Unpaved Plant Roads (FUGI18)Green Plains Otter Tail, LLCFergus Falls, MN

Unpaved Truck Traffic EmissionsEmissions calculated based on AP-42 Chapter 13.2.2 (11/06)

Variable PM PM10 PM2.5

k1 4.9 1.5 0.15a1 0.7 0.9 0.9b1 0.45 0.45 0.45

sC2 10 10 10W3 27.5 27.5 27.5P4 105 105 105

CEannual6 80% 80% 80%

CEhourly6 40% 40% 40%

Eannual 1.67 0.492 0.0492Ehourly 7.01 2.07 0.207

1 - Particle size multipliers from AP-42 Table 13.2.2-2.2 - Assumed the silt content from AP-42 Table 13.2.2-1 for stone quarrying and processing industry 3 - Based on a truck average rate.4 - The days of precipitation are interpolated from AP-42 Figure 13.2.2-1.5 - The speed limit on-site.6 - Conservatively assumed.

Annual Unpaved Roads/Truck Traffic Emissions

PM PM10 PM2.5 PM PM10 PM2.5

(tons/yr) (ton /truck) (trucks/yr) (miles/truck) (VMT) (tpy) (tpy) (tpy) (tpy) (tpy) (tpy)Unpaved Loading 59,640 25 2,386 0.20 477 0.397 0.117 0.0117 1.99 0.586 0.0586Unpaved Unloading 59,640 25 2,386 0.20 477 0.397 0.117 0.0117 1.99 0.586 0.0586

0.795 0.235 0.0235 3.97 1.17 0.1171 - Annual throughput of the corn pile.

Hourly Unpaved Roads/Truck Traffic Emissions

PM PM10 PM2.5

(tons/hr) (ton /truck) (trucks/hr) (miles/truck) (VMT) (lb/hr) (lb/hr) (lb/hr)Unpaved Loading 607 25 24 0.20 4.85 34.0 10.0 1.00Unpaved Unloading 257 25 10 0.20 2.05 14.4 4.25 0.425

48.4 14.3 1.431 - Hourly loading rate based on 21,667 bu/hr receiving capacity and 56 lb/bu

DescriptionParticle Size Multiplier (dimensionless)Particle Size Multiplier (dimensionless)Particle Size Multiplier (dimensionless)

Silt Content (%)Average Vehicle Weight (tons)

Days >0.01 Inch Precipitation (days)Annual Control Efficiency (%)Hourly Control Efficiency (%)

Emission factor (lb/vehicle miles traveled (VMT))Emission factor (lb/VMT)

ActivityMaterial

Trucked 1Material per

Truck No. of Trucks

Totals:

2 - Hourly unloading rate based on 9,167 bu/hr unloading capacity and 56 lb/bu

Vehicle Mileage

Limited Potential Emissions Unrestricted Potential Emissions

Totals:

ActivityMaterial

Trucked1,2Material per

Truck No. of Trucks Miles Traveled per Truck

Vehicle Mileage

Miles Traveled per Truck

Emission Rate

𝐸𝑎𝑛𝑛𝑢𝑎𝑙 = 𝑘 ∗𝑠𝐶

12

𝑎

∗𝑊

3

𝑏

∗365 − 𝑃

365∗ (1 − 𝐶𝐸𝑎𝑛𝑛𝑢𝑎𝑙)

𝐸ℎ𝑜𝑢𝑟𝑙𝑦 = 𝑘 ∗𝑠𝐶

12

𝑎

∗𝑊

3

𝑏

∗ 1 − 𝐶𝐸ℎ𝑜𝑢𝑟𝑙𝑦

Facility-Wide Potential to Emit - Wetcake (FUGI16/FS006)Green Plains Otter Tail, LLCFergus Falls, MN

DENCO Production 18 tons/hr wetcake (wet basis) productionProduction 93.8 tons/hr wetcake (wet basis) production

Emission Factor2,3 Emission Factor Emission Rate Potential Emissions(lb/hr) (lb/ton) (lb/hr) (tpy)

VOC (as carbon) 0.07 3.89E-03 0.365 1.60VOC (w/ EtOH response factor) 0.15 0.01 0.781 3.42Acetaldehyde 1.00E-03 5.56E-05 5.21E-03 2.28E-02Acrolein 1.50E-04 8.33E-06 7.81E-04 3.42E-03Formaldehyde 0.01 3.33E-04 3.13E-02 1.37E-01Methanol 1.25E-03 6.94E-05 6.51E-03 2.85E-02Total HAP 0.0438 0.1921 - Half the detection limit used as emission estimate for all HAPs since they were non-detect results. 2 - Emission Factor from November 2, 2004 stack test at wetcake storage building at DENCO, LLC in Morris, MN.3 - Emission Factors are based on a wetcake production rate of 18 ton per hour.

Pollutant1

Facility-Wide Potential to Emit - Temporary Flat Storage (FUGI11/FS007, FUGI 19, FUGI 20)Green Plains Otter Tail, LLCFergus Falls, MN

Total Emissions (Controlled)PM (lb/hr) PM10 (lb/hr) PM2.5 (lb/hr) PM (tpy) PM10 (tpy) PM2.5 (tpy)

27.3 6.26 1.06 1.34 0.308 0.051918.4 5.51 0.786 2.13 0.640 0.09131.21 0.606 0.0970 2.21 1.11 0.17746.9 12.4 1.94 5.69 2.05 0.320

Total Emissions (Unrestricted/Uncontrolled)PM (lb/hr) PM10 (lb/hr) PM2.5 (lb/hr) PM (tpy) PM10 (tpy) PM2.5 (tpy)

51.6 12.4 2.12 120 27.4 4.6260.4 18.9 3.06 265 82.9 13.41.21 0.606 0.0970 2.21 1.11 0.177113 31.9 5.29 387 111 18.2

Receiving

Receiving Capacity 260,000 bu/dayReceiving Capacity 21,667 bu/hrDaily Operating Hours 12 hr/dayAnnual Throughput 59,640 ton/yr

Emission Factors

PM 0.035 0.050PM10 0.0078 0.0126PM2.5 0.0013 0.0022

Truck Receiving and Pile Loading

PM 0.035 0% 21.2 0.050 30.3 80% 6.07 27.3 120 1.34PM10 0.0078 0% 4.73 0.0126 7.64 80% 1.53 6.26 27.4 0.308PM2.5 0.0013 0% 0.79 0.0022 1.33 80% 0.27 1.06 4.62 0.0519

Total

Receiving emissions are calculated based on (1) Truck Receiving and (2) Pile Loading.

Emission Factor (lb/ton)

Control Efficiency


Truck Receiving


2 - Pile Loading - Bin Vents emission factor based on AP-42 Table 9.9.1-1 for Storage Bin Vent (includes emissions from two handling steps: receving conveyor to pile conveyor and pile conveyor to pile)

Temporary Flat Storage Receiving (FUGI 11)Activity

ActivityTemporary Flat Storage Receiving (FUGI 11)

Temporary Flat Storage Reclaim and Loadout (FUGI 19)Temporary Flat Storage Wind Erosion (FUGI 20)

Total

Uncontrolled Emission Rate

(lb/hr)

Controlled Emission Rate

(lb/hr)

Temporary Flat Storage Wind Erosion (FUGI 20)Temporary Flat Storage Reclaim and Loadout (FUGI 19)

Pile Loading - Bin Vents2

(lb/ton)Pollutant

Truck Receiving1

(lb/ton)

Control Efficiency1

Pollutant

1 - Truck Receiving emission factor based on AP-42 Table 9.9.1-1 for Grain Receiving, Hopper Truck


(lb/hr)

TotalUnrestricted

Potential Emissions (tpy)

Limited Potential

Emissions (tpy)

Pile Loading

1 - Assumes 80% control efficiency from application of mineral oil based on: - AP-42 Chapter 9.9.1 - Section 9.9.1.2 - References 57 and 61 of the Background Document for AP-42 Chapter 9.9.1 - Oil Suppression of Particulate Matter at Grain Elevators, EPA-453/R-94-049 - Calculations Guidance Package, Grain Elevators; Air Permits Division, Texas Commission on Environmental Quality - Letter from Thomas O'Connor, National Grain and Feed Association to USEPA, June 30, 1997


Reclaim

Unloading Capacity 110,000 bu/dayUnloading Capacity 9,167 bu/hrDaily Operating Hours 12 hr/dayAnnual Throughput 59,640 ton/yr

Emission Factors

PM 3.05E-02 0.025 0.18PM10 8.41E-03 0.0063 0.059PM2.5 8.41E-04 0.00 0.010

Unpaved Road Emission Factors - Backhoe


k1 4.90 1.50 0.15a1 0.70 0.90 0.90b1 0.45 0.45 0.45d1 0.30 0.50 0.50

sC2 7.10 7.10 7.10W3 32.50 32.50 32.50

7.40 7.40 7.40Ce 0% 0% 0%E 9.92 2.73 0.27E 5.56E-04 1.53E-04 1.53E-05

1 - Particle size multipliers from AP-42 Table 13.2.2-2.2 - Assumed the silt content from AP-42 Table 13.2.2-1 for sand and gravel processing material storage area .3 - Based on average weight of backhoe.4 - Backhoe stationary during loadout and re-postitions by traveling the 1/2 the width of the pile (148') every 10 trucks.5 - Based on 25 tons per truck

1 - Unpaved Roads emission factor based on AP-42 Section 13.2.2 (see table below).

Emission factor5 (lb/ton)

Particle Size Multiplier (dimensionless)Particle Size Multiplier (dimensionless)Particle Size Multiplier (dimensionless)

Silt Content (%)

Emission factor (lb/VMT)

Distance Backhoe Travels per Truck4 (feet)

Pollutant

Reclaim emissions are calculated based on: (1) reclaim backhoe traveling on unpaved roads in bunker, (2) the reclaim activities prior to loadout to truck, and (3) the loadout to truck using a backhoe

Truck Loadout3

(lb/ton)

Reclaim Activities2

(lb/ton)

Unpaved Roads1

(lb/ton)

Control Efficiency (%)

DescriptionParticle Size Multiplier (dimensionless)

Average Vehicle Weight (tons)

3 - Truck Loadout emission factor based on AP-42 Table 9.9.1-1 for Grain

Receiving, Straight Truck

2 - Reclaim Activities emission factor based on AP-42 Table 9.9.1-1 for Storage

Bin Vent


Unpaved Road Emission Factors - Reclaim Haul Trucks


k1 4.90 1.50 0.15a1 0.70 0.90 0.90b1 0.45 0.45 0.45d1 0.30 0.50 0.50

sC2 7.10 7.10 7.10W3 27.50 27.50 27.50

430.00 430.00 430.00Ce 0% 0% 0%E 9.20 2.53 0.25E 3.00E-02 8.26E-03 8.26E-04

1 - Particle size multipliers from AP-42 Table 13.2.2-2.2 - Assumed the silt content from AP-42 Table 13.2.2-1 for sand and gravel processing material storage area .3 - Based on a truck average rate.4 - Maximum distance a truck would travel within the pile area during reclaim.5 - Based on 25 tons per truck

Pile Reclaim

PM 3.05E-02 0% 7.83 0.025 6.42 80% 1.28 0.18 46.2 80% 9.24 18.4 265 2.13PM10 8.41E-03 0% 2.16 0.0063 1.62 80% 0.32 0.059 15.1 80% 3.03 5.51 82.9 0.640PM2.5 8.41E-04 0% 0.22 0.0011 0.282 80% 0.06 0.010 2.57 80% 0.513 0.786 13.4 0.0913


(lb/hr)


Control Efficiency1


Backhoe Loader / Trucks on Unpaved Roads in Bunker


Control Efficiency

Particle Size Multiplier (dimensionless)Particle Size Multiplier (dimensionless)Particle Size Multiplier (dimensionless)Particle Size Multiplier (dimensionless)

Silt Content (%)


Pollutant

Average Vehicle Weight (tons) Distance Travelled per Truck4 (feet)

Control Efficiency (%)Emission factor (lb/VMT)Emission factor5 (lb/ton)

Unrestricted Potential

Emissions (tpy)

Total

1 - Assumes 80% control efficiency from application of mineral oil based on: - AP-42 Chapter 9.9.1 - Section 9.9.1.2 - References 57 and 61 of the Background Document for AP-42 Chapter 9.9.1 - Oil Suppression of Particulate Matter at Grain Elevators, EPA-453/R-94-049 - Calculations Guidance Package, Grain Elevators; Air Permits Division, Texas Commission on Environmental Quality - Letter from Thomas O'Connor, National Grain and Feed Association to USEPA, June 30, 1997


(lb/hr)

Reclaim Activities Prior to Loadout to Truck Loadout to Truck using Backhoe Loader


(lb/hr)

Limited Potential

Emissions (tpy)



Control Efficiency1

Description


Wind Erosion

Circular Area of Pile

Variable Units PM PM10 PM2.5

s % 1.0 1.0 1.0k dimensionless 1.00 0.50 0.08P days 108 108 108

Fhourly % 100 100 100Fannual % 41.67 41.67 41.67

θ degrees 23 23 23θ radians 0.40 0.40 0.40r ft 123.03 123.03 123.03h ft 52 52 52

SA ft2 51,660.24 51,660.24 51,660.24SA acres 1.19 1.19 1.19

Ehourly lb/hr 0.41 0.20 0.03Eannual tpy 0.75 0.37 0.06

Oval Area of Pile

Variable Units PM PM10 PM2.5

s % 1.0 1.0 1.0k dimensionless 1.00 0.50 0.08P days 108 108 108

Fhourly % 100 100 100Fannual % 41.67 41.67 41.67

θ degrees 23 23 23θ radians 0.40 0.40 0.40r ft 73.82 73.82 73.82h ft 31 31 31

SAends ft2 9,298.84 9,298.84 9,298.84Ltotal ft 650.00 650.00 650.00

LCenter ft 576.18 576.18 576.18SAcenter ft2 92,412.45 92,412.45 92,412.45SATotal acres 2.33 2.33 2.33Ehourly lb/hr 0.80 0.40 0.06Eannual tpy 1.47 0.73 0.12

Radius

Description

Percent of Time Winds Exceed 12 mph

Emission Rate

TOTAL: Surface Area (excluding base)

TOTAL: LengthCENTER: Length


Silt Content of Stored MaterialParticle Size Multiplier

Angle of Repose (corn)

CENTER: Surface Area (excluding base)


Height


Silt Content of Stored MaterialParticle Size Multiplier

Days >0.01 Inch Precipitation


Potential Emissions


Emission factors are calculated using USEPA reference document EPA‐450/2‐92‐004, fugitive dust background document and technical information document for best available measures, section 2.3.1.3.3, equation 2‐12 for wind erosion from continuously active piles, September 1992.

Days >0.01 Inch Precipitation

Surface Area (excluding base)Surface Area (excluding base)

Description

Emission Rate

Angle of Repose (corn)END: RadiusEND: Height

END: Surface Area (excluding base)

Potential Emissions

SourceFines data from grain sampling AP-42 13.2.2, Table 13.2.2-2

AP-42 Figure 13.2.2-12012-2016 Fargo, ND Met Data2012-2016 Fargo, ND Met Data

SA = 2 * LCenter * (h2+r2)1/2

43,560 ft2/acreE = k * (1.7 * (s/1.5) * ((365-p)/235) * (F/15) * SA

E = k * (1.7 * (s/1.5) * ((365-p)/235) * (F/15) * SA * 6,600 hrs/2000

2012-2016 Fargo, ND Met Data2012-2016 Fargo, ND Met Data

Measured using GIStan(θ) = h/r

SA = πr(h2+r2)1/2

Measured using GIStotal length - radius of arcs on end

tan(θ) = h/r

SA = πr(h2+r2)1/2

43,560 ft2/acreE = k * (1.7 * (s/1.5) * ((365-p)/235) * (F/15) * SA

E = k * (1.7 * (s/1.5) * ((365-p)/235) * (F/15) * SA *6,600 hrs/2000

SourceFines data from grain sampling AP-42 13.2.2, Table 13.2.2-2

AP-42 Figure 13.2.2-1

Facility-Wide Potential to Emit - Gasoline Dispensing and Tank (EQUI 139 and 140)Green Plains Otter Tail, LLCFergus Falls, MN

Gasoline Tank Emissions (EQUI 139)Length: 6 feetDiameter: 5.33 feetLimited Throughput: 10,000 gal/monthLimited Throughput: 120,000 gal/yearContents: Gasoline (RVP 13)

PollutantHAP

%VOC2Hourly Emission

Rate (lb/hr)Annual Emissions

(lb/yr)

Annual Emissions

(tpy)VOC1 -- 4.04E-02 354 0.177Hexane 4.40% 1.78E-03 15.6 7.79E-03Benzene 2.20% 8.89E-04 7.79 3.89E-03Toluene 4.00% 1.62E-03 14.2 7.08E-032,2,4 Trimethylpentane 2.60% 1.05E-03 9.21 4.60E-03Xylene 1.50% 6.06E-04 5.31 2.66E-03Ethylbenzene 0.50% 2.02E-04 1.77 8.85E-04Total HAPs 11.00% 4.45E-03 38.9 1.95E-021 - VOC emissions are calculated from Tanks4.09d

Gasoline Dispensing (EQUI 140)Pump Capacity: 10 gal/100 revPump Capacity: 600 gal/hr1

Pump Capacity: 5,256,000 gal/yearLimited Throughput: 10,000 gal/monthLimited Throughput: 120,000 gal/year

PollutantHAP

%VOC3Emission Factor

(lb/1,000 gal)2

Hourly Emission Rate

(lb/hr)Unrestricted

PTE (tpy)Limited PTE

(tpy)VOC -- 11.7 7.02 30.7 0.702Hexane 4.4% 0.309 1.35 0.0309Benzene 2.2% 0.154 0.676 0.0154Toluene 4.0% 0.281 1.23 0.02812,2,4 Trimethylpentane 2.6% 0.183 0.799 0.0183Xylene 1.5% 0.105 0.461 0.0105Ethylbenzene 0.5% 0.0351 0.154 0.00351Total HAPs 11.0% 0.772 3.38 0.07721 - Assume 100 revolutions per minute as maximum pump capacity

Gasoline HAP Speciation

Minimum Arithmetic Average MaximumHexane 0.3% 1.6% 4.4%Benzene 0.2% 0.9% 2.2%Toluene 0.4% 1.3% 4.0%2,2,4 Trimethylpentane 0.03% 0.8% 2.6%Xylene 0.05% 0.5% 1.5%Ethylbenzene 0.03% 0.1% 0.5%Total HAPs 2% 4.8% 11.0%

2 - HAP emissions are calculated based on VOC emissions from Tanks 4.09d and maximum HAP:VOC ratios from USEPA's Gasoline Distribution Industry (Stage I) - Background Information for Proposed Standards (EPA-453/R-94-002a, January 1994).

HAP to VOC RATIO (wt%)1

1 - From USEPA's Gasoline Distribution Industry (Stage I) - Background Information for Proposed Standards (EPA-453/R-94-002a, January 1994).

Pollutant

2 - VOC emissions are calculated based on the vehicle refueling operation (uncontrolled displacement losses and spillage) from AP-42 Table 5.2-7 Evaporative emissions from gasoline service station operations.2 - HAP emissions are calculated based on VOC emissions from Tanks 4.09d and maximum HAP:VOC ratios from USEPA's Gasoline Distribution Industry (Stage I) - Background Information for Proposed Standards (EPA-453/R-94-002a, January 1994).

Facility-Wide Potential to Emit - Boiler Make-Up Air HeaterGreen Plains Otter Tail, LLCFergus Falls, MN

Boiler Make-Up Air Heater Capacity: 5.06 MMBtu/hrOperating Hours: 8,760


PM 7.6 7.45E-03 0.038 8,760 0.17PM10 7.6 7.45E-03 0.038 8,760 0.17PM2.5 7.6 7.45E-03 0.038 8,760 0.17CO 46 0.045 0.23 8,760 1.00NOx 51 0.05 0.25 8,760 1.11SO2 0.6 5.88E-04 2.98E-03 8,760 0.01VOC 5.5 0.01 0.027 8,760 0.12CO2 -- 116.98 592.11 8,760 2,593CH4 -- 2.20E-03 0.011 8,760 0.05N2O -- 2.20E-04 1.12E-03 8,760 4.89E-03CO2e2 -- 2,596Ammonia -- 3.14E-03 0.0159 8,760 0.072-Methylnaphthalene 2.40E-05 2.35E-08 1.19E-07 8,760 5.22E-073-Methylchloranthrene 1.80E-06 1.76E-09 8.93E-09 8,760 3.91E-087,12-Dimethylbenz(a)anthracene 1.60E-05 1.57E-08 7.94E-08 8,760 3.48E-07Acenaphthene 1.80E-06 1.76E-09 8.93E-09 8,760 3.91E-08Acenaphthylene 1.80E-06 1.76E-09 8.93E-09 8,760 3.91E-08Anthracene 2.40E-06 2.35E-09 1.19E-08 8,760 5.22E-08Arsenic 2.00E-04 1.96E-07 9.93E-07 8,760 4.35E-06Benz(a)anthracene 1.80E-06 1.76E-09 8.93E-09 8,760 3.91E-08Benzene 2.10E-03 2.06E-06 1.04E-05 8,760 4.56E-05Benzo(a)pyrene 1.20E-06 1.18E-09 5.96E-09 8,760 2.61E-08Benzo(b)fluoranthene 1.80E-06 1.76E-09 8.93E-09 8,760 3.91E-08Benzo(g,h,i)perylene 1.20E-06 1.18E-09 5.96E-09 8,760 2.61E-08Benzo(k)fluoranthene 1.80E-06 1.76E-09 8.93E-09 8,760 3.91E-08Beryllium 1.20E-05 1.18E-08 5.96E-08 8,760 2.61E-07Cadmium 1.10E-03 1.08E-06 5.46E-06 8,760 2.39E-05Chromium 1.40E-03 1.37E-06 6.95E-06 8,760 3.04E-05Chrysene 1.80E-06 1.76E-09 8.93E-09 8,760 3.91E-08Cobalt 8.40E-05 8.24E-08 4.17E-07 8,760 1.83E-06Dibenzo(a,h)anthracene 1.20E-06 1.18E-09 5.96E-09 8,760 2.61E-08Dichlorobenzene 1.20E-03 1.18E-06 5.96E-06 8,760 2.61E-05Fluoranthene 3.00E-06 2.94E-09 1.49E-08 8,760 6.52E-08Fluorene 2.80E-06 2.75E-09 1.39E-08 8,760 6.09E-08Formaldehyde 7.50E-02 7.35E-05 3.72E-04 8,760 1.63E-03Hexane 1.80 1.76E-03 0.0089 8,760 0.04Indeno(1,2,3-cd)pyrene 1.80E-06 1.76E-09 8.93E-09 8,760 3.91E-08Lead 5.00E-04 4.90E-07 2.48E-06 8,760 1.09E-05Manganese 3.80E-04 3.73E-07 1.89E-06 8,760 8.26E-06Mercury 2.60E-04 2.55E-07 1.29E-06 8,760 5.65E-06Naphthalene 6.10E-04 5.98E-07 3.03E-06 8,760 1.33E-05Nickel 2.10E-03 2.06E-06 1.04E-05 8,760 4.56E-05Phenanthrene 1.70E-05 1.67E-08 8.44E-08 8,760 3.70E-07Pyrene 5.00E-06 4.90E-09 2.48E-08 8,760 1.09E-07Selenium 2.40E-05 2.35E-08 1.19E-07 8,760 5.22E-07Toluene 3.40E-03 3.33E-06 1.69E-05 8,760 7.39E-05Total Polycyclic Organic Matter (POM) 3.46E-06 1.52E-05Total HAPs 9.37E-03 4.10E-02

4 - GHG Emission Factors are from 40 CFR 98 Subpart C Tables C-1 and C-2.

2 - Emission factors for natural gas combustion are from Tables 1.4-1, 1.4-2, 1.4-3 and 1.4-4 of AP-42.


PollutantEmission Factor1,2

(lb/MMscf)Emission Factor3,4

(lb/MMBtu)Emission Rate

(lb/hr) Operating HoursPotential

Emissions (tpy)

3 - Emission factors were converted from lb/MMscf to lb/MMBtu using a higher heating value of 1,020 Btu/scf (per footnote "a" of Table 1.4-1).

Facility-Wide Potential to Emit - Insignificant Activities, Thin Stillage LoadoutGreen Plains Otter Tail, LLCFergus Falls, MN

Truck Loading

Where:S = Saturation factor from Table 5.2-1: 0.6 dimensionlessP = True vapor pressure of liquid loaded: 0.1387 psiaM = Molecular weight of vapors: 18.85 lb/lb-moleT = Temperature of bulk liquid loaded: 511.21 °RLL = Loading loss for liquid loaded: 0.0382 lb-VOC/1,000-gal

Loading Vehicle Units ValuesMax. Loading Rate1 gal/hr 24,300Volume Loaded2 gal/yr 729,000

Tank Capacity3 gal 145,800Annual Number of Tanks Unloaded per year 5

Loading Loss lb-VOC/1000-gal 0.04Emission Rate lb/hr 0.93Potential Emissions lb/yr 27.87Potential Emissions tpy 0.011 - Max loading rate based on maximum pump capacity.2 - Conservativley assumed 5 tank volumes unloaded annually.3 - Based on AST permit work.

Note: HAP in corn thin stillage are assumed to be negligible. True vapor pressure, and

molecular weight of vapors based on Tanks 4.09d assuming 97% water and 3% ethanol as

worst case composition. Temperature is based on Fargo, ND met data from Tanks 4.09d.

Note: Thin Stillage Loadout is considered insignificant activity because the potential emission rate

(27.87 lb/yr) is less than the insignifiacnt activity threshold (2,000 lb/yr) pursuant to Minn. R.

7007.1300 Subpart 3(I)(2).

Emissions calculated using the AP-42 equation for loading petroleum liquid, Eq. 1, Chapter 5.2, June 2008.

𝐿𝐿 = 12.46 ∗ 𝑆 ∗ 𝑃 ∗𝑀

𝑇

Facility-Wide Potential to Emit - Insignificant Activities, Corn Oil and Syrup TanksGreen Plains Otter Tail, LLCFergus Falls, MN

VOC emissions calculated using USEPA's TANKS 4.09d. See attached output. HAP in corn oil are assumed to be negligible.

Undenatured Ethanol Production 65,000,000 (gal/yr)Corn Throughput 24,253,731 (bu/yr)Corn Oil Yield1

1,616,915 (gal/yr)1 - assume corn oil yield is 0.5 lb/bu corn and 7.5 lb/gal

Tank TotalCapacity Throughput1 VOC VOC

Tank ID Contents (gallons) (gal/yr) Turnovers (lb/yr) (tpy)Corn Oil Tank Corn Oil 28,333 1,616,915 57 24.68 0.01Corn Syrup Retention Tank Corn Syrup 34,200 1,616,915 47 27.64 0.01Corn Syrup Tank Corn Syrup 134,800 1,616,915 12 40.69 0.021 - Conservatively assume maximum corn oil yield based on corn throughput for all tanks.

Note: Corn Oil Tank, Corn Syrup Retention Tank, and Corn Syrup Tank are considered insignificant activity because

the potential emission rates (24.68, 27.64, 40.69 lb/yr respectively) are less than the insignificant activity threshold

(2,000 lb/yr) pursuant to Minn. R. 7007.1300 Subpart 3(I)(2).

Facility-Wide Potential to Emit - Insignificant Activities, HeatersGreen Plains Otter Tail, LLCFergus Falls, MN

Process Building Steam/NG Heater 1 Natural Gas / Steam2 PM10 7.50E-03 0.14SO2 5.88E-04 0.14CO 0.039 0.14PM 7.50E-03 0.14

VOC 0.005 0.14CO2e 117.07 0.14NOx 0.092 0.14

Dryer Building Steam/NG Heater 1 - 5 Natural Gas / Steam2 PM10 7.50E-03 0.14SO2 5.88E-04 0.14

Emission calculations are for each unit CO 0.039 0.14PM 7.50E-03 0.14

VOC 0.005 0.14CO2e 117.07 0.14NOx 0.092 0.14

Portable Kerosene Space Heater 1 Kerosene3 PM10 0.024 0.21SO2 0.051 0.21CO 0.036 0.21PM 0.024 0.21

VOC 3.97E-03 0.21CO2e 153.57 0.21NOx 0.14 0.21

Portable Kerosene Space Heater 2 Kerosene3 PM10 0.024 0.20SO2 0.051 0.20CO 0.036 0.20PM 0.024 0.20

VOC 3.97E-03 0.20CO2e 153.57 0.20NOx 0.14 0.20

1 - Natural Gas emission factors are based on AP-42 Chapter 1.4 assuming 1,020 btu/scf.2 - Steam / Natural Gas Space Heaters are assumed to combust natural gas year-round.3 - Kerosene emission factors are based on the Distillate Oil emission factors from AP-42 Chapter 1.3.

Unit Description Description Pollutant

Emission Factor1,2

(lb/MMBtu)Throughput(MMBtu/hr)

1.05E-03 4.60E-03 1 Yes8.24E-05 3.61E-04 1 Yes

0.01 0.02 2 Yes1.05E-03 4.60E-03 1 Yes7.55E-04 3.31E-03 1 Yes

16.39 71.79 1000 Yes0.01 0.06 1 Yes

1.05E-03 4.60E-03 1 Yes8.24E-05 3.61E-04 1 Yes

0.01 0.02 2 Yes1.05E-03 4.60E-03 1 Yes7.55E-04 3.31E-03 1 Yes

16.39 71.79 1000 Yes0.01 0.06 1 Yes

4.95E-03 0.02 1 Yes0.01 0.05 1 Yes0.01 0.03 2 Yes

4.95E-03 0.02 1 Yes8.34E-04 3.65E-03 1 Yes

32.25 141.26 1000 Yes0.03 0.13 1 Yes

4.71E-03 0.02 1 Yes0.01 0.04 1 Yes0.01 0.03 2 Yes

4.71E-03 0.02 1 Yes7.94E-04 3.48E-03 1 Yes

30.71 134.53 1000 Yes0.03 0.13 1 Yes

Potential Emissions

(tpy)

Minn. R. 7007.1300, subp. 3(F) Thresholds

(tpy)Insignificant Activity Under MN R.

7007.1300 Subpart 3(F)?

Emission Rate

(lb/hr)

Facility-Wide Potential to Emit - Insignificant Activities, Yeast Mix TankGreen Plains Otter Tail, LLCFergus Falls, MN

GPOT - Yeast Usage 2014-2018

Yeast - TotalUndenatured Ethanol

Production Yeast - Totallbs. Tons lbs. (gross) lbs. (DM)* Tons Tons MMGal Tons/MMGal

2014 44,055.90 22.03 22.03 43.056 0.5122015 29,458.80 14.73 37,866.14 8,330.55 4.17 18.89 48.208 0.3922016 33,516.00 16.76 38,278.48 8,421.27 4.21 20.97 49.477 0.4242017 19,139.40 9.57 99,258.58 21,836.89 10.92 20.49 49.813 0.4112018 33,229.77 16.61 47,070.22 10,355.45 5.18 21.79 42.990 0.507

5-Year Maximum: 22.0 49.8 0.512* Dry Matter content on SDS states between 20 and 24% used 22%

Yeast Mix Tank VOC 5.0 33.25 166.27 0.08 1 Yes1 - Emission factor from Table 9.13.4-1 of AP-42 for Pitch.

Yeast Mix Tank VOC 2.1 487 1,009 0.50 1 Yes1 - Emission factor from Table 4-2 of the Background Document for Chapter 9.13 of AP-42 for Pitch (0.0025 lb/gal tank capacity) and uses the 829 gallon capacity of the Yeast Mix Tank.2 - Yeast Mix Tank is only used for hydrating the yeast and the addition of nutrients which is done once for each fermentation batch. Throughput is number of batches per year based on one batch every 18 hours at 65 mmgal permitted ethanol production throughput.


(tpy)

Insignificant Activity Under MN R. 7007.1300 Subpart

3(F)?

Unit Description Pollutant

Emission Factor1

(lb/batch)Throughput2

(batches/yr)

Emission Rate

(lb/yr)

Potential Emissions

(tpy)


(tpy)

Insignificant Activity Under MN R. 7007.1300 Subpart

3(F)?

2 - Yeast Mix Tank is only used for hydrating the yeast and the addition of nutrients. Throughput is the total weight of yeast pitched on a dry-basis as no yeast is produced in the tank and then scaled for 65 mmgal permitted ethanol production throughput as calculated above.

Yeast - Dry Yeast - Liquid

Unit Description Pollutant

Emission Factor1

(lb/ton)Throughput2

(ton/yr)

Emission Rate

(lb/yr)

Potential Emissions

(tpy)

Green Plains Otter Tail LLC Permit No. 11100077‐101 Technical Support Document Attachment 2 Subject Item Inventory and Facility Requirements

Agency Interest Name Subject Item ID Subject Item Designation Subject Item Description

Green Plains Otter TailLLC

ACTV2 Null All IAs

AISI97465 Null Null

COMG6 NullIndoor Grain ReceivingLimits

EQUI1 EU010 Grinder Surge Bin

EQUI4 EU031 Truck Ethanol Loadout

EQUI6 EU056 Silo #3 Conveyer

EQUI8 EU058 Corn Storage Silo #1







EQUI18 EU027 Emergency Generator

EQUI20 EU001Corn Dump Pit/Auger 1(Captured)

EQUI21 EU002 Corn Conveyor 1

EQUI22 EU003 Corn Elevator 1

List of SIs

Agency Interest: Green Plains Otter Tail LLCAgency Interest ID: 97465Activity: IND20170003 (Part 70 Reissuance)

Details for:SI Category: NoneSI Type: All

Agency Interest Name Subject Item ID Subject Item Designation Subject Item DescriptionGreen Plains Otter TailLLC



EQUI23 EU004Corn Dump Pit/Auger 2(Captured)



EQUI26 EU007 Transfer Conveyor 1

EQUI27 EU008 Scalper

EQUI29 EU011 Hammermill 1


EQUI32 EU014 Bulkweigher

EQUI33 EU015 DDGS Conveyor

EQUI34 EU016DDGS Load Spout(Truck/Rail, Captured)

EQUI35 EU028 Boiler 1

EQUI36 EU029 Boiler 2

EQUI38 EU033 Yeast Tank

EQUI39 EU034 Fermenter 1



List of SIs







EQUI43 EU038 Beerwell

EQUI44 EU039 Liquefaction Tank

EQUI45 EU040 Beer Stripper

EQUI46 EU041 Side Stripper

EQUI47 EU042 Rectifier

EQUI48 EU043 Molecular Sieve (2 bottles)

EQUI49 EU044 Evaporator

EQUI50 EU045 Centrifuge 1




EQUI55 EU050DDGS Dryer withMulticlone

EQUI56 EU051 DDGS Cooler


EQUI58 TK001 200 Proof Tank

List of SIs







EQUI60 TK003 Denaturant Storage Tank

EQUI61 TK004 Denatured Ethanol Tank 1

EQUI62 TK005 Denatured Ethanol Tank 2

EQUI108 EU026 Fire Pump

EQUI109 EU049 Centrate Tank

EQUI110 Null Slurry Tank

EQUI111 Null Process Condensate Tank

EQUI112 Null Whole Stillage Tank

EQUI113 Null Thin Stillage Tank

EQUI114 EU009 Silo #1 and Silo #2 Reclaim

EQUI115 Null Corn Elevator 3

EQUI116 Null Rail Ethanol Loadout

EQUI117 NullCorn Dump Pit/Auger 1(Uncaptured)


EQUI119 Null Hammermill Conveyor 1

List of SIs








EQUI122 Null Flour Conveyor 1



EQUI125 NullScrew Conveyor, RecycleSolids

EQUI126 Null Flour Elevator

EQUI127 Null Syrup Tank

EQUI128 Null Corn Syrup Retention Tank

EQUI129 Null DDGS Storage Conveyor 1


EQUI131 Null DDGS Storage Elevator



EQUI134 NullDDGS Reclaim via FrontEnd Loader

EQUI135 Null DDGS Reclaim Dump Pit

List of SIs




EQUI134 NullDDGS Reclaim via FrontEnd Loader

EQUI135 Null DDGS Reclaim Dump Pit

EQUI136 NullDDGS Storage ReclaimConveyor

EQUI137 Null DDGS Reclaim Elevator

EQUI138 NullDDGS Load Spout(Truck/Rail, Uncaptured)

EQUI139 NullBeer Column VentCondenser

EQUI140 Null Reflux Condenser

EQUI141 Null Reflux Vent Condenser

EQUI142 Null Superheater

EQUI143 Null Regen Preheater

EQUI144 NullDD&E CondensatePreheater

EQUI145 Null Acid Column

EQUI146 Null Product Condenser

EQUI147 Null Regen Receiver

EQUI148 NullEvaporator CondensateReceiver

EQUI149 Null Evaporator Condenser

EQUI150 NullEvaporator VacuumReceiver

EQUI151 Null Gasoline Tank (1,000 gal)

List of SIs





EQUI151 Null Gasoline Tank (1,000 gal)

EQUI152 Null Gasoline Dispensing

EQUI166 EU057 Silo #3 Reclaim



EQUI169 Null Boiler Make-Up Air Heater

FUGI7 EU017 Cooling Tower Cell 1



FUGI11 FS007Grain Receiving andConveying at Temporary S..

FUGI15 FS005 Equipment Leaks

FUGI16 FS006 Wetcake -AOS

FUGI17 FS004 Paved Roads

FUGI18 Null Unpaved Roads

FUGI19 NullGrain Reclaim Operationsat Temporary Storage Fac..

FUGI20 NullWind Erosion at TemporaryStorage Facility

STRU7 SV001 Grain Receiving withBaghouse

List of SIs




FUGI20 NullWind Erosion at TemporaryStorage Facility

STRU7 SV001Grain Receiving withBaghouse

STRU22 SV008Hammermill withBaghouse

STRU23 SV011DDGS Loadout withBaghouse

STRU24 SV026Fermentation with CO2Scrubber

STRU25 SV027Distillation (Vent Gas)Scrubber

STRU26 SV028DDGS with ThermalOxidizer

STRU27 SV036 Grain Bin #1





STRU32 SV020 Fire Pump

STRU33 SV022 Boiler 1

STRU34 SV023 Boiler 2

STRU35 SV025 Loadout Flare

STRU36 SV034 Emergency Generator


List of SIs






STRU41 NullGrain Receiving/DDGSLoadout Building (BLD_1)

STRU42 NullDDGS Storage Building(BLD_2)

STRU43 NullMaintenance Building(BLD_3)

STRU44 Null Dryer Building (BLD_4)

STRU45 Null Boiler Building (BLD_5)

STRU46 Null DD&E Building (BLD_6)

STRU47 NullDD&E Building (BLD_6, Tier2)

STRU48 NullAdministration Building(BLD_7)

STRU49 Null Cooling Tower (BLD_8)

STRU50 Null WDGS Building (BLD_9)

STRU51 NullMain Process Building(BLD_10)

STRU52 NullMain Process Building(BLD_10, Tier 2)

STRU53 Null MCC Building (BLD_11)

STRU54 NullCooling Tower PumpBuilding (BLD_12)

STRU55 NullFire Pump Building(BLD_13)

STRU56 Null Main Process Building(BLD_14)

List of SIs






STRU57 Null Grain Silo #1

STRU58 Null Grain Silo #2

STRU59 Null Water Tank

STRU60 Null Beerwell

STRU61 Null Fermenter #4 (TANK5)




STRU65 NullYeast Propagation Tank(TANK9)

STRU66 Null Syrup Tank (TANK10)

STRU67 NullThin Stillage Tank(TANK11)

STRU68 NullProcess Condensate Tank(TANK12)

STRU69 NullWhole Stillage Tank(TANK13)

STRU70 Null TK-6101 (TANK14)



List of SIs








STRU75 Null Liquefaction Tank

STRU76 Null Grain Silo 3



STRU79 Null RTO Bypass Stack

STRU80 NullDDGS Cooler BaghouseStack

TFAC2 11100077 Green Plains Otter Tail LLC

TREA7 CE001 Grain Receiving Baghouse

TREA8 CE008 Hammermill Baghouse

TREA11 CE011 DDGS Loadout Baghouse

TREA21 CE026 Flaring

TREA22 CE027CO2 (Fermentation)Scrubber

TREA23 CE028Vent Gas (Distillation)Scrubber

TREA25 CE030 Thermal Oxidizer

List of SIs




TREA23 CE028Vent Gas (Distillation)Scrubber

TREA25 CE030 Thermal Oxidizer

TREA39 Null DDGS Cooler Baghouse

List of SIs



Agency Interest Na.. Activity ID Subject Ite..Subject Item Type Description Subject Item ID Subject Ite..Subject Ite..Status Desc..Sub Attribute Description

Green Plains OtterTail LLC

IND20170003 Activity Insignificant Air Emissions Activity ACTV2 Null All IAs Active /Existing

Minn. R. 7007.1300, subp.3(B)(2)

Minn. R. 7007.1300, subp. 3(D)

Minn. R. 7007.1300, subp. 3(E)

Minn. R. 7007.1300, subp. 3(F)

Minn. R. 7007.1300, subp. 3(G)

Minn. R. 7007.1300, subp. 4

Insignificant air emissions activity


Details for:SI Category: ActivitySI Type: Insignificant Air Emissions Activity

Agency Interest Name Subject Item ID Subject Item DesignationSubject Item Description Group Member ID (padded)

Green Plains Otter TailLLC

COMG6 Null Indoor Grain ReceivingLimits

EQUI20

EQUI23

EQUI117

EQUI118

Component Group (Members)

Agency Interest: Green Plains Otter Tail LLCAgency Interest ID: 97465Activity: None (Part 70 Reissuance)

Details for:SI Category: Component GroupSI Type: Air Component Group

Subject ItemCategory Description

Subject Item TypeDescription Subject Item ID

Subject ItemDesignation Subject Item Description Pollutant

Potential (lbs/hr)


(tons/yr)

Potential Limited

(tons/yr)

Actual Emissions

(tons/yr)

Equipment Aboveground StorageTank

EQUI58 TK001 200 Proof Tank Volatile Organic Compoun..

EQUI59 TK002 200 Proof Tank Volatile Organic Compoun..

EQUI60 TK003 Denaturant Storage Tank Benzene

HAPs - Total

Hexane

Toluene

Volatile Organic Compoun..

EQUI61 TK004 Denatured Ethanol Tank 1 Benzene

HAPs - Total

Hexane

Toluene


EQUI62 TK005 Denatured Ethanol Tank 2 Benzene

HAPs - Total

Hexane

Toluene


Boiler EQUI35 EU028 Boiler 1 1,4-Dichlorobenzene (par..

2-Methylnaphthalene

3-Methylcholanthrene

7,12-Dimethylbenz[a]ant..

Acenaphthene

Acenaphthylene

Anthracene

Arsenic compounds

Benzene

Benzo(a)anthracene

Benzo(b)fluoranthene

Benzo(ghi)perylene

Benzo(k)fluoranthene

Benzo[a]pyrene

Beryllium Compounds

Cadmium compounds

Carbon Dioxide

Carbon Dioxide Equivalent

Carbon Monoxide

Chromium compounds

Chrysene

Cobalt compounds

Dibenz[a,h]anthracene

Fluoranthene

Fluorene

Formaldehyde

HAPs - Total

Hexane

Indeno(1,2,3-cd)pyrene

Lead

Manganese compounds

Mercury Compounds

Methane

Naphthalene

Nickel compounds

Nitrogen Oxides

Nitrous Oxide

Particulate Matter

Phenanthrene

PM < 2.5 micron

PM < 10 micron

Polycyclic organic matter

Pyrene

Selenium compounds

Sulfur Dioxide

Toluene


EQUI36 EU029 Boiler 2 1,4-Dichlorobenzene (par..

0.1710.1710.03890.1710.1710.0389

0.5050.01520.1470.1780.0162

0.5050.01520.1470.1780.0162

0.1150.003460.03350.04060.00369

0.1660.0009330.009020.0109

0.000995

0.1660.0009330.009020.0109

0.000995

0.0380.0002130.002060.0025

0.000227

0.1660.0009330.009020.0109

0.000995

0.1660.0009330.009020.0109

0.000995

0.0380.0002130.002060.0025

0.000227

4.420.001350.239

9.52e-061.98e-060.000277

3.13.1

6.75e-063.1

0.53557.5

0.0008330.000242

2.680.0001030.0001510.0001987.14e-070.7140.7490.02981.11e-061.19e-064.76e-073.33e-057.14e-070.000555

33.256,30056,100

0.0004364.76e-064.76e-077.14e-074.76e-077.14e-077.14e-070.0008337.94e-059.52e-077.14e-077.14e-076.35e-067.14e-079.52e-060.000476

4.420.001350.239

9.52e-061.98e-060.000277

3.13.1

6.75e-063.1

0.53557.5

0.0008330.000242

2.680.0001030.0001510.0001987.14e-070.7140.7490.02981.11e-061.19e-064.76e-073.33e-057.14e-070.000555

33.256,30056,100

0.0004364.76e-064.76e-077.14e-074.76e-077.14e-077.14e-070.0008337.94e-059.52e-077.14e-077.14e-076.35e-067.14e-079.52e-060.000476

1.010.0003080.05452.17e-064.53e-076.32e-050.7070.707

1.54e-060.7070.12213.1

0.000195.53e-050.611

2.36e-053.44e-054.53e-051.63e-070.1630.171

0.006792.54e-072.72e-071.09e-077.61e-061.63e-070.000127

7.5712,90012,8009.96e-051.09e-061.09e-071.63e-071.09e-071.63e-071.63e-070.000191.81e-052.17e-071.63e-071.63e-071.45e-061.63e-072.17e-060.000109

PTE by subject item

Agency Interest: NoneAgency Interest ID: 97465Activity: None (Part 70 Reissuance)

Details for:SI Category: AllSI Type: All




Potential (lbs/hr)


(tons/yr)

Potential Limited

(tons/yr)

Actual Emissions

(tons/yr)

Equipment BoilerEQUI35 EU028 Boiler 1 Volatile Organic Compoun..EQUI36 EU029 Boiler 2 1,4-Dichlorobenzene (par..

2-Methylnaphthalene



Acenaphthene

Acenaphthylene

Anthracene

Arsenic compounds

Benzene

Benzo(a)anthracene


Benzo(ghi)perylene


Benzo[a]pyrene

Beryllium Compounds

Cadmium compounds

Carbon Dioxide


Carbon Monoxide

Chromium compounds

Chrysene

Cobalt compounds


Fluoranthene

Fluorene

Formaldehyde

HAPs - Total

Hexane


Lead

Manganese compounds

Mercury Compounds

Methane

Naphthalene

Nickel compounds

Nitrogen Oxides

Nitrous Oxide

Particulate Matter

Phenanthrene

PM < 2.5 micron

PM < 10 micron


Pyrene

Selenium compounds

Sulfur Dioxide

Toluene


Conveyor EQUI129 Null DDGS Storage Conveyor 1 Particulate Matter

PM < 2.5 micron

PM < 10 micron

EQUI130 Null DDGS Storage Conveyor 2 Particulate Matter

PM < 2.5 micron

PM < 10 micron


PM < 2.5 micron

PM < 10 micron


PM < 2.5 micron

PM < 10 micron

Dryer/Oven, unknownfiring method

EQUI55 EU050 DDGS Dryer withMulticlone

1,4-Dichlorobenzene (par..

2-Methylnaphthalene



Acenaphthene

Acenaphthylene

4.420.001350.239

9.52e-061.98e-060.000277

3.13.1

6.75e-063.1

0.53557.5

0.0008330.000242

2.680.0001030.0001510.0001987.14e-070.7140.7490.02981.11e-061.19e-064.76e-073.33e-057.14e-070.000555

33.256,30056,100

0.0004364.76e-064.76e-077.14e-074.76e-077.14e-077.14e-070.0008337.94e-059.52e-077.14e-077.14e-076.35e-067.14e-079.52e-060.000476

4.420.001350.239

9.52e-061.98e-060.000277

3.13.1

6.75e-063.1

0.53557.5

0.0008330.000242

2.680.0001030.0001510.0001987.14e-070.7140.7490.02981.11e-061.19e-064.76e-073.33e-057.14e-070.000555

33.256,30056,100

0.0004364.76e-064.76e-077.14e-074.76e-077.14e-077.14e-070.0008337.94e-059.52e-077.14e-077.14e-076.35e-067.14e-079.52e-060.000476

1.010.0003080.05452.17e-064.53e-076.32e-050.7070.707

1.54e-060.7070.12213.1

0.000195.53e-050.611

2.36e-053.44e-054.53e-051.63e-070.1630.171

0.006792.54e-072.72e-071.09e-077.61e-061.63e-070.000127

7.5712,90012,8009.96e-051.09e-061.09e-071.63e-071.09e-071.63e-071.63e-070.000191.81e-052.17e-071.63e-071.63e-071.45e-061.63e-072.17e-060.000109

0.08490.08490.35

0.08490.08490.35

0.0240.0240.099

0.08490.08490.35

0.08490.08490.35

0.0240.0240.099

0.08490.08490.35

0.08490.08490.35

0.0240.0240.099

0.08490.08490.35

0.08490.08490.35

0.0240.0240.099

6.96e-076.18e-066.96e-079.28e-060.000464

6.96e-076.18e-066.96e-079.28e-060.000464

1.59e-071.41e-061.59e-072.12e-060.000106

PTE by subject item






Potential (lbs/hr)


(tons/yr)

Potential Limited

(tons/yr)

Actual Emissions

(tons/yr)

Equipment Dryer/Oven, unknownfiring method

EQUI55 EU050 DDGS Dryer withMulticlone

Acenaphthene

Acenaphthylene

Anthracene

Arsenic compounds

Benzene

Benzo(a)anthracene


Benzo(ghi)perylene


Benzo[a]pyrene

Beryllium Compounds

Cadmium compounds

Carbon Dioxide


Chromium compounds

Chrysene

Cobalt compounds


Fluoranthene

Fluorene

Hexane


Lead

Manganese compounds

Mercury Compounds

Methane

Naphthalene

Nickel compounds

Nitrous Oxide

Phenanthrene


Pyrene

Selenium compounds

Toluene

Elevator EQUI131 Null DDGS Storage Elevator Particulate Matter

PM < 2.5 micron

PM < 10 micron

Loading-UnloadingEquipment

EQUI4 EU031 Truck Ethanol Loadout Benzene

HAPs - Total

Hexane

Toluene


EQUI116 Null Rail Ethanol Loadout Benzene

HAPs - Total

Hexane

Toluene


EQUI138 Null DDGS Load Spout(Truck/Rail, Uncaptured)

Particulate Matter

PM < 2.5 micron

PM < 10 micron

Material HandlingEquipment

EQUI117 Null Corn Dump Pit/Auger 1(Uncaptured)

Particulate Matter

PM < 2.5 micron

PM < 10 micron

EQUI118 Null Corn Dump Pit/Auger 2(Uncaptured)

Particulate Matter

PM < 2.5 micron

PM < 10 micron

EQUI134 Null DDGS Reclaim via FrontEnd Loader

Particulate Matter

PM < 2.5 micron

PM < 10 micron

EQUI135 Null DDGS Reclaim Dump Pit Particulate Matter

PM < 2.5 micron

PM < 10 micron

Other Combustion EQUI169 Null Boiler Make-Up Air Heater1,4-Dichlorobenzene (par..

2-Methylnaphthalene



0.001319.28e-061.93e-060.000276.57e-060.0867

0.0008120.0002360.8670.0001

0.0001470.0001936.96e-070.696

1.08e-061.16e-064.64e-073.25e-056.96e-070.00054146,10046,100

0.0004254.64e-064.64e-076.96e-074.64e-076.96e-076.96e-070.0008127.73e-059.28e-076.96e-076.96e-076.18e-066.96e-079.28e-060.000464

0.001319.28e-061.93e-060.000276.57e-060.0867

0.0008120.0002360.8670.0001

0.0001470.0001936.96e-070.696

1.08e-061.16e-064.64e-073.25e-056.96e-070.00054146,10046,100

0.0004254.64e-064.64e-076.96e-074.64e-076.96e-076.96e-070.0008127.73e-059.28e-076.96e-076.96e-076.18e-066.96e-079.28e-060.000464

0.00032.12e-064.41e-076.16e-051.5e-060.0198

0.0001855.38e-050.198

2.29e-053.35e-054.41e-051.59e-070.159

2.47e-072.65e-071.06e-077.41e-061.59e-070.00012410,50010,5009.71e-051.06e-061.06e-071.59e-071.06e-071.59e-071.59e-070.0001851.76e-052.12e-071.59e-071.59e-071.41e-061.59e-072.12e-060.000106

0.08490.08490.35

0.08490.08490.35

0.0240.0240.099

6.810.2041.982.4

0.218

2086.2460.373.26.66

11.10.3323.213.9

0.354

00000

9.890.2972.873.480.316

0.5830.01750.1690.2050.0186

0.08490.08490.35

0.08490.08490.35

0.1440.1440.594

1.760.2957.17

1.760.2957.17

3.130.52412.8

1.760.2957.17

1.760.2957.17

3.130.52412.8

0.08490.08490.35

0.08490.08490.35

0.1440.1440.594

0.08490.08490.35

0.08490.08490.35

0.1440.1440.594

3.91e-085.22e-072.61e-05

3.91e-085.22e-072.61e-05

8.93e-091.19e-075.96e-06

PTE by subject item






Potential (lbs/hr)


(tons/yr)

Potential Limited

(tons/yr)

Actual Emissions

(tons/yr)

Equipment Other Combustion EQUI169 Null Boiler Make-Up Air Heater3-Methylcholanthrene


Acenaphthene

Acenaphthylene

Anthracene

Arsenic compounds

Benzene

Benzo(a)anthracene


Benzo(ghi)perylene


Benzo[a]pyrene

Beryllium Compounds

Cadmium compounds

Carbon Dioxide


Carbon Monoxide

Chromium compounds

Chrysene

Cobalt compounds


Fluoranthene

Fluorene

Formaldehyde

HAPs - Total

Hexane


Lead

Manganese compounds

Mercury Compounds

Methane

Naphthalene

Nickel compounds

Nitrogen Oxides

Nitrous Oxide

Particulate Matter

Phenanthrene

PM < 2.5 micron

PM < 10 micron


Pyrene

Selenium compounds

Sulfur Dioxide

Toluene


Other Emission Unit EQUI151 Null Gasoline Tank (1,000 gal) 2,2,4-trimethylpentane

Benzene

Ethylbenzene

HAPs - Total

Hexane

Toluene


Xylenes, Total

EQUI152 Null Gasoline Dispensing 2,2,4-trimethylpentane

Benzene

Ethylbenzene

HAPs - Total

Hexane

Toluene


Xylenes, Total

Reciprocating IC EngineEQUI18 EU027 Emergency Generator Acenaphthene

Acenaphthylene

Acetaldehyde

Acrolein

Anthracene

0.127.39e-050.013

5.22e-071.09e-071.52e-050.1650.1653.7e-070.165

0.004891.11

4.56e-051.33e-050.04895.65e-068.26e-061.09e-053.91e-080.03910.041

0.001636.09e-086.52e-082.61e-081.83e-063.91e-083.04e-050.9982,6002,590

2.39e-052.61e-072.61e-083.91e-082.61e-083.91e-083.91e-084.56e-054.35e-065.22e-083.91e-083.91e-083.48e-073.91e-085.22e-072.61e-05

0.127.39e-050.013

5.22e-071.09e-071.52e-050.1650.1653.7e-070.165

0.004891.11

4.56e-051.33e-050.04895.65e-068.26e-061.09e-053.91e-080.03910.041

0.001636.09e-086.52e-082.61e-081.83e-063.91e-083.04e-050.9982,6002,590


0.02731.69e-050.002981.19e-072.48e-083.46e-060.03770.03778.44e-080.03770.001120.253

1.04e-053.03e-060.01121.29e-061.89e-062.48e-068.93e-090.008930.009370.0003721.39e-081.49e-085.96e-094.17e-078.93e-096.95e-060.228593592


0.002660.177

0.007080.007790.0195

0.0008850.003890.0046

0.002660.177

0.007080.007790.0195

0.0008850.003890.0046

0.0006060.04040.001620.001780.004450.0002020.0008890.00105

0.01050.7020.02810.03090.07720.003510.01540.0183

0.46130.71.231.353.380.1540.6760.799

0.1057.020.2810.3090.7720.03510.1540.183

2.34e-057.5e-052.75e-051.39e-05

0.0004110.001310.0004810.000244

9.38e-050.00030.000115.57e-05

PTE by subject item






Potential (lbs/hr)


(tons/yr)

Potential Limited

(tons/yr)

Actual Emissions

(tons/yr)

Equipment Reciprocating IC EngineEQUI18 EU027 Emergency GeneratorAcrolein

Anthracene

Benzene

Benzo(a)anthracene


Benzo(ghi)perylene


Benzo[a]pyrene

Carbon Dioxide


Carbon Monoxide

Chrysene


Fluoranthene

Fluorene

Formaldehyde

HAPs - Total


Methane

Naphthalene

Nitrogen Oxides

Nitrous Oxide

Particulate Matter

Phenanthrene

PM < 2.5 micron

PM < 10 micron


Pyrene

Sulfur Dioxide

Toluene


Xylenes, Total

EQUI108 EU026 Fire Pump 1,3-Butadiene

Acenaphthene

Acenaphthylene

Acetaldehyde

Acrolein

Anthracene

Benzene

Benzo(a)anthracene


Benzo(ghi)perylene


Benzo[a]pyrene

Carbon Dioxide


Carbon Monoxide

Chrysene


Fluoranthene

Fluorene

Formaldehyde

HAPs - Total


Methane

Naphthalene

Nitrogen Oxides

Nitrous Oxide

Particulate Matter

Phenanthrene

PM < 2.5 micron

PM < 10 micron


Pyrene

Sulfur Dioxide

Toluene

0.0005740.29

0.0008360.005161.1e-050.0006290.1030.103

0.0001210.103

0.001976.03

0.0003870.01971.23e-060.004680.0002353.81e-051.2e-051.03e-064.55e-060.403486485

7.65e-076.49e-071.65e-063.3e-061.85e-060.002313.66e-062.34e-057.5e-052.75e-051.39e-05

0.01015.09

0.01460.0904

0.0001930.0111.811.81

0.002131.81

0.0345106

0.006780.345

2.16e-050.082

0.004110.0006670.000211.8e-057.97e-05

7.068,5208,500

1.34e-051.14e-052.9e-055.79e-053.24e-050.04046.41e-050.0004110.001310.0004810.000244

0.00231.16

0.003340.02064.41e-050.002520.4120.412

0.0004860.412

0.0078724.1

0.001550.07874.93e-060.0187

0.0009390.0001524.8e-054.12e-061.82e-05

1.611,9401,940

3.06e-062.59e-066.62e-061.32e-057.4e-060.009231.46e-059.38e-050.00030.000115.57e-05

0.0002290.0228

0.0003290.0003243.85e-060.0001350.01770.01772.37e-050.0177

0.0005321.3

6.83e-050.005323.02e-070.003120.000952.35e-056.13e-064.69e-072.84e-070.119131131

1.51e-071.25e-073.94e-077.98e-081.35e-060.0007511.51e-067.45e-050.0006174.07e-061.14e-063.15e-05

0.004020.4

0.005770.005676.74e-050.002370.3110.311

0.0004150.311

0.0093322.7

0.00120.09335.29e-060.05460.0166

0.0004120.0001078.22e-064.98e-06

2.092,3102,300

2.65e-062.19e-066.9e-061.4e-062.37e-050.01322.64e-050.00130.01087.14e-052e-05

0.000551

0.0009180.09130.001320.001291.54e-050.0005410.0710.071

9.47e-050.071

0.002135.18

0.0002730.02131.21e-060.01250.00389.4e-052.45e-051.88e-061.14e-060.477526525

6.05e-074.99e-071.57e-063.19e-075.41e-060.003

6.02e-060.0002980.002471.63e-054.57e-060.000126

PTE by subject item






Potential (lbs/hr)


(tons/yr)

Potential Limited

(tons/yr)

Actual Emissions

(tons/yr)

Equipment Reciprocating IC EngineEQUI108 EU026 Fire PumpSulfur Dioxide

Toluene


Xylenes, Total

Silo/Bin EQUI8 EU058 Corn Storage Silo #1 Particulate Matter

PM < 2.5 micron

PM < 10 micron

EQUI9 EU059 Corn Storage Silo #2 Particulate Matter

PM < 2.5 micron

PM < 10 micron


PM < 2.5 micron

PM < 10 micron


PM < 2.5 micron

PM < 10 micron


PM < 2.5 micron

PM < 10 micron

Fugitive Cooling Tower FUGI7 EU017 Cooling Tower Cell 1 Particulate Matter

PM < 2.5 micron

PM < 10 micron

FUGI8 EU018 Cooling Tower Cell 2 Particulate Matter

PM < 2.5 micron

PM < 10 micron

FUGI9 EU019 Cooling Tower Cell 3 Particulate Matter

PM < 2.5 micron

PM < 10 micron

Equipment Leaks FUGI15 FS005 Equipment Leaks Acetaldehyde

Acrolein

Benzene

Formaldehyde

HAPs - Total

Hexane

Methanol

Toluene


Fugitive-Other FUGI16 FS006 Wetcake -AOS Acetaldehyde

Acrolein

Formaldehyde

HAPs - Total

Methanol


Material Handling/Transfer/Storage

FUGI11 FS007 Grain Receiving andConveying at TemporaryStorage Facility

Particulate Matter

PM < 2.5 micron

PM < 10 micron

FUGI19 Null Grain Reclaim Operationsat Temporary StorageFacility

Particulate Matter

PM < 2.5 micron

PM < 10 micron

Paved Road FUGI17 FS004 Paved Roads Particulate Matter

PM < 2.5 micron

PM < 10 micron

Piles FUGI20 Null Wind Erosion atTemporary StorageFacility

Particulate Matter

PM < 2.5 micron

PM < 10 micron

Unpaved Roads FUGI18 Null Unpaved Roads Particulate Matter

PM < 2.5 micron

PM < 10 micron

Structure Stack/Vent STRU7 SV001 Grain Receiving withBaghouse

Particulate Matter

PM < 2.5 micron

PM < 10 micron

STRU22 SV008 Hammermill withBaghouse

Particulate Matter

PM < 2.5 micron

PM < 10 micron

STRU23 SV011 DDGS Loadout withBaghouse

Particulate Matter

PM < 2.5 micron

0.0002290.0228

0.000329

0.004020.4

0.00577

0.0009180.09130.00132

0.4280.07471.7

11.62.0246

2.650.46210.5

0.4280.07471.7

11.62.0246

2.650.46210.5

0.4280.07471.7

11.62.0246

2.650.46210.5

0.4280.07471.7

11.62.0246

2.650.46210.5

0.4280.07471.7

11.62.0246

2.650.46210.5

2.20.007713.65

2.20.007713.65

0.5020.001760.834

2.20.007713.65

2.20.007713.65

0.5020.001760.834

2.20.007713.65

2.20.007713.65

0.5020.001760.834

39.30.009550.04110.09230.4910.01480.01020.02180.301

39.30.009550.04110.09230.4910.01480.01020.02180.301

8.980.002180.009370.02110.112

0.003370.002320.004970.0688

3.420.02850.1920.137

0.003420.0228

3.420.02850.1920.137

0.003420.0228

0.7810.006510.04380.0313

0.0007810.00521

0.3080.05191.34

27.44.62120

6.261.0627.3

0.640.09132.13

82.913.4265

5.510.78618.4

1.510.377.54

1.510.377.54

2.80.68614

1.110.1772.21

1.110.1772.21

0.6060.0971.21

0.2350.02350.795

1.170.1173.97

14.31.4348.4

13.913.913.9

5381211,050

3.173.173.17

8.948.948.94

41170.2763

2.042.042.04

1.81.81.8

3.733.7315.4

0.410.410.41

PTE by subject item






Potential (lbs/hr)


(tons/yr)

Potential Limited

(tons/yr)

Actual Emissions

(tons/yr)

Structure Stack/Vent STRU23 SV011 DDGS Loadout withBaghouse

Particulate Matter

PM < 2.5 micron

PM < 10 micron

STRU24 SV026 Fermentation with CO2Scrubber

Acetaldehyde

Acrolein

Carbon Dioxide


Formaldehyde

HAPs - Total

Methanol


STRU25 SV027 Distillation (Vent Gas)Scrubber

Acetaldehyde

Acrolein

Carbon Dioxide


Formaldehyde

HAPs - Total

Methanol


STRU26 SV028 DDGS with ThermalOxidizer

Acetaldehyde

Acrolein

Carbon Monoxide

Formaldehyde

HAPs - Total

Methanol

Nitrogen Oxides

Particulate Matter

PM < 2.5 micron

PM < 10 micron

Sulfur Dioxide


STRU79 Null RTO Bypass Stack Carbon Monoxide

Formaldehyde

Nitrogen Oxides

Particulate Matter

PM < 2.5 micron

PM < 10 micron

Sulfur Dioxide


STRU80 Null DDGS Cooler BaghouseStack

Acetaldehyde

Acrolein

Formaldehyde

HAPs - Total

Methanol

Particulate Matter

PM < 2.5 micron

PM < 10 micron


Treatment 023-Flaring TREA21 CE026 Flaring 1,4-Dichlorobenzene (par..

2-Methylnaphthalene



Acenaphthene

Acenaphthylene

Anthracene

Arsenic compounds

Benzene

Benzo(a)anthracene


Benzo(ghi)perylene


Benzo[a]pyrene

Beryllium Compounds

Cadmium compounds

Carbon Dioxide


1.81.81.8

3.733.7315.4

0.410.410.41

49.40.4164.36

0.0876204,000204,0000.1753.68

9888.3233.70.584

204,000204,0000.2624.6

11.30.0950.9960.02

46,70046,7000.040.841

20.80.01641.37

0.01642,8602,8600.02741.31

4160.3299.240.112,8602,8600.04068.76

4.750.003750.314

0.00375654654

0.006250.3

21.913.122.622.622.614.60.112.940.43656.50.3831.17

73013.159.459.459.414.63.6570.714.51,89012.838.9

53

5.155.155.153.330.0250.6710.112.9

0.08750.267

0.01210.001320.01680.01680.01680.265

0.0001650.185

0.4250.2322.942.942.9446.40.02932.5

0.4850.05290.6710.6710.67110.6

0.006627.41

0.2620.03420.03420.03420.01150.0664

0.0005560.02910.0253

45.985.685.65992.0211.6

0.09745.094.43

10.51.371.371.370.4612.66

0.02221.161.01

2.98e-075.26e-052.1e-094.38e-106.12e-081.49e-091.97e-050.559

1.84e-075.34e-080.0001972.28e-083.33e-084.38e-081.58e-100.0001580.0001656.57e-062.45e-102.63e-101.05e-107.36e-091.58e-101.23e-07

1.3110.510.4


2.98e-075.26e-052.1e-094.38e-106.12e-081.49e-091.97e-050.559

1.84e-075.34e-080.0001972.28e-083.33e-084.38e-081.58e-100.0001580.0001656.57e-062.45e-102.63e-101.05e-107.36e-091.58e-101.23e-07

1.3110.510.4


6.8e-081.2e-054.8e-101e-101.4e-083.4e-104.49e-06

1.014.2e-081.22e-084.49e-055.2e-097.6e-091e-083.6e-113.6e-053.78e-051.5e-065.6e-116e-112.4e-111.68e-093.6e-112.8e-082.352.392.38

2.2e-082.4e-102.4e-113.6e-112.4e-113.6e-113.6e-114.2e-084e-094.8e-113.6e-113.6e-113.2e-103.6e-114.8e-102.4e-08

PTE by subject item






Potential (lbs/hr)


(tons/yr)

Potential Limited

(tons/yr)

Actual Emissions

(tons/yr)

Treatment 023-Flaring TREA21 CE026 FlaringCarbon Dioxide


Carbon Monoxide

Chromium compounds

Chrysene

Cobalt compounds


Fluoranthene

Fluorene

Formaldehyde

HAPs - Total

Hexane


Lead

Manganese compounds

Mercury Compounds

Methane

Naphthalene

Nickel compounds

Nitrogen Oxides

Nitrous Oxide

Phenanthrene


Pyrene

Selenium compounds

Sulfur Dioxide

Toluene

131-Thermal Oxidizer TREA25 CE030 Thermal Oxidizer 1,4-Dichlorobenzene (par..

2-Methylnaphthalene



Acenaphthene

Acenaphthylene

Anthracene

Arsenic compounds

Benzene

Benzo(a)anthracene


Benzo(ghi)perylene


Benzo[a]pyrene

Beryllium Compounds

Cadmium compounds

Carbon Dioxide


Chromium compounds

Chrysene

Cobalt compounds


Fluoranthene

Fluorene

Hexane


Lead

Manganese compounds

Mercury Compounds

Methane

Naphthalene

Nickel compounds

Nitrous Oxide

Phenanthrene


Pyrene

Selenium compounds

Toluene

2.98e-075.26e-052.1e-094.38e-106.12e-081.49e-091.97e-050.559

1.84e-075.34e-080.0001972.28e-083.33e-084.38e-081.58e-100.0001580.0001656.57e-062.45e-102.63e-101.05e-107.36e-091.58e-101.23e-07

1.3110.510.4


2.98e-075.26e-052.1e-094.38e-106.12e-081.49e-091.97e-050.559

1.84e-075.34e-080.0001972.28e-083.33e-084.38e-081.58e-100.0001580.0001656.57e-062.45e-102.63e-101.05e-107.36e-091.58e-101.23e-07

1.3110.510.4


6.8e-081.2e-054.8e-101e-101.4e-083.4e-104.49e-06

1.014.2e-081.22e-084.49e-055.2e-097.6e-091e-083.6e-113.6e-053.78e-051.5e-065.6e-116e-112.4e-111.68e-093.6e-112.8e-082.352.392.38

2.2e-082.4e-102.4e-113.6e-112.4e-113.6e-113.6e-114.2e-084e-094.8e-113.6e-113.6e-113.2e-103.6e-114.8e-102.4e-08

0.0002631.86e-063.86e-075.4e-051.31e-060.0173

0.0001624.71e-050.173

2.01e-052.94e-053.86e-051.39e-070.139

2.16e-072.32e-079.28e-086.49e-061.39e-070.0001089,2309,2208.5e-059.28e-079.28e-081.39e-079.28e-081.39e-071.39e-070.0001621.55e-051.86e-071.39e-071.39e-071.24e-061.39e-071.86e-069.28e-05

0.0002631.86e-063.86e-075.4e-051.31e-060.0173

0.0001624.71e-050.173

2.01e-052.94e-053.86e-051.39e-070.139

2.16e-072.32e-079.28e-086.49e-061.39e-070.0001089,2309,2208.5e-059.28e-079.28e-081.39e-079.28e-081.39e-071.39e-070.0001621.55e-051.86e-071.39e-071.39e-071.24e-061.39e-071.86e-069.28e-05

6e-054.24e-078.82e-081.23e-053e-07

0.003963.71e-051.08e-050.03964.59e-066.71e-068.82e-063.18e-080.03184.94e-085.29e-082.12e-081.48e-063.18e-082.47e-052,1102,100


PTE by subject item



Subject ItemCategoryDescription


Subject ItemDesignation

Subject ItemDescription Relationship

Related SubjectItem ID % Flow

Related Subject ItemType Description

Start Date (RelatedSubject Item)

End Date (RelatedSubject Item)

Equipment Boiler EQUI35 EU028 Boiler 1 sends to STRU33 100 Stack/Vent 10/25/2006 Null

EQUI36 EU029 Boiler 2 sends to STRU34 100 Stack/Vent 10/25/2006 Null

Conveyor EQUI6 EU056 Silo #3Conveyer

is controlledby

TREA7 100018-Fabric Filter - LowTemp, T<180 Degrees F

2/15/2013 Null

sends to STRU7 100 Stack/Vent 2/15/2013 Null

EQUI11 EU061 Silo #4Conveyer

is controlledby


2/15/2013 Null


EQUI14 EU064 Silo #5Conveyer

is controlledby


2/15/2013 Null


EQUI21 EU002 CornConveyor 1

is controlledby


10/25/2006 Null


EQUI24 EU005 CornConveyor 2

is controlledby


8/14/2008 Null


EQUI26 EU007 TransferConveyor 1

is controlledby


8/14/2008 Null


EQUI33 EU015 DDGSConveyor

is controlledby


10/25/2006 Null


EQUI114 EU009 Silo #1 andSilo #2Reclaim

is controlledby


8/14/2008 Null


EQUI119 Null HammermillConveyor 1

is controlledby


3/12/2008 Null



is controlledby


3/12/2008 Null



is controlledby


3/12/2008 Null


EQUI122 Null FlourConveyor 1

is controlledby


3/12/2008 Null



is controlledby


3/12/2008 Null


SI - SI relationships











Equipment Conveyor EQUI123 Null FlourConveyor 2

is controlledby TREA8 100

018-Fabric Filter - LowTemp, T<180 Degrees F 3/12/2008 Null



is controlledby


3/12/2008 Null


EQUI125 Null ScrewConveyor,RecycleSolids

is controlledby


3/12/2008 Null


EQUI136 Null DDGSStorageReclaimConveyor

is controlledby


3/12/2008 Null


EQUI166 EU057 Silo #3Reclaim

is controlledby


2/15/2013 Null



is controlledby


2/15/2013 Null



is controlledby


2/15/2013 Null


Cooler EQUI56 EU051 DDGS Cooleris controlledby

TREA25 100 131-Thermal Oxidizer 10/25/2006 Null


3/12/2008 Null


STRU80 0 Stack/Vent 3/12/2008 Null

Dehydrator EQUI49 EU044 Evaporatoris controlledby

TREA23 100050-Packed-GasAbsorption Column

10/25/2006 Null


DistillationEquipment

EQUI47 EU042 Rectifieris controlledby


10/25/2006 Null


Dryer/Oven,unknown firingmethod

EQUI55 EU050 DDGS DryerwithMulticlone

is controlledby




Elevator EQUI22 EU003 CornElevator 1

is controlledby


10/25/2006 Null


EQUI25 EU006 CornElevator 2

is controlledby


8/14/2008 Null













Equipment Elevator EQUI25 EU006 CornElevator 2


018-Fabric Filter - LowTemp, T<180 Degrees F 8/14/2008 Null


EQUI115 Null CornElevator 3

is controlledby


8/14/2008 Null


EQUI126 Null FlourElevator

is controlledby


3/12/2008 Null


EQUI137 Null DDGSReclaimElevator

is controlledby


3/12/2008 Null


FermentationEquipment

EQUI38 EU033 Yeast Tankis controlledby


10/25/2006 Null


EQUI39 EU034 Fermenter 1is controlledby


10/25/2006 Null




10/25/2006 Null




10/25/2006 Null




10/25/2006 Null


EQUI43 EU038 Beerwellis controlledby


10/25/2006 Null


LiquefactionEquipment

EQUI44 EU039 LiquefactionTank

is controlledby


10/25/2006 Null



EQUI4 EU031 TruckEthanolLoadout

is controlledby

TREA21 100 023-Flaring 10/25/2006 Null


EQUI34 EU016 DDGS LoadSpout(Truck/Rail,Captured)

is controlledby


10/25/2006 Null


EQUI116 Null Rail EthanolLoadout

is controlledby

TREA21 100 023-Flaring 10/25/2006 Null



EQUI20 EU001 Corn DumpPit/Auger 1(Captured)

is controlledby

TREA7 100 018-Fabric Filter - LowTemp, T<180 Degrees F

10/25/2006 Null












Equipment

Loading-UnloadingEquipment EQUI116 Null

Rail EthanolLoadout sends to STRU35 100 Stack/Vent 10/25/2006 Null



is controlledby


10/25/2006 Null



is controlledby


8/14/2008 Null


EQUI32 EU014 Bulkweigheris controlledby


8/14/2008 Null


Milling EquipmentEQUI29 EU011 Hammermill1

is controlledby


8/14/2008 Null


EQUI30 EU012 Hammermill2

is controlledby


10/25/2006 Null


EQUI57 EU055 Hammermill3

is controlledby


8/14/2008 Null


Other Combustion EQUI169 Null BoilerMake-Up AirHeater



Other EmissionUnit

EQUI27 EU008 Scalperis controlledby


8/14/2008 Null


EQUI109 EU049 CentrateTank

is controlledby


10/25/2006 Null


EQUI110 Null Slurry Tankis controlledby


10/25/2006 Null


EQUI111 Null ProcessCondensateTank

is controlledby


10/25/2006 Null


EQUI112 Null WholeStillage Tank

is controlledby


10/25/2006 Null


EQUI113 Null Thin StillageTank

is controlledby


10/25/2006 Null


EQUI127 Null Syrup Tankis controlledby


3/12/2008 Null













Equipment Other EmissionUnit

EQUI127 Null Syrup Tank


050-Packed-GasAbsorption Column 3/12/2008 Null


EQUI128 Null Corn SyrupRetentionTank

is controlledby


3/12/2008 Null


EQUI139 Null Beer ColumnVentCondenser

is controlledby


3/12/2008 Null


EQUI140 Null RefluxCondenser

is controlledby


3/12/2008 Null


EQUI141 Null Reflux VentCondenser

is controlledby


3/12/2008 Null


EQUI142 Null Superheateris controlledby


3/12/2008 Null


EQUI143 Null RegenPreheater

is controlledby


3/12/2008 Null


EQUI144 Null DD&ECondensatePreheater

is controlledby


3/12/2008 Null


EQUI145 Null Acid Columnis controlledby


3/12/2008 Null


EQUI146 Null ProductCondenser

is controlledby


3/12/2008 Null


EQUI147 Null RegenReceiver

is controlledby


3/12/2008 Null


EQUI148 Null EvaporatorCondensateReceiver

is controlledby


3/12/2008 Null


EQUI149 Null EvaporatorCondenser

is controlledby


3/12/2008 Null


EQUI150 Null EvaporatorVacuumReceiver

is controlledby


3/12/2008 Null


Reciprocating ICEngine

EQUI18 EU027 EmergencyGenerator

sends toSTRU36 50 Stack/Vent 8/14/2008 Null












Equipment

Other EmissionUnit EQUI150 Null

EvaporatorVacuumReceiver sends to STRU25 100 Stack/Vent 3/12/2008 Null

Reciprocating ICEngine

EQUI18 EU027 EmergencyGenerator



EQUI108 EU026 Fire Pump sends to STRU32 100 Stack/Vent 10/25/2006 Null

SeparationEquipment

EQUI48 EU043 MolecularSieve (2bottles)

is controlledby


10/25/2006 Null


EQUI50 EU045 Centrifuge 1is controlledby


10/25/2006 Null




10/25/2006 Null




10/25/2006 Null




10/25/2006 Null


Silo/Bin EQUI1 EU010 GrinderSurge Bin

is controlledby


8/14/2008 Null


EQUI8 EU058Corn StorageSilo #1










StrippingEquipment

EQUI45 EU040 BeerStripper

is controlledby


10/25/2006 Null


EQUI46 EU041 Side Stripperis controlledby


10/25/2006 Null


Treatment018-Fabric Filter -Low Temp, T<180..

TREA39 NullDDGS CoolerBaghouse

is controlledin series by





Subject ItemTypeDescription Subject Item ID


Subject ItemDescription Capacity (gal)Substance Stored

ColumnDiameter (ft)

Number ofColumns Deck Type

InteriorDiameter (ft)

InteriorHeight (ft)

MaximumTrue VaporPressure(psia)

ConstructionType Seal Type Support Type

DateInstalled orConstructed

AbovegroundStorage Tank

EQUI58 TK001 200 Proof Tank 158600Ethanol (EthylAlcohol)

0.7 1Bolted, 7 ft widecont.sheetconstrn

30 32 0.59InternalFloatingRoof

Flexible wiper;w/rim mountd secondseal

Column, with 8 inchdiameter columns

3/1/2007120000 AM

EQUI59 TK002 200 Proof Tank 158600Ethanol (EthylAlcohol)

0.7 1Bolted, 7 ft widecont.sheetconstrn



Column, with 8 inchdiameter columns

3/1/2007120000 AM

EQUI60 TK003DenaturantStorage Tank

51000 Other Null NullBolted, 7 ft widecont.sheetconstrn



Self, fixed roof w/ointernal columns

3/1/2007120000 AM

EQUI61 TK004DenaturedEthanol Tank 1

1000000 Denatured Ethanol 1 1Bolted, 7 ft widecont.sheetconstrn



Column,construction typenot specified

3/1/2007120000 AM

EQUI62 TK005DenaturedEthanol Tank 2

1000000 Denatured Ethanol 1 1Bolted, 7 ft widecont.sheetconstrn



Column,construction typenot specified

3/1/2007120000 AM

Aboveground Storage Tanks, General


Details for:SI Category: EquipmentSI Type: Aboveground Storage Tank



Subject ItemDescription Manufacturer Model

Max DesignCapacity

Max DesignCapacityUnits(numerator)

Max DesignCapacity Units(denominator) Material

ConstructionStart Date

OperationStart Date

ModificationDate

Conveyor EQUI6 EU056 Silo #3 Conveyer S-M Howell 3024 15000 bushels hours Corn TBD TBD Null

EQUI11 EU061 Silo #4 Conveyer S-M Howell TBD 15000 bushels hours Corn TBD TBD Null

EQUI14 EU064 Silo #5 Conveyer S-M Howell TBD 15000 bushels hours Corn TBD TBD Null

EQUI21 EU002 Corn Conveyor 1 Howell 2018LARB-U-91'81/4" 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI24 EU005 Corn Conveyor 2 Howell 2018LARB-U 137' 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI26 EU007 Transfer Conveyor 1Howell 3024LARBU-U 149'6' 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI33 EU015 DDGS Conveyor Howell 1210LARBU 105' 180 tons hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null

EQUI114 EU009Silo #1 and Silo #2Reclaim

Howell 1214LARBU 190' 2800 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI119 NullHammermillConveyor 1

Howell Y-1451 6000 bushels hours Corn 10/29/2006 3/12/2008 Null





EQUI122 Null Flour Conveyor 1 Howell 1214LARB-PU 44' 6000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI123 Null Flour Conveyor 2 AJ Conweigh 24" x 9' weigh screw 6000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI124 Null Flour Conveyor 3 Howell 1214LARB 100' 6000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI125 NullScrew Conveyor,Recycle Solids

Howell NA 1000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI129 NullDDGS StorageConveyor 1

Howell 1616-SSB-KXU 4000 bushels hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null


Howell 1214LARBU 55' 4000 bushels hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null


Howell 1210LARBU 4000 bushels hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null


Howell 1210LARBU 4000 bushels hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null

EQUI136 NullDDGS StorageReclaim Conveyor

Howell 2018LABRU 15000 bushels hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null

EQUI166 EU057 Silo #3 Reclaim S-M Howell 1214 6000 bushels hours Corn TBD TBD Null

EQUI167 EU062 Silo #4 Reclaim S-M Howell TBD 6000 bushels hours Corn TBD TBD Null

EQUI168 EU065 Silo #5 Reclaim S-M Howell TBD 6000 bushels hours Corn TBD TBD Null

Cooler EQUI56 EU051 DDGS Cooler GEA Barr-Rosin FBST-31 30 tons hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null

Dehydrator EQUI49 EU044 Evaporator Mueller & Co 354726-1-4 6382 gallons each Ethanol 10/29/2006 3/12/2008 Null

DistillationEquipment

EQUI47 EU042 RectifierChattanooga BoilerCo

0970-09-1553 26129 gallons each Ethanol 10/29/2006 3/12/2008 Null

Elevator EQUI22 EU003 Corn Elevator 1 Howell 42EW22 LEG 130' 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI25 EU006 Corn Elevator 2 Howell 42EW22 LEG 130' 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

Emission Units 1


Details for:SI Category: NoneSI Type: Conveyor, Cooler, Dehydrator and 11 more




Max DesignCapacity




OperationStart Date

ModificationDate

ElevatorEQUI22 EU003 Corn Elevator 1 Howell 42EW22 LEG 130' 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI25 EU006 Corn Elevator 2 Howell 42EW22 LEG 130' 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI115 Null Corn Elevator 3 Howell 30C LEG 115' 7500 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI126 Null Flour Elevator Howell 30C Leg 65' 6000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI131 NullDDGS StorageElevator

Howell 24B Leg 65' 4000 bushels hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null

EQUI137 NullDDGS ReclaimElevator

Howell 42WE22 LEG 88' 15000 bushels hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null

Fermentation Equipment

EQUI38 EU033 Yeast Tank Brown Tank 10623-02 121350 gallons each Yeast 10/29/2006 3/12/2008 Null

EQUI39 EU034 Fermenter 1 Brown Tank 10623-03A 641900 gallons each Beer 10/29/2006 3/12/2008 Null

EQUI40 EU035 Fermenter 2 Brown Tank 10623-03B 641900 gallons each Beer 10/29/2006 3/12/2008 Null

EQUI41 EU036 Fermenter 3 Brown Tank 10623-03C 641900 gallons each Beer 10/29/2006 3/12/2008 Null

EQUI42 EU037 Fermenter 4 Brown Tank 10623-03D 641900 gallons each Beer 10/29/2006 3/12/2008 Null

EQUI43 EU038 Beerwell Brown Tank 10623-04 883500 gallons each Beer 10/29/2006 3/12/2008 Null

LiquefactionEquipment

EQUI44 EU039 Liquefaction Tank August Winter & Co TK-2101 155000 gallons each Material 10/29/2006 3/12/2008 Null


EQUI4 EU031Truck EthanolLoadout

Determan Brownie K2GEA003C00-T6446456..903 gallons minutes Ethanol 10/29/2006 3/12/2008 Null

EQUI34 EU016DDGS Load Spout(Truck/Rail,Captured)

DCL UN800EV-8HC 180 tons hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null

EQUI116 NullRail EthanolLoadout

Determan Brownie 10782-0201 1000 gallons minutes Ethanol 10/29/2006 3/12/2008 Null

EQUI138 NullDDGS Load Spout(Truck/Rail,Uncaptured)

DCL UN800EV-8HC 180 tons hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null

MaterialHandlingEquipment

EQUI20 EU001Corn DumpPit/Auger 1(Captured)

Howell 218265050 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI23 EU004Corn DumpPit/Auger 2(Captured)


EQUI32 EU014 Bulkweigher MICADA/CompuW..1431200006 180 tons hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null

EQUI117 NullCorn DumpPit/Auger 1(Uncaptured)


EQUI118 NullCorn DumpPit/Auger 2(Uncaptured)


EQUI134 NullDDGS Reclaim viaFront End Loader

NA NA 15000 bushels hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null

EQUI135 NullDDGS ReclaimDump Pit

Howell 48'-1" x 8" 15000 bushels hoursDistillersDried GrainsWith Solids

10/29/2006 3/12/2008 Null

MillingEquipment

EQUI29 EU011 Hammermill 1 Bliss E-4436-TF 1124 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI30 EU012 Hammermill 2 Bliss E-4436-TF 1124 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI57 EU055 Hammermill 3 Bliss E-4436-F 1124 bushels hours Corn 10/29/2006 3/12/2008 Null

OtherEmissionUnit

EQUI27 EU008 Scalper Morot Milpro CS-450/43407 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI109 EU049 Centrate Tank August Winter & Co TK-5101 1880 gallons each Material 10/29/2006 3/12/2008 Null

Emission Units 1






Max DesignCapacity




OperationStart Date

ModificationDate

OtherEmissionUnit

EQUI27 EU008 Scalper Morot Milpro CS-450/43407 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI109 EU049 Centrate Tank August Winter & Co TK-5101 1880 gallons each Material 10/29/2006 3/12/2008 Null

EQUI110 Null Slurry Tank August Winter & Co TK-2101 17600 gallons each Material 10/29/2006 3/12/2008 Null

EQUI111 NullProcess CondensateTank

August Winter & Co TK-7601 177800 gallons each Material 10/29/2006 3/12/2008 Null

EQUI112 Null Whole Stillage TankAugust Winter & Co TK-5102 199900 gallons each Material 10/29/2006 3/12/2008 Null

EQUI113 Null Thin Stillage Tank August Winter & Co TK-5103 145800 gallons each Material 10/29/2006 3/12/2008 Null

EQUI127 Null Syrup Tank Brown Tank TK-5104 134800 gallons each Material 10/29/2006 3/12/2008 Null

EQUI128 NullCorn SyrupRetention Tank

A & B ProcessSystems

TK-5152 34200 gallons each Material 10/29/2006 3/12/2008 Null

EQUI139 NullBeer Column VentCondenser

Mueller E-4102 434 pounds hours Ethanol 10/29/2006 3/12/2008 Null

EQUI140 Null Reflux Condenser Mueller E-4201 101173 pounds hours Ethanol 10/29/2006 3/12/2008 Null

EQUI141 NullReflux VentCondenser


EQUI142 Null Superheater Mueller E-4301 51576 pounds hours Ethanol 10/29/2006 3/12/2008 Null

EQUI143 Null Regen Preheater Mueller E-4304 8350 pounds hours Ethanol 10/29/2006 3/12/2008 Null

EQUI144 NullDD&E CondensatePreheater


EQUI145 Null Acid ColumnIndustrial AlloyFabricators, LLC

C-4401 1606 gallons each Ethanol 10/29/2006 3/12/2008 Null

EQUI146 Null Product Condenser Mueller E-4401 43215 pounds hours Ethanol 10/29/2006 3/12/2008 Null

EQUI147 Null Regen ReceiverIndustrial AlloyFabricators, LLC

VS-4303 2719 gallons each Ethanol 10/29/2006 3/12/2008 Null

EQUI148 NullEvaporatorCondensateReceiver

Industrial AlloyFabricators, LLC


EQUI149 NullEvaporatorCondenser



Industrial AlloyFabricators, LLC


EQUI151 NullGasoline Tank(1,000 gal)

O'Day Equipment 5'4" diameter x 6' length 1000 gallons each Fuel 10/29/2006 3/12/2008 Null

EQUI152 Null Gasoline DispensingTuthill TransferSystem

Series 100 Model 112 600 gallons hours Fuel 10/29/2006 3/12/2008 Null

SeparationEquipment

EQUI48 EU043Molecular Sieve (2bottles)

Chattanooga BoilerCo

0970-01/-02 12972 gallons each Ethanol 10/29/2006 3/12/2008 Null

EQUI50 EU045 Centrifuge 1 Alpha Laval CHNX944B-31G 200 gallons minutes Material 10/29/2006 3/12/2008 Null




Silo/Bin EQUI1 EU010 Grinder Surge Bin Lorrich TK-1405 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI8 EU058 Corn Storage Silo#1

Brock 10570 308373 bushels each Corn 10/29/2006 3/12/2008 Null

Emission Units 1






Max DesignCapacity




OperationStart Date

ModificationDate

Silo/BinEQUI1 EU010 Grinder Surge Bin Lorrich TK-1405 15000 bushels hours Corn 10/29/2006 3/12/2008 Null

EQUI8 EU058Corn Storage Silo#1





Brock 10570 576255 bushels each Corn TBD TBD Null





StrippingEquipment

EQUI45 EU040 Beer StripperIndustrial AlloyFabricators

S1013-7 29500 gallons each Beer 10/29/2006 3/12/2008 Null

EQUI46 EU041 Side StripperChattanooga BoilerCo

0970-09-1554 6500 gallons each Ethanol 10/29/2006 3/12/2008 Null

Emission Units 1






Max DesignCapacity

Max DesignCapacity Units(numerator)



OperationStart Date

ModificationDate

Boiler EQUI35 EU028 Boiler 1 Superior Boiler8-5-11000-S150-WB-G

92.4million Britishthermal units

hours Heat 10/29/2006 3/12/2008 Null

EQUI36 EU029 Boiler 2 Superior Boiler8-5-11000-S150-WB-G

92.4million Britishthermal units

hours Heat 10/29/2006 3/12/2008 Null

Dryer/Oven, unknownfiring method EQUI55 EU050

DDGS Dryerwith Multiclone

GEA Barr-Rosin2410-ROTD 15-0x 69-0

100 tons hours Grain 10/29/2006 3/12/2008 Null

Other Combustion EQUI169 NullBoiler Make-UpAir Heater

Applied Air DFC-225-HRS 5.06million Britishthermal units

hours Heat 10/29/2006 3/12/2008 Null

Reciprocating IC EngineEQUI18 EU027EmergencyGenerator

KatoLight D1500FRY4 1700brakehorsepower

each Power 1/1/2006 3/7/2008 Null

EQUI108 EU026 Fire Pump Clarke JX6H-UF-40 460 horsepower each Power 1/1/2006 2/18/2008 Null

Emission Units 2


Details for:SI Category: EquipmentSI Type: Boiler, Dryer/Oven, unknown firing method, Other Combustion and 1 more



Subject ItemDescription

FiringMethod Engine Use

EngineDisplacement

EngineDisplacementUnits

Subject toCSAPR?

ElectricGeneratingCapacity(MW)

Boiler EQUI35 EU028 Boiler 1Not coalburning

Null Null Null N Null

EQUI36 EU029 Boiler 2Not coalburning

Null Null Null N Null

Dryer/Oven, unknownfiring method EQUI55 EU050

DDGS Dryerwith Multiclone

Not coalburning

Null Null Null Null Null

Other Combustion EQUI169 NullBoiler Make-UpAir Heater

Not coalburning

Null Null Null Null Null

Reciprocating IC EngineEQUI18 EU027EmergencyGenerator

CI Emergency/blackstart 4.09 liters per cylinderNull Null

EQUI108 EU026 Fire Pump CI Firepump 2.08 liters per cylinderNull Null

Emission Units 2 (continued)


Details for:SI Category: EquipmentSI Type: Boiler, Dryer/Oven, unknown firing method, Other Combustion and 1 more



Subject ItemDescription Install Year Pollutants Emitted

Cooling Tower FUGI7 EU017 CoolingTower Cell 1

2006 Particulate Matter

PM < 2.5 micron

PM < 10 micron

FUGI8 EU018 CoolingTower Cell 2


PM < 2.5 micron

PM < 10 micron

FUGI9 EU019 CoolingTower Cell 3


PM < 2.5 micron

PM < 10 micron

Equipment Leaks FUGI15 FS005 EquipmentLeaks

2008 Acetaldehyde

Acrolein

Benzene

Formaldehyde

Hexane

Methanol

Toluene

Volatile Organic Compounds

Fugitive-Other FUGI16 FS006 Wetcake-AOS

2008Acetaldehyde

Fugitive Sources


Details for:SI Category: FugitiveSI Type: Cooling Tower, Equipment Leaks, Fugitive-Other and 4 more



Subject ItemDescription Install Year Pollutants EmittedEquipment Leaks FUGI15 FS005EquipmentLeaks 2008 Volatile Organic Compounds

Fugitive-Other FUGI16 FS006 Wetcake-AOS

2008 Acetaldehyde

Acrolein

Formaldehyde

Methanol

Volatile Organic Compounds

Material Handling/Transfer/Storage

FUGI11 FS007 GrainReceivingandConveying atTemporaryStorage Fac..


PM < 2.5 micron

PM < 10 micron

FUGI19 Null GrainReclaimOperationsatTemporaryStorage Fac..


PM < 2.5 micron

PM < 10 micron

Paved Road FUGI17 FS004 Paved Roads2008 Particulate Matter

PM < 2.5 micron

PM < 10 micron

Piles FUGI20 Null WindErosion atTemporaryStorageFacility


PM < 2.5 micron

PM < 10 micron

Unpaved Roads FUGI18 Null UnpavedRoads

2008Particulate Matter

Fugitive Sources





Subject ItemDescription Install Year Pollutants EmittedPiles FUGI20 Null

WindErosion atTemporaryStorageFacility 2008 PM < 10 micron

Unpaved Roads FUGI18 Null UnpavedRoads


PM < 2.5 micron

PM < 10 micron

Fugitive Sources




Subject ItemDesignation Subject Item Description Height

Units(height) Length

Units(length) Width

Units(width)

Building STRU41 NullGrain Receiving/DDGSLoadout Building (BLD_1)

37 feet 76 feet 127 feet

STRU42 NullDDGS Storage Building(BLD_2)


STRU43 NullMaintenance Building(BLD_3)


STRU44 Null Dryer Building (BLD_4) 57 feet 116 feet 63 feet

STRU45 Null Boiler Building (BLD_5) 28 feet 60 feet 68 feet

STRU46 Null DD&E Building (BLD_6) 44 feet 102 feet 88 feet

STRU47 NullDD&E Building (BLD_6, Tier2)


STRU48 NullAdministration Building(BLD_7)


STRU49 Null Cooling Tower (BLD_8) 20 feet 105 feet 41 feet

STRU50 Null WDGS Building (BLD_9) 33 feet 93 feet 56 feet



STRU52 NullMain Process Building(BLD_10, Tier 2)


STRU53 Null MCC Building (BLD_11) 20 feet 43 feet 27 feet

STRU54 NullCooling Tower PumpBuilding (BLD_12)






STRU57 Null Grain Silo #1 90.6 feet 75 feet 75 feet

STRU58 Null Grain Silo #2 90.6 feet 75 feet 75 feet

STRU59 Null Water Tank 20 feet 55 feet 55 feet

STRU60 Null Beerwell 60 feet 60 feet 60 feet

STRU61 Null Fermenter #4 (TANK5) 53 feet 55 feet 55 feet


Buildings, General


Details for:SI Category: StructureSI Type: Building


Subject ItemDesignation Subject Item Description Height

Units(height) Length

Units(length) Width

Units(width)

BuildingSTRU61 Null Fermenter #4 (TANK5) 53 feet 55 feet 55 feet




STRU65 NullYeast Propagation Tank(TANK9)


STRU66 Null Syrup Tank (TANK10) 40 feet 25 feet 25 feet

STRU67 NullThin Stillage Tank(TANK11)


STRU68 NullProcess Condensate Tank(TANK12)


STRU69 NullWhole Stillage Tank(TANK13)


STRU70 Null TK-6101 (TANK14) 38 feet 30 feet 30 feet





STRU75 Null Liquefaction Tank 48 feet 25 feet 25 feet

STRU76 Null Grain Silo 3 98 feet 105 feet 105 feet



Buildings, General


Details for:SI Category: StructureSI Type: Building



Subject ItemDescription

Stack Height(feet)

StackDiameter(feet)

Stack Length(feet)

Stack Width(feet)

Stack Flow Rate(cubic ft/min)

DischargeTemperature(°F)

FlowRate/TempInformationSource Discharge Direction

Stack/Vent STRU7 SV001Grain Receivingwith Baghouse

96.25 3.67 Null Null 37000 68 EstimateUpwards with no cap onstack/vent

STRU22 SV008Hammermill withBaghouse

40 3 Null Null 23800 68 EstimateUpwards with no cap onstack/vent

STRU23 SV011DDGS Loadout withBaghouse

33 1.4 Null Null 4800 68 EstimateUpwards with no cap onstack/vent

STRU24 SV026Fermentation withCO2 Scrubber

37 2 Null Null 8500 70 EstimateUpwards with no cap onstack/vent

STRU25 SV027Distillation (VentGas) Scrubber


STRU26 SV028DDGS with ThermalOxidizer


STRU27 SV036 Grain Bin #1 69.75 4.48 Null Null 0.1 68 Estimate Horizontally





STRU32 SV020 Fire Pump 8 0.5 Null Null 2175 800 Estimate Horizontally

STRU33 SV022 Boiler 1 45 3 Null Null 35000 250 EstimateUpwards with no cap onstack/vent

STRU34 SV023 Boiler 2 45 3 Null Null 35000 250 EstimateUpwards with no cap onstack/vent

STRU35 SV025 Loadout Flare 35 3.5 Null Null 47500 800 EstimateUpwards with no cap onstack/vent

STRU36 SV034EmergencyGenerator


STRU37 SV035EmergencyGenerator


STRU79 Null RTO Bypass Stack 51.09 3 Null Null 75000 246 EstimateUpwards with no cap onstack/vent

STRU80 NullDDGS CoolerBaghouse Stack

30.67 2.99 Null Null 22975 156 Estimate Horizontally

Stack/Vent, General


Details for:SI Category: StructureSI Type: Stack/Vent




InstallationStart Date

PollutantControlled

CaptureEfficiency(%)

DestructionCollectEfficiency(%)

Subject toCAM?

Large orOther PSEU?

EfficiencyBasis

Scrubber MinimumPressure Drop (in.of water column)

ScrubberMaximumPressureDrop (in. of ..

MinimumLiquid FlowRate(gal/min)

050-Packed-GasAbsorptionColumn

TREA22 CE027 CO2 (Fermentation) Scrubber

Delta-T C-3201 10/29/2006 Acetaldehyde 100 85 No Null Other 0.5 6 44

Acrolein 100 32.5 No Null Other 0.5 6 44

Formaldehyde 100 85 No Null Other 0.5 6 44

Methanol 100 95 No Null Other 0.5 6 44

Volatile OrganicCompounds

100 95 Yes OtherMfr/Vendordata

0.5 6 44

TREA23 CE028 Vent Gas(Distillation)Scrubber

Delta-T C-3202 10/29/2006 Acetaldehyde 100 85 No Null Other 0.1 6 32

Acrolein 100 32.5 No Null Other 0.1 6 32

Formaldehyde 100 85 No Null Other 0.1 6 32

Methanol 100 95 No Null Other 0.1 6 32



0.1 6 32

Scrubbers, General


Details for:SI Category: TreatmentSI Type: 050-Packed-Gas Absorption Column




InstallationStart Date

PollutantControlled


Destruction CollectEfficiency (%)

Subject toCAM?

Large orOther PSEU?

EfficiencyBasis

Otheroperatingparameters?

Other operatingparametersdescription

023-Flaring TREA21 CE026 Flaring JohnZink LHT-1-12-2..10/29/2006 Benzene 98.7 98 No Null Other Yes Presence of Flame

Hexane 98.7 98 Yes Other Other Yes Presence of Flame

Toluene 98.7 98 No Null Other Yes Presence of Flame


98.7 98 Yes OtherMfr/Vendordata

Yes Presence of Flame

Other Control Equipment


Details for:SI Category: TreatmentSI Type: 023-Flaring

Subject Item ID SI Designation and Description Manufacturer ModelInstallationStart Date

PollutantControlled


DestructionCollectEfficiency(%)

Subject toCAM?

Large orOther PSEU?

EfficiencyBasis

ThermalOxidationBurner Capacity(MMBTU/hr)

ThermalOxidation InletTemperature(°F)

ThermalOxidationMinimumCombustio..

ThermalOxidationOutletTemperatur..

ThermalOxidationResidenceTime (secon..

131-Thermal Oxidizer, TREA25 CE030Thermal Oxidizer

ProEnvironmental

PEI JobNo. 1033

10/29/2006 Acetaldehyde 100 97 Yes OtherMfr/Vendordata

18 250 1615 1615 1

Acrolein 100 97 Yes Other Other 18 250 1615 1615 1

Carbon Monoxide 100 97 Yes OtherMfr/Vendordata

18 250 1615 1615 1

Formaldehyde 100 97 Yes Other Other 18 250 1615 1615 1

Methanol 100 97 Yes Other Other 18 250 1615 1615 1

ParticulateMatter

100 62 No NullMfr/Vendordata

18 250 1615 1615 1

PM < 2.5 micron 100 62 No Null Other 18 250 1615 1615 1

PM < 10 micron 100 62 No NullMfr/Vendordata

18 250 1615 1615 1



18 250 1615 1615 1

Direct Flame Afterburners, General


Details for:SI Category: TreatmentSI Type: 131-Thermal Oxidizer

SI ID Sequence Requirement

TFAC 2 4

The Permittee shall limit Production <= 65.0 million gallons per year 12‐month rolling sum of undenatured ethanol to 200 Proof tanks to be calculated by the 15th day of each month for the previous 12‐month period as described later in this permit. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TFAC 2 5

The Permittee shall limit Process Throughput <= 679100 tons per year 12‐month rolling sum of grain received to be calculated by the 15th day of each month for the previous 12‐month period as described later in this permit. This limit applies to all grain received at the grain receiving building (EQUI 20/EQUI 117 and EQUI 23/EQUI 118), including grain delivered from offsite and grain reclaimed from the temporary storage facility that is unloaded in the grain receiving building. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TFAC 2 6

The Permittee shall limit Process Throughput <= 212200 tons per year 12‐month rolling sum of dried distillers grains with solubles (DDGS) handled in the DDGS loadout equipment to be calculated by the 15th day of each month for the previous 12‐month period as described later in this permit. The Permittee is not allowed to adjust the weight of DDGS handled in the DDGS loadout equipment, as identified in the loadout receipts, to account for moisture content unless the permit contains specific provisions for monitoring, recordkeeping, and reporting moisture content of the DDGS. This does not include distillers grains handled at the wetcake pad. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TFAC 2 33

The Permittee shall limit Process Throughput <= 1.660 million gallons per year 12‐month rolling sum of denaturant usage to be calculated by the 15th day of each month for the previous 12‐month period as described later in this permit. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TFAC 2 1250

Grain received by the facility shall only be used for production of ethanol and co‐products by the Permittee at the Green Plains Otter Tail LLC facility (ID No. 11100077). Grain is defined by 40 CFR Section 60.301 to include corn, wheat, sorghum, rice, oats, barley, or soybeans. All grain must be received at permitted receiving areas. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TFAC 2 1260

Permit Appendices: This permit contains appendices as listed in the permit Table of Contents. The Permittee shall comply with all requirements contained in Appendices:A. Insignificant Activities and General Applicable Requirements;C. Emission Unit Data for Emission Points that have Flexible Permitting Requirements;D. Performance Test Recordkeeping Items and Test Methods;E. Best Management Practices Plan for Odor Prevention;F. Ambient Air Boundary Control Strategy Implementation Plan;G. Alternative Test Methods for Opacity and Visible Emissions Determinations from Intermittent Dust‐Generating Operations; H. 40 CFR pt. 60, subp. Kb Appendix; I. 40 CFR pt. 60, subp. VV Appendix;J. 40 CFR pt. 60, subp. IIII Appendix;K. 40 CFR pt. 60, subp. A General Provisions Appendix;L. 40 CFR pt. 63, subp. CCCCCC Appendix;M. 40 CFR pt. 63, subp. A General Provisions Appendix; andN. Compliance Schedule for Temporary Storage Facility (TSF) Operations.

Modeling parameters in Appendix B are included for reference only as described elsewhere in this permit. [Minn. R. 7007.0800, subp. 2]

TFAC 2 1270

PERMIT SHIELD: Subject to the limitations in Minn. R. 7007.1800, compliance with the conditions of this permit shall be deemed compliance with the specific provision of the applicable requirement identified in the permit as the basis of each condition. Subject to the limitations of Minn. R. 7007.1800 and 7017.0100, subp. 2, notwithstanding the conditions of this permit specifying compliance practices for applicable requirements, any person (including the Permittee) may also use other credible evidence to establish compliance or noncompliance with applicable requirements.

This permit shall not alter or affect the liability of the Permittee for any violation of applicable requirements prior to or at the time of permit issuance. [Minn. R. 7007.1800(A)(2)]

TFAC 2 1410

The Permittee shall comply with National Primary and Secondary Ambient Air Quality Standards, 40 CFR pt. 50, and the Minnesota Ambient Air Quality Standards, Minn. R. 7009.0010 to 7009.0090. Compliance shall be demonstrated upon written request by the MPCA. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]


TFAC 2 1420

PM < 10 micron: The Permittee shall submit a computer dispersion modeling protocol due August 1, 2021. This protocol will describe the proposed modeling methodology and input data, in accordance with MPCA modeling guidance for Title V air dispersion modeling analyses. The protocol will be based on projected operating conditions under the next permit term. [Minn. R. 7007.0100, Minn. R. 7007.0800, subp. 2, Minn. R. 7009.0020, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

TFAC 2 1430

PM < 10 micron: The Permittee shall submit computer dispersion modeling results due August 1, 2022. [Minn. R. 7007.0100, Minn. R. 7007.0800, subp. 2, Minn. R. 7009.0020, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

TFAC 2 1440

This permit requires modeling to demonstrate compliance with the National Ambient Air Quality Standards (NAAQS). The Permittee may not make any change at the source that would result in an increase in PM10 emissions until it can be demonstrated that emissions from the facility as permitted do not cause an exceedance of the NAAQS. This includes changes that might otherwise qualify as insignificant modifications and minor or moderate amendments. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

TFAC 2 1450

The Permittee shall submit a major permit amendment application due November 1, 2022 to incorporate any assumptions relied upon in the computer dispersion modeling protocol that are not reflected in the current permit. If no application is necessary, the Permittee shall submit a notification to the MPCA that the permit contains all necessary requirements and that this condition is satisfied. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.1500, subp. 1(B)]

TFAC 2 1460

Circumvention: Do not install or use a device or means that conceals or dilutes emissions, which would otherwise violate a federal or state air pollution control rule, without reducing the total amount of pollutant emitted. [Minn. R. 7011.0020]

TFAC 2 1470

Air Pollution Control Equipment: Operate all pollution control equipment whenever the corresponding process equipment and emission units are operated. [Minn. R. 7007.0800, subp. 16(J), Minn. R. 7007.0800, subp. 2]

TFAC 2 1480

Operation and Maintenance Plan: Retain at the stationary source an operation and maintenance plan for all air pollution control equipment. At a minimum, the O & M plan shall identify all air pollution control equipment and control practices and shall include a preventative maintenance program for the equipment and practices, a description of (the minimum but not necessarily the only) corrective actions to be taken to restore the equipment and practices to proper operation to meet applicable permit conditions, a description of the employee training program for proper operation and maintenance of the control equipment and practices, and the records kept to demonstrate plan implementation. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 16(J)]

TFAC 2 1490

Operation Changes: In any shutdown, breakdown, or deviation the Permittee shall immediately take all practical steps to modify operations to reduce the emission of any regulated air pollutant. The Commissioner may require feasible and practical modifications in the operation to reduce emissions of air pollutants. No emissions units that have an unreasonable shutdown or breakdown frequency of process or control equipment shall be permitted to operate. [Minn. R. 7019.1000, subp. 4]

TFAC 2 1500

Fugitive Emissions: Do not cause or permit the handling, use, transporting, or storage of any material in a manner which may allow avoidable amounts of particulate matter to become airborne. Comply with all other requirements listed in Minn. R. 7011.0150. [Minn. R. 7011.0150]

TFAC 2 1510

Fugitive Emissions Control Plan: The Permittee shall submit to the Commissioner and implement a fugitive emissions control plan within 60 days of the date of permit issuance. The plan shall identify all fugitive emission sources, primary and contingent control measures, and recordkeeping. The Permittee shall follow the actions and recordkeeping specified in the control plan. If the Commissioner determines the Permittee is out of compliance with Minn. R. 7011.0150 or the fugitive emission control plan, then the Permittee may be required to amend the control plan and/or install and operate particulate matter ambient monitors as requested by the Commissioner. [Minn. R. 7007.0100, Minn. R. 7007.0800, subp. 2, Minn. R. 7009.0020, Minn. R. 7011.0150, Minn. Stat. 116.07, subd. 4a]

TFAC 2 1560

The Permittee shall clean up commodities spilled on the driveway and other facility property as required to minimize fugitive emissions to a level consistent with RACT (reasonably available control technology). [Minn. R. 7011.1005, subp. 1(A)]

TFAC 2 1570

The Permittee may not operate or maintain the facility such that it creates a public nuisance. If the commissioner determines that operation or maintenance of a commodity facility creates a public nuisance, the commissioner may require the Permittee to take measures necessary to eliminate the nuisance. [Minn. R. 7011.1010]


TFAC 2 1571

Noise: The Permittee shall comply with the noise standards set forth in Minn. R. 7030.0010 to 7030.0080 at all times during the operation of any emission units. This is a state only requirement and is not enforceable by the EPA Administrator or citizens under the Clean Air Act. [Minn. R. 7030.0010‐7030.0080]

TFAC 2 1572

Inspections: The Permittee shall comply with the inspection procedures and requirements as found in Minn. R. 7007.0800, subp. 9(A). [Minn. R. 7007.0800, subp. 9(A)]

TFAC 2 1573

The Permittee shall comply with the General Conditions listed in Minn. R. 7007.0800, subp. 16. [Minn. R. 7007.0800, subp. 16]

TFAC 2 1580

Performance Testing: Conduct all performance tests in accordance with Minn. R. ch. 7017 unless otherwise noted in this permit. [Minn. R. ch. 7017]

TFAC 2 1590

Performance Test Notifications and Submittals:

Performance Test Notification and Plan: due 30 days before each Performance TestPerformance Test Pre‐test Meeting: due 7 days before each Performance TestPerformance Test Report: due 45 days after each Performance Test

The Notification, Test Plan, and Test Report must be submitted in a format specified by the commissioner. [Minn. R. 7017.2017, Minn. R. 7017.2030, subps. 1‐4, Minn. R. 7017.2035, subps. 1‐2]

TFAC 2 1600

Limits set as a result of a performance test (conducted before or after permit issuance) apply until superseded as stated in the MPCA's Notice of Compliance letter granting preliminary approval. Preliminary approval is based on formal review of a subsequent performance test on the same unit as specified by Minn. R. 7017.2025, subp. 3. The limit is final upon issuance of a permit amendment incorporating the change. [Minn. R. 7017.2025, subp. 3]

TFAC 2 1660

Monitoring Equipment Calibration ‐ The Permittee shall either:

1. Calibrate or replace required monitoring equipment every 12 months; or2. Calibrate at the frequency stated in the manufacturer's specifications.

For each monitor, the Permittee shall maintain a record of all calibrations, including the date conducted, and any corrective action that resulted. The Permittee shall include the calibration frequencies, procedures, and manufacturer's specifications (if applicable) in the Operations and Maintenance Plan. Any requirements applying to continuous emission monitors are listed separately in this permit. [Minn. R. 7007.0800, subp. 4(D)]

TFAC 2 1670

Operation of Monitoring Equipment: Unless noted elsewhere in this permit, monitoring a process or control equipment connected to that process is not necessary during periods when the process is shutdown, or during checks of the monitoring systems, such as calibration checks and zero and span adjustments. If monitoring records are required, they should reflect any such periods of process shutdown or checks of the monitoring system. [Minn. R. 7007.0800, subp. 4(D)]

TFAC 2 1680

The Permittee shall submit an application for permit reissuance : Due 180 calendar days before Permit Expiration Date. [Minn. R. 7007.0400, subp. 2]

TFAC 2 1690

Recordkeeping: Retain all records at the stationary source, unless otherwise specified within this permit, for a period of five (5) years from the date of monitoring, sample, measurement, or report. Records which must be retained at this location include all calibration and maintenance records, all original recordings for continuous monitoring instrumentation, and copies of all reports required by the permit. Records must conform to the requirements listed in Minn. R. 7007.0800, subp. 5(A). [Minn. R. 7007.0800, subp. 5(C)]

TFAC 2 1700

Recordkeeping: Maintain records describing any insignificant modifications (as required by Minn. R. 7007.1250, subp. 3) or changes contravening permit terms (as required by Minn. R. 7007.1350, subp. 2), including records of the emissions resulting from those changes. [Minn. R. 7007.0800, subp. 5(B)]

TFAC 2 1710

If the Permittee determines that no permit amendment or notification is required prior to making a change, the Permittee must retain records of all calculations required under Minn. R. 7007.1200. For expiring permits, these records shall be kept for a period of five years from the date the change was made or until permit reissuance, whichever is longer. The records shall be kept at the stationary source for the current calendar year of operation and may be kept at the stationary source or office of the stationary source for all other years. The records may be maintained in either electronic or paper format. [Minn. R. 7007.1200, subp. 4]


TFAC 2 1720

Shutdown Notifications: Notify the Commissioner at least 24 hours in advance of a planned shutdown of any control equipment or process equipment if the shutdown would cause any increase in the emissions of any regulated air pollutant. If the owner or operator does not have advance knowledge of the shutdown, notification shall be made to the Commissioner as soon as possible after the shutdown. However, notification is not required in the circumstances outlined in Items A, B and C of Minn. R. 7019.1000, subp. 3.

At the time of notification, the owner or operator shall inform the Commissioner of the cause of the shutdown and the estimated duration. The owner or operator shall notify the Commissioner when the shutdown is over. [Minn. R. 7019.1000, subp. 3]

TFAC 2 1730

Breakdown Notifications: Notify the Commissioner within 24 hours of a breakdown of more than one hour duration of any control equipment or process equipment if the breakdown causes any increase in the emissions of any regulated air pollutant. The 24‐hour time period starts when the breakdown was discovered or reasonably should have been discovered by the owner or operator. However, notification is not required in the circumstances outlined in Items A, B and C of Minn. R. 7019.1000, subp. 2.At the time of notification or as soon as possible thereafter, the owner or operator shall inform the Commissioner of the cause of the breakdown and the estimated duration. The owner or operator shall notify the Commissioner when the breakdown is over. [Minn. R. 7019.1000, subp. 2]

TFAC 2 1740

Notification of Deviations Endangering Human Health or the Environment: As soon as possible after discovery, notify the Commissioner or the state duty officer, either orally or by facsimile, of any deviation from permit conditions which could endanger human health or the environment. [Minn. R. 7019.1000, subp. 1]

TFAC 2 1760

Notification of Deviations Endangering Human Health or the Environment Report: Within 2 working days of discovery, notify the Commissioner in writing of any deviation from permit conditions which could endanger human health or the environment. Include the following information in this written description:1. the cause of the deviation; 2. the exact dates of the period of the deviation, if the deviation has been corrected;3. whether or not the deviation has been corrected; 4. the anticipated time by which the deviation is expected to be corrected, if not yet corrected; and 5. steps taken or planned to reduce, eliminate, and prevent reoccurrence of the deviation. [Minn. R. 7019.1000, subp. 1]

TFAC 2 1770

The Permittee shall submit a semiannual deviations report : Due semiannually, by the 30th of January and July. The first semiannual report submitted by the Permittee shall cover the calendar half‐year in which the permit is issued. The first report of each calendar year covers January 1 ‐ June 30. The second report of each calendar year covers July 1 ‐ December 31. Submit this on form DRF‐2 (Deviation Reporting Form). If no deviations have occurred, submit the signed report certifying that there were no deviations. [Minn. R. 7007.0800, subp. 6(A)(2)]

TFAC 2 1890

Application for Permit Amendment: If a permit amendment is needed, submit an application in accordance with the requirements of Minn. R. 7007.1150 through Minn. R. 7007.1500. Submittal dates vary, depending on the type of amendment needed.

Upon adoption of a new or amended federal applicable requirement, and if there are 3 or more years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [Minn. R. 7007.0400, subp. 3, Minn. R. 7007.1150 ‐ 7007.1500]

TFAC 2 2000

Extension Requests: The Permittee may apply for an Administrative Amendment to extend a deadline in a permit by no more than 120 days, provided the proposed deadline extension meets the requirements of Minn. R. 7007.1400, subp. 1(H). Performance testing deadlines from the General Provisions of 40 CFR pt. 60 and pt. 63 are examples of deadlines for which the MPCA does not have authority to grant extensions and therefore do not meet the requirements of Minn. R. 7007.1400, subp. 1(H). [Minn. R. 7007.1400, subp. 1(H)]

TFAC 2 2010

The Permittee shall submit a compliance schedule progress report : Due semiannually, by the 30th of January and July. The Compliance Schedule Progress Report shall contain the information specified in Minn. R. 7007.0800, subp. 6(B) and shall be submitted on a form approved by the Commissioner in accordance with the Compliance Schedule contained in Appendix N to this permit. Progress Reports will not be needed upon completion of all activities contained in the Compliance Schedule. [Minn. R. 7007.0800, subp. 6(B)]


TFAC 2 2020

The Permittee shall submit a report: Due semiannually, by the 30th of January and July that includes the information specified in 40 CFR Section 60.487. The report shall be submitted with the semiannual deviations report required by this permit. See subject item FUGI 15 of this permit for additional applicable requirements of 40 CFR pt. 60, subp. VV. [40 CFR 60.487(a), Minn. R. 7011.2900(A)]

TFAC 2 2030

The Permittee shall submit a compliance certification : Due annually, by the 31st of January (for the previous calendar year). Submit this on form CR‐04 (Annual Compliance Certification Report). This report covers all deviations experienced during the calendar year. If no deviations have occurred, submit the signed report certifying that there were no deviations. [Minn. R. 7007.0800, subp. 6(C)]

TFAC 2 2040

Emission Inventory Report: due on or before April 1 of each calendar year following permit issuance. Submit in a format specified by the Commissioner. [Minn. R. 7019.3000‐7019.3100]

TFAC 2 2050 Emission Fees: due 30 days after receipt of an MPCA bill. [Minn. R. 7002.0005‐7002.0095]

TFAC 2 2060

The Permittee must submit a Risk Management Plan (RMP) under 40 CFR pt. 68. Each owner or operator of a stationary source, at which a regulated substance is present above a threshold quantity in a process, shall design and implement an accidental release prevention program. An initial RMP must be submitted no later than the latest of the following dates: 1) June 21, 1999; 2) Three years after the date on which a regulated substance is first listed under 40 CFR Section 68.130; or 3) The date on which a regulated substance is first present above a threshold quantity in a process. A full update and resubmission of the RMP is required at least once every five years. The five‐year anniversary date is reset whenever the Permittee fully updates and resubmits their RMP. Submit RMPs to the Risk Management Plan Reporting Center, P.O. Box 1515, Lanham‐Seabrook, Maryland 20703‐1515. RMP information may be obtained at http://www.epa.gov/rmp or by calling 1‐800‐424‐9346. [40 CFR pt. 68]

TFAC 2 3854

The Permittee shall install and maintain fencing around the facility to preclude access to the facility. In areas where fencing is not permissible by setbacks, right‐of‐ways, safety concerns, or clearances, the Permittee shall install, maintain, and monitor cameras, and/or conduct patrols to sufficiently restrict public access to the property. Surveillance and patrol activities must be conducted at least once per 24‐hour period when the facility is in operation. In addition, the Permittee must install and maintain signs every 1,000 feet in unfenced areas. The signs must state "No Trespassing," or similar words, in 2‐inch high letters, and have the signature or name and telephone number of the landowner, lessee, or manager. Upon implementation of these measures, the Permittee shall update and maintain the Ambient Air Boundary Control Strategy Implementation Plan in Appendix F of this permit. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

TFAC 2 3855

Recordkeeping for Ambient Air Boundary Control Strategy Implementation Plan: The Permittee must record once each 24‐hour period surveillance and/or patrol actions. Failure to conduct required surveillance and/or patrols is considered a deviation and must be reported. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

TFAC 2 3856

Comply with Ambient Air Boundary Control Strategy Implementation (Plan): The Permittee shall follow the actions and recordkeeping specified in the Plan (Appendix F). A copy of the Plan and surveillance/patrol records must be maintained on site and available for inspection. The Permittee must update the Plan to reflect changes in surveillance, signage or patrols that occur within the effective fence line and receptor grid relied upon in the most recent air dispersion modeling analysis. A copy of the updated Plan must be maintained onsite. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

TFAC 2 3857

Ethanol Production: Daily Recordkeeping. On each day of operation, the Permittee shall calculate, record, and maintain records of the gallons of ethanol produced at the facility for the previous day. This shall be based on a flow meter measurement of 200‐proof ethanol transferred to the storage tanks. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TFAC 2 3858

Grain Throughput: Daily Recordkeeping. On each day of operation, the Permittee shall calculate, record, and maintain records of the tons of grain received by the facility for the previous day. This shall be based on grain receipts. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TFAC 2 3859

DDGS Throughput: Daily Recordkeeping. On each day of operation, the Permittee shall calculate, record, and maintain records of the tons of DDGS loadout by the facility for the previous day. This shall be based on loadout receipts. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]


TFAC 2 3860

Denaturant Throughput: Daily Recordkeeping. On each day of operation, the Permittee shall calculate, record, and maintain records of the denaturant throughput in gallons for the previous day. This shall be based on flow meters of denaturant exiting the denaturant storage tank. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TFAC 2 3861

Ethanol Production: Monthly Recordkeeping.By the 15th of the month, the Permittee shall calculate and record the following:1) The monthly gallons of undenatured ethanol produced during the previous calendar month using the daily ethanol production records; and2) The 12‐month rolling sum undenatured ethanol production in gallons for the previous 12‐month period by summing the monthly ethanol production data for the previous 12 months. [Minn. R. 7007.0800, subps. 4‐5]

TFAC 2 3862

Grain Throughput: Monthly Recordkeeping.By the 15th of the month, the Permi ee shall calculate and record the following:1) The monthly tons of grain received by the facility during the previous calendar month using the daily grain receipts; and2) The 12‐month rolling sum of grain throughput in tons for the previous 12‐month period by summing the monthly grain receipts for the previous 12 months. [Minn. R. 7007.0800, subps. 4‐5]

TFAC 2 3863

DDGS Throughput: Monthly Recordkeeping.By the 15th of the month, the Permi ee shall calculate and record the following:1) The monthly tons of DDGS loadout during the previous calendar month using the daily DDGS loadout records; and

2) The 12‐month rolling sum of DDGS loadout in tons for the previous 12‐month period by summing the monthly DDGS loadout data for the previous 12 months. [Minn. R. 7007.0800, subps. 4‐5]

TFAC 2 3864

Denaturant Throughput: Monthly Recordkeeping.By the 15th of the month, the Permi ee shall calculate and record the following:1) The monthly gallons of denaturant throughput during the previous calendar month using the daily denaturant throughput data; and2) The 12‐month rolling sum of denaturant throughput for the previous 12‐month period by summing the monthly denaturant throughput data for the previous 12 months. [Minn. R. 7007.0800, subps. 4‐5]

TFAC 2 3865

Changes/Modifications That May Trigger New Source Review and/or Part 63 Major Source Status Prohibited: This permit establishes limits on the facility to keep it a minor source under New Source Review and the National Emission Standards for Hazardous Air Pollutants (NESHAP) program. The Permittee cannot make any change at the source that qualifies as a Title I modification (as defined at Minn. R. 7007.0100, subp. 26) or that would make the facility a major source under New Source Review program or the NESHAP program until a permit amendment has been issued. This includes changes that might otherwise qualify as insignificant modifications and minor or moderate amendments. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TFAC 2 3866

Equipment Labeling: The Permittee must permanently affix a unique number to each added, modified, or replaced emissions unit, stack or control equipment (equipment) that has flexibility provisions for tracking purposes (See Appendix C). The numbers must be identified in a column in the Equipment Inventory (Appendix C), and correlate the unit to the appropriate EQUI, STRU and TREA numbers used in this permit. The number can be affixed by placard, stencil, or other means. The number must be maintained so that it is readable and visible at all times from a safe distance. If equipment is added or replaced, the equipment must be given a new unique number; numbers from replaced or removed equipment must not be reused. The Permittee must maintain any updates to the Equipment Inventory, including identification of facility‐specific identification numbers, at the facility. The updated Equipment Inventory must be submitted with each Annual Report. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subp. 5]


TFAC 2 3867

Equipment Inventory: The Permittee must maintain a written list of all emission units (EQUI), stacks (STRU), and control equipment (TREA) on site that have flexibility provisions. The Permittee must use the tables in Appendix C as the basis to maintain the list. Appropriate data must be entered for all applicable data fields in the Equipment Inventory to identify and characterize emission units, control equipment and stack parameters prior to making the change. If a facility‐specific identifier is used instead of the permit identifier, the Permittee must add the facility‐specific identifier to the Equipment Inventory. End dates must be entered when equipment is replaced or removed. Minn. R. 7007.1150 (C) for notifications does not apply to changes made at the facility that are pre‐authorized within this permit, and subject to the requirement to submit an annual equipment inventory.

Identify removed equipment in the tables with equipment data struck‐out. Identify modified equipment in the tables with current equipment data, and past equipment data struck.

The date of construction is the date of the change for replaced, modified, or new equipment. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subp. 5]

TFAC 2 3868

Process Flow Diagram: The Permittee must maintain an updated process flow diagram of the facility. [Minn. R. 7007.0800, subp. 2(A)]

COMG 6 1

Grain Receiving Process Throughput <= 7250 tons per day. This limit applies to all grain received at the grain receiving building (EQUI 20/EQUI 117 and EQUI 23/EQUI 118), including grain delivered from offsite and grain reclaimed from the temporary storage facility that is unloaded in the grain receiving building. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

COMG 6 2

The Permittee shall limit the hours of grain receiving operations at the grain receiving building (EQUI 20/EQUI 117 and EQUI 23/EQUI 118) to the hours of 7 AM to 7 PM each day. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

Flexible Language Annual Report: The Permittee must submit an Annual Report: due by 31 days after end of each calendar year following permit issuance. The Permittee must attach the Flexible Language Annual Report to the Annual Compliance Certification Report (Form CR‐04) by January 31st. The Equipment Inventory (Appendix C of this permit, as updated) identifies existing equipment, controls and stacks that may be modified by relying upon flexibility provisions contained within the permit. In the Flexible Language Annual Report, the Permi ee must:

1. Provide a statement that summarizes changes made to equipment, stacks or control equipment identified in the Equipment Inventory during the previous calendar year that relied upon flexible language for authorization. If no such changes were made, document this – no further informa on is required.2. For any new or modified emission unit, stack or control equipment identified in item 1 above, verify that the appendix contains all of the information needed to describe the change by referring to Forms GI‐04, GI‐05A and GI‐05B. Provide any missing data elements using the MPCA forms, or as an added column to the permit appendix tables. 3. Emission units with both direct and indirect emissions must submit the appropriate amendment application for direct emissions (e.g. new stack parameters on Form GI‐04, PTE calculations for direct emissions). If a permit amendment is not required (e.g., the change qualifies as an insignificant modification), attach the PTE calcula ons and Form GI‐04 for the direct emissions to the Flexible Language Annual Report.4. Include an updated copy of the Equipment Inventory that reflects the changes made. All data fields must be completed. The updated Equipment Inventory must reflect all changes made to the Equipment Inventory since permit issuance. 5. The Flexible Language Annual Report must be submitted with the annual Compliance Certification listed in Sec on 6 of this permit, in either hard‐copy or email.

6. For all changes made, the Responsible Official must verify and certify that "the facility has maintained minor source status for New Source Review and the NESHAP program, has not exceeded major modification thresholds under 40 CFR Section 52.21, and has continued to comply with all applicable permit requirements, including short‐term throughput limits, hourly emission limits and applicable control efficiencies.". [Minn. R. 7007.0800, subp. 2(A)]3869TFAC 2


COMG 6 3

The Permittee shall limit the days of grain receiving operations at the grain receiving building (EQUI 20/EQUI 117 and EQUI 23/EQUI 118) to Monday through Friday during the months of December through August.

The Permittee shall limit the days of grain receiving operations at the grain receiving building (EQUI 20/EQUI 117 and EQUI 23/EQUI 118) to Monday through Saturday during the months of September through November. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

COMG 6 4

The Permittee shall limit the number of straight truck grain unloading operations at the grain receiving building (EQUI 20/EQUI 117 and EQUI 23/EQUI 118) <= 14 straight truck grain unloading operations per day. This limit applies to all straight trucks that unload grain at the grain receiving building, including trucks delivering grain from offsite and trucks used to transfer grain from the temporary storage facility to the grain receiving building. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

COMG 6 5

Grain Receiving Process Throughput: Daily Recordkeeping. On each day of operation, the Permittee shall calculate, record, and maintain records of the tons of grain received at the grain receiving building (EQUI 20/EQUI 117 and EQUI 23/EQUI 118) for the previous operating day. This shall be based on grain receipts. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

COMG 6 6

Opera ng Hours: Daily Recordkeeping. On each day of opera on, the Permi ee shall record:1) the time and date of commencement of the first daily grain receiving operation at the grain receiving building; and2) the time and date of conclusion of the final daily grain receiving operation at the grain receiving building. These records shall be based on written logs and grain receipts. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

COMG 6 7

Straight Trucks: Daily Recordkeeping. On each day of operation, the Permittee shall calculate, record, and maintain a record of the total number of straight truck grain unloading operations at the grain receiving building (EQUI 20/EQUI 117 and EQUI 23/EQUI 118) for the previous operating day. This shall be based on written logs. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

EQUI 4 3680 Opacity <= 20 percent opacity. [Minn. R. 7011.0715, subp. 1(B)]

EQUI 4 3690

Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. [Minn. R. 7011.0715, subp. 1(A)]

EQUI 4 19650

The Permittee shall vent emissions from EQUI 4 to control equipment meeting the requirements of TREA 21 (Flare) whenever EQUI 4 operates. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

EQUI 6 3090

The Permittee is authorized to construct and operate EQUI 6, as defined by the emissions unit information in Appendix C of this permit.

The authorization to start construction of this equipment expires 5 years after issuance of Air Emissions Permit No. 11100077‐101. The unit shall meet all applicable permit requirements. [Minn. R. 7007.0800, subp. 2]

EQUI 6 3100

The Permittee shall submit a notification of the date construction began: Due 30 calendar days after Date of Construction Start (or reconstruction). Submit the name and number of the Subject Item and the date construc on began.

The notification shall be submitted electronically on Form CS‐02. [Minn. R. 7007.0800, subp. 16(L)]

EQUI 6 3110

The Permittee shall submit a notification of the actual date of initial startup: Due 15 calendar days after Initial Startup Date. Submit the name and number of the Subject Item and the date of startup. Startup is as defined in Minn. R. 7005.0100, subp. 42a.


EQUI 8 3390 Opacity <= 5 percent opacity from handling operation fugitive emissions. [Minn. R. 7011.1005, subp. 3(A)]


EQUI 8 3391

Visible Emissions: At least once each day of operation, the Permittee shall conduct visible emissions (VE) readings at the grain bin vent STRU 27 using the Alternative Test Method for Visual Emissions Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit while EQUI 8 is being filled with grain. If after one year of documented VE readings that no visible emissions are recorded, the Permittee may reduce the frequency to once each week of operation while EQUI 8 is being filled with grain. If visible emissions are observed, the Permittee must take corrective actions to eliminate visible emissions as soon as possible and must report a deviation, unless opacity readings conducted by the Permittee as described below are less than the opacity limit.

If the VE readings are conducted by a certified opacity reader, the Permittee has the option of immediately determining the opacity from the emissions source using the Alternative Test Method for Opacity Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit. If the opacity results are less than the permit requirement, the Permittee is not required to take further corrective actions, nor report a deviation. If after one year of documented opacity readings that no deviations are reported, the Permittee may reduce the frequency to once each week of operation while EQUI 8 is being filled with grain. If any corrective actions are to be reversed subsequent to the opacity readings (such as opening a door), a subsequent VE reading shall be conducted to verify that no visible emissions are present. The Permittee shall maintain records of all observations.

As an alternative to conducting the initial VE readings, the Permittee may determine initial compliance with the opacity limits using the Alternative Test Method for Opacity Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit using a certified observer. [Minn. R. 7007.0800, subp. 2(A)]

EQUI 8 3392

Corrective Actions: If visible emissions are observed, the Permittee must take corrective actions to eliminate visible emissions as soon as possible, unless the Permittee determines that the opacity is less than the permit requirement using the Alternative Test Method for Opacity Determination for Intermittent Dust Generating Operations. Corrective actions should include, but are not limited to, O&M and best management practices outlined in the Fugitive Emission Control Plan (FECP) for the operations. Corrective actions shall return the affected facility operation to a condition where there are no visible emissions. The Permittee shall maintain a record that describes the corrective actions taken. [Minn. R. 7007.0800, subp. 2(A)]

EQUI 8 3393

Recordkeeping of Visible Emissions. The Permittee shall maintain records as described in the Alternative Test Method for Visible Emissions Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit. If visible emissions are identified, the observer should note which equipment was in operation, which equipment or activity was the likely source of the visible emission, and weather conditions, such as wind direction and estimated speed. Identification of visible emissions is a deviation and must be reported, unless opacity readings less than the permit limits are observed and documented. [Minn. R. 7007.0800, subps. 4‐5]

EQUI 8 3394

Recordkeeping of Opacity Readings. The Permittee shall maintain records as described in the Alternative Test Method for Opacity Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit. If the permitted opacity limits are exceeded, the observer must note which equipment was in operation, which equipment or activity was the likely source of the opacity, and weather conditions, such as wind direction and estimated speed. An exceedance of the opacity limit is a deviation and must be reported. [Minn. R. 7007.0800, subps. 4‐5]



EQUI 9 3391




EQUI 9 3392


EQUI 9 3393


EQUI 9 3394


EQUI 10 3090

The Permittee is authorized to construct and operate EQUI 10 meeting the following design requirements:

Maximum storage silo capacity: 576,255 bushels

The authorization to start construction of this equipment expires 5 years after issuance of Air Emissions Permit No. 11100077‐101. The unit shall meet all applicable permit requirements. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]



EQUI 10 3110




EQUI 10 3390


EQUI 10 3391


EQUI 10 3392


EQUI 10 3393



EQUI 10 3394




EQUI 11 3090



EQUI 11 3100



EQUI 11 3110



EQUI 13 3090





EQUI 13 3110

The Permittee shall not operate EQUI 13 while any temporary storage facility is in place. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

EQUI 13 3390


If the VE readings are conducted by a certified opacity reader, the Permittee has the option of immediately determining the opacity from the emissions source using the Alternative Test Method for Opacity Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit. If the opacity results are less than the permit requirement, the Permittee is not required to take further corrective actions, nor report a deviation. If any corrective actions are to be reversed subsequent to the opacity readings (such as opening a door), a subsequent VE reading shall be conducted to verify that no visible emissions are present. The Permittee shall maintain records of all observations.



EQUI 13 3391


EQUI 13 3392


EQUI 13 3393


EQUI 13 3394



EQUI 13 3395



EQUI 14 3090



EQUI 14 3100



EQUI 14 3110



EQUI 16 3090






EQUI 16 3110

The Permittee shall not operate EQUI 16 while any temporary storage facility is in place. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

EQUI 16 3111




EQUI 16 3390


EQUI 16 3391


EQUI 16 3392


EQUI 16 3393



EQUI 16 3394




EQUI 18 12

Particulate Matter <= 0.40 grams per horsepower‐hour (0.54 g/kW‐hr). [40 CFR 60.4205(a), 40 CFR 63.6590(c), 40 CFR pt. 60, subp. IIII(Table 1), Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 18 13

Total Organic Compounds <= 1.0 grams per horsepower‐hour (1.30 g/kW‐hr). [40 CFR 60.4205(a), 40 CFR 63.6590(c), 40 CFR pt. 60, subp. IIII(Table 1), Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 18 14

Nitrogen Oxides <= 6.90 grams per horsepower‐hour (9.20 g/kW‐hr). [40 CFR 60.4205(a), 40 CFR 63.6590(c), 40 CFR pt. 60, subp. IIII(Table 1), Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 18 15

Carbon Monoxide <= 8.50 grams per horsepower‐hour (0.540 g/kW‐hr). [40 CFR 60.4205(a), 40 CFR 63.6590(c), 40 CFR pt. 60, subp. IIII(Table 1), Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 18 18 Opacity <= 20 percent opacity once operating temperatures have been attained. [Minn. R. 7011.2300, subp. 1]

EQUI 18 3520

Sulfur Dioxide <= 0.0015 pounds per million Btu heat input. The potential to emit from the unit is 0.0015 lb/MMBtu due to equipment design and allowable fuels. [Minn. R. 7011.2300, subp. 2(B)]

EQUI 18 3560

Fuel type: Diesel fuel meeting the requirements of 40 CFR Section 80.510(b) for nonroad diesel fuel only, except that any existing diesel fuel purchased (or otherwise obtained) prior to October 1, 2010, may be used until depleted. [40 CFR 60.4207(b), 40 CFR 63.6590(c), Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 18 3565

Sulfur Content of Fuel <= 15.0 parts per million and either a minimum cetane index of 40 or a maximum aromatic content of 35 percent by volume, as required by 40 CFR Section 80.510(b). [40 CFR 60.4207(b), 40 CFR 63.6590(c), Minn. R. 7005.0100, subp. 35a, Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 18 3830

Hours of Operation: The Permittee shall maintain documentation on site that the unit is an emergency generator by design that qualifies under the U.S. EPA memorandum entitled "Calculating Potential to Emit (PTE) for Emergency Generators" dated September 6, 1995, limiting operation to 500 hours per year. [Minn. R. 7007.0800, subps. 4‐5]

EQUI 18 3840 The Permittee shall keep records of fuel type and usage on a monthly basis. [Minn. R. 7007.0800, subp. 5]

EQUI 18 3850

Fuel Supplier Certification: The Permittee shall obtain and maintain a fuel supplier certification for each shipment of diesel fuel oil, certifying that the sulfur content does not exceed 0.0015 percent by weight. [Minn. R. 7007.0800, subps. 4‐5]

EQUI 18 19531

The Permittee must comply with all applicable requirements of 40 CFR pt. 60, subp. IIII as follows:

40 CFR 60.4200(a)(2)(i); 40 CFR 60.4205(a); 40 CFR 60.4206; 40 CFR 60.4207(b); 40 CFR 60.4209(a); 40 CFR 60.4211(a); 40 CFR 60.4211(b); 40 CFR 60.4211(f)(1); 40 CFR 60.4211(f)(2)(i); 40 CFR 60.4211(f)(3); 40 CFR 60.4211(g)(3); 40 CFR 60.4214(b); 40 CFR 60.4218; 40 CFR 60.4219; 40 CFR pt. 60, subp. IIII, Table 1; and 40 CFR pt. 60, subp. IIII, Table 8.

A copy of 40 CFR pt. 60, subp. IIII is included in Appendix J. If the standard changes or upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [40 CFR 63.6590(c), 40 CFR pt. 60, subp. IIII, Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 18 19532

The Permittee must comply with all applicable requirements of 40 CFR pt. 60, subp. A as follows:

40 CFR 60.1(a)‐(c); 40 CFR 60.2; 40 CFR 60.3; 40 CFR 60.4; 40 CFR 60.5(a)‐(b); 40 CFR 60.6(a)‐(b); 40 CFR 60.7(a)(1), (a)(3)‐(a)(7), and (b)‐(d); 40 CFR 60.8(a)‐(i); 40 CFR 60.9; 40 CFR 60.12; 40 CFR 60.14(a)‐(c) and (e)‐(l); 40 CFR 60.15(a)‐(g); 40 CFR 60.17; and 40 CFR 60.19(a)‐(f).

A copy of 40 CFR pt. 60, subp. A is included in Appendix K. If the standard changes or upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [40 CFR 60.4218, 40 CFR 63.6590(c), 40 CFR pt. 60, subp. A, 40 CFR pt. 60, subp. IIII(Table 8), Minn. R. 7007.0400, subp. 3, Minn. R. 7007.1150‐1500, Minn. R. 7011.0050, Minn. R. 7011.2305, Minn. R. 7011.8150, Minn. R. 7017.1010 & 7017.2025, Minn. R. 7019.0100]

EQUI 18 19533

EQUI 18 is a new affected source as defined under 40 CFR pt. 63, subp. ZZZZ, and the facility is an area source as defined at 40 CFR Section 63.2, and EQUI 18 is a compression‐ignition (CI) RICE with a site rating of less than 1,700 brake HP. The Permittee shall meet the requirements of 40 CFR pt. 63, subp. ZZZZ by meeting the requirements of 40 CFR pt. 60, subp. IIII. No further requirements of 40 CFR pt. 63, subp. ZZZZ apply to EQUI 18. [40 CFR 63.6590(c), Minn. R. 7011.8150]


EQUI 18 19534

Best Management Prac ces for Reciproca ng Internal Combus on Engines (RICE) The Permittee must use engine best management practices (BMPs) to minimize the release of pollutants as defined in this permit for EQUI 18. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

EQUI 18 19535

Best Management Practices for RICE1. The Permittee shall only use diesel fuel with a sulfur content of less than or equal to 15 ppm in EQUI 18.2. The Permittee may not install a rain cap on STRU 36 or STRU 37.3. The Permittee may install and operate a hinged flapper which is opened by the exhaust flow from STRU 36 or STRU 37. There shall be no flow obstruction at the point of discharge that inhibits vertical dispersion. The Permittee shall inspect the hinged flapper (i.e. tip‐up rain cap) once per calendar month to make sure it is operating per the manufacturer's specifications and is not impeding the vertical flow of exhaust from STRU 36 or STRU 37. The Permittee shall keep records of these monthly inspections.4. The Permittee shall make the test runs for EQUI 18 as short as allowed by insurance and building code considerations.

5. Testing shall be limited to no more than one hour once every calendar month.

6. The testing for EQUI 18 shall not occur while another emergency engine is being tested.7. No testing shall be conducted on a day the Air Quality Index (AQI) or the forecasted AQI exceeds 90 unless the test cannot be deferred. For testing conducted on a day with the AQI above 90, document the reason it was not possible to defer the test and any actions that were taken to limit emissions during the test with the testing records. 8. The AQI and the forecasted AQI can be found at: http://www.pca.state.mn.us/index.php/air/air‐quality‐and‐pollutants/general‐air‐quality/air‐quality‐index/current‐air‐quality‐index.html. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

EQUI 18 19536

During every test of EQUI 18, the Permi ee shall record the following informa on:

1) The engine being tested;2) The date;3) The me the test started;4) The me the test was completed; and5) The Air Quality Index (AQI). [Minn. R. 7007.0800, subps. 4‐5]

EQUI 35 11 Fuel type: natural gas and propane (as a back‐up fuel) only, by design. [Minn. R. 7005.0100, subp. 35a]

EQUI 35 4600


40 CFR 60.1(a)‐(c);40 CFR 60.2;40 CFR 60.3;40 CFR 60.4;40 CFR 60.5(a)‐(b);40 CFR 60.6(a)‐(b);40 CFR 60.7(a)(4) and (b);40 CFR 60.9;40 CFR 60.11(d) and (f)‐(g);40 CFR 60.12;40 CFR 60.14(a)‐(c) and (e)‐(g);40 CFR 60.15(a)‐(g);40 CFR 60.17; and 40 CFR 60.19(a)‐(e) and (f)(1)‐(f)(4).

A copy of 40 CFR pt. 60, subp. A is included in Appendix K. If the standard changes or upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [40 CFR pt. 60, subp. A, Minn. R. 7007.0400, subp. 3, Minn. R. 7007.1150‐1500, Minn. R. 7011.0050, Minn. R. 7017.1010 & 7017.2025, Minn. R. 7019.0100]

EQUI 35 4830

Recordkeeping: By the last day of each calendar month, the Permittee shall record the amount of natural gas combusted in the boilers during the previous calendar month. These records shall consist of purchase records, receipts, or fuel meter readings. [40 CFR 60.48c(g), Minn. R. 7011.0570]

EQUI 35 4831

Natural gas means:

(1) A naturally occurring mixture of hydrocarbon and nonhydrocarbon gases found in geologic formations beneath the earth's surface, of which the principal constituent is methane; or(2) Liquefied petroleum (LP) gas, as defined by the American Society for Testing and Materials in ASTM D1835 (incorporated by reference, see 40 CFR Section 60.17); or(3) A mixture of hydrocarbons that maintains a gaseous state at ISO conditions. Additionally, natural gas must either be composed of at least 70 percent methane by volume or have a gross calorific value between 34 and 43 megajoules (MJ) per dry standard cubic meter (910 and 1,150 Btu per dry standard cubic foot). [40 CFR 60.41c, Minn. R. 7011.0570]


EQUI 36 3580 Fuel type: natural gas and propane (as a back‐up fuel) only, by design. [Minn. R. 7005.0100, subp. 35a]

EQUI 36 4600


40 CFR 60.1(a)‐(c);40 CFR 60.2;40 CFR 60.3;40 CFR 60.4;40 CFR 60.5(a)‐(b);40 CFR 60.6(a)‐(b);40 CFR 60.7(a)(4) and (b);40 CFR 60.9;40 CFR 60.11(d) and (f)‐(g);40 CFR 60.12;40 CFR 60.14(a)‐(c) and (e)‐(g);40 CFR 60.15(a)‐(g);40 CFR 60.17; and 40 CFR 60.19(a)‐(e) and (f)(1)‐(f)(4).


EQUI 36 4830

Recordkeeping: By the last day of each calendar month, the Permittee shall record the amount of natural gas combusted in the boilers during the previous calendar month. These records shall consist of purchase records, receipts, or fuel meter readings. [40 CFR 60.48c(g), Minn. R. 7011.0570]

EQUI 36 4831

Natural gas means:

(1) A naturally occurring mixture of hydrocarbon and nonhydrocarbon gases found in geologic formations beneath the earth's surface, of which the principal constituent is methane; or(2) Liquefied petroleum (LP) gas, as defined by the American Society for Testing and Materials in ASTM D1835 (incorporated by reference, see 40 CFR Section 60.17); or(3) A mixture of hydrocarbons that maintains a gaseous state at ISO conditions. Additionally, natural gas must either be composed of at least 70 percent methane by volume or have a gross calorific value between 34 and 43 megajoules (MJ) per dry standard cubic meter (910 and 1,150 Btu per dry standard cubic foot). [40 CFR 60.41c, Minn. R. 7011.0570]

EQUI 55 5

See subject items STRU 26, STRU 79, and TREA 25 of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

EQUI 55 6

Opacity <= 20 percent opacity except for one six‐minute period per hour of not more than 60 percent opacity. [Minn. R. 7011.0610, subp. 1(A)(2)]

EQUI 55 3450

Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. [Minn. R. 7011.0610, subp. 1(A)(1)]

EQUI 55 3460 Fuel type: natural gas only, by design. [Minn. R. 7005.0100, subp. 35a]

EQUI 55 19650

The Permittee shall vent emissions from EQUI 55 to control equipment meeting the requirements of TREA 25 (Thermal Oxidizer) whenever EQUI 55 operates, except as otherwise authorized by this permit. When a shutdown or breakdown of TREA 25 occurs, the Permittee shall stop wetcake feed to the dryer as soon as TREA 25 is shutdown or the breakdown is discovered. See subject item STRU 79 (RTO Bypass Stack) of this permit for requirements pertaining to emergency bypass of the thermal oxidizer. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

EQUI 55 19651

During periods when EQUI 55 is not processing wetcake (such as periods of dryer startup), the Permittee is authorized to vent emissions from EQUI 55 to STRU 79 (RTO Bypass Stack), up to a maximum of 50 hours per year. See subject item STRU 79 of this permit for related requirements pertaining to authorized bypass of the thermal oxidizer. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

EQUI 55 19652

The Permittee shall operate and maintain the dryer in accordance with the Operation and Maintenance (O & M) Plan. The Permittee shall keep copies of the O & M Plan available onsite for use by staff and MPCA staff. [Minn. R. 7007.0800, subp. 2(A)]

EQUI 56 3680

See subject items STRU 26, STRU 80, TREA 25, and TREA 39 of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]


EQUI 56 19650



EQUI 56 19651

The Permittee shall vent emissions from EQUI 56 to control equipment meeting the requirements of TREA 39 (DDGS Cooler Baghouse) whenever EQUI 56 operates. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

EQUI 56 19652

The Permittee is authorized to vent emissions from EQUI 56 to STRU 26 (DDGS with Thermal Oxidizer) and STRU 80 (DDGS Cooler Baghouse Stack).

1. STRU 26 (RTO). When emissions are venting to STRU 26, the Permittee shall vent emissions from EQUI 55 to control equipment meeting the requirements of TREA 25 (Thermal Oxidizer). See subject items STRU 26 and TREA 25 of this permit for applicable emission limits and related requirements when emissions are venting to STRU 26.

2. STRU 80 (Dryer Burner and RTO Bypass). The Permittee is authorized to bypass the dryer burners and the RTO and vent emissions from EQUI 56 to STRU 80, up to a maximum of 50 hours per year. See subject item STRU 80 of this permit for related requirements pertaining to authorized bypass and emergency bypass of the dryer burners and thermal oxidizer. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]


EQUI 58 3690


EQUI 58 3691

The Permittee shall equip EQUI 58 with a fixed roof in combination with an internal floating roof. The Permittee shall operate and maintain the internal floating roof whenever EQUI 58 is operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

EQUI 58 3692

The Permittee shall visually inspect the internal floating roof and the primary seal, or the secondary seal through manholes and roof hatches on the fixed roof at least once every 12 months. If the internal floating roof is not resting on the surface of the volatile organic liquid inside the storage vessel, or there is liquid accumulated on the roof, or the seal is detached, or there are holes or tears in the seal fabric, the Permittee shall repair the items or empty and remove the storage vessel from service within 45 days. If a failure that is detected during inspections cannot be repaired within 45 days and if the vessel cannot be emptied within 45 days, a 30‐day extension may be requested from the Commissioner. Such a request for an extension must document that alternate storage capacity is unavailable and specify a schedule of actions the Permittee will take that will assure that the control equipment will be repaired or the vessel will be emptied as soon as possible. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

EQUI 58 3693

Internal Inspections: The Permittee shall conduct internal inspections at intervals no greater than 10 years. The Permittee shall visually inspect the internal floating roof, the primary seal, the secondary seal, gaskets, slotted membranes and sleeve seals (if any) each time the storage vessel is emptied and degassed. If the internal floating roof has defects, the primary or secondary seal has holes, tears, or other openings in the seal or the seal fabric, or the gaskets no longer close off the liquid surfaces from the atmosphere, or the slotted membrane has more than 10 percent open area, the Permittee shall repair the items so that none of these conditions exist before refilling the storage vessel. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

EQUI 58 3694

The Permi ee shall maintain the following records:1) a record of each inspection performed as required by this permit. Each record shall identify the storage vessel on which the inspection was performed and shall contain the date the vessel was inspected and the observed condi on of each component of the control equipment (seals, internal floa ng roof, and fi ngs); and2) for each inspection that finds holes or tears in the seal or seal fabric, or defects in the internal floating roof, or other control equipment defects, a record identifying the storage vessel, each observed failure or defect, and each repair made. [Minn. R. 7007.0800, subps. 4‐5]


EQUI 59 3690



EQUI 59 3691

The Permittee shall equip EQUI 59 with a fixed roof in combination with an internal floating roof. The Permittee shall operate and maintain the internal floating roof whenever EQUI 59 is operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

EQUI 59 3692

The Permittee shall visually inspect the internal floating roof and the primary seal, or the secondary seal through manholes and roof hatches on the fixed roof at least once every 12 months. If the internal floating roof is not resting on the surface of the volatile organic liquid inside the storage vessel, or there is liquid accumulated on the roof, or the seal is detached, or there are holes or tears in the seal fabric, the Permittee shall repair the items or empty and remove the storage vessel from service within 45 days. If a failure that is detected during inspections cannot be repaired within 45 days and if the vessel cannot be emptied within 45 days, a 30‐day extension may be requested from the Commissioner. Such a request for an extension must document that alternate storage capacity is unavailable and specify a schedule of actions the Permittee will take that will assure that the control equipment will be repaired or the vessel will be emptied as soon as possible. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

EQUI 59 3693

Internal Inspections: The Permittee shall conduct internal inspections at intervals no greater than 10 years. The Permittee shall visually inspect the internal floating roof, the primary seal, the secondary seal, gaskets, slotted membranes and sleeve seals (if any) each time the storage vessel is emptied and degassed. If the internal floating roof has defects, the primary or secondary seal has holes, tears, or other openings in the seal or the seal fabric, or the gaskets no longer close off the liquid surfaces from the atmosphere, or the slotted membrane has more than 10 percent open area, the Permittee shall repair the items so that none of these conditions exist before refilling the storage vessel. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

EQUI 59 3694

The Permi ee shall maintain the following records:1) a record of each inspection performed as required by this permit. Each record shall identify the storage vessel on which the inspection was performed and shall contain the date the vessel was inspected and the observed condi on of each component of the control equipment (seals, internal floa ng roof, and fi ngs); and2) for each inspection that finds holes or tears in the seal or seal fabric, or defects in the internal floating roof, or other control equipment defects, a record identifying the storage vessel, each observed failure or defect, and each repair made. [Minn. R. 7007.0800, subps. 4‐5]

EQUI 60 4600

The Permi ee must comply with all applicable requirements of 40 CFR pt. 60, subp. Kb as follows:

40 CFR 60.110b(a); 40 CFR 60.111b; 40 CFR 60.112b(a); 40 CFR 60.112b(a)(1)(i); 40 CFR 60.112b(a)(1)(ii)(B); 40 CFR 60.112b(a)(1)(iii)‐(ix); 40 CFR 60.113b(a)(1); 40 CFR 60.113b(a)(3)(ii); 40 CFR 60.113b(a)(4); 40 CFR 60.113b(a)(5); 40 CFR 60.115b(a)(1); 40 CFR 60.115b(a)(2); 40 CFR 60.115b(a)(4); 40 CFR 60.116b(a); and 40 CFR 60.116b(c).

A copy of 40 CFR pt. 60, subp. Kb is included in Appendix H.

If the standard changes or upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [40 CFR pt. 60, subp. Kb, Minn. R. 7011.1520(C)]

EQUI 60 20380

The Permittee shall visually inspect the internal floating roof and the primary seal, or the secondary seal through manholes and roof hatches on the fixed roof at least once every 12 months after initial fill. If the internal floating roof is not resting on the surface of the VOL inside the storage vessel, or there is liquid accumulated on the roof, or the seal is detached, or there are holes or tears in the seal fabric, the Permittee shall repair the items or empty and remove the storage vessel from service within 45 days. If a failure that is detected during inspections cannot be repaired within 45 days and if the vessel cannot be emptied within 45 days, a 30‐day extension may be requested from the Administrator in the inspection report required in 40 CFR 60.115b(a)(3). Such a request for an extension must document that alternate storage capacity is unavailable and specify a schedule of actions the company will take that will assure that the control equipment will be repaired or the vessel will be emptied as soon as possible. [40 CFR 60.113b(a)(3)(ii), Minn. R. 7011.1520(C)]


EQUI 60 20510

Internal Inspections: The Permittee shall conduct internal inspections at intervals no greater than 10 years. The Permittee shall visually inspect the internal floating roof, the primary seal, the secondary seal, gaskets, slotted membranes and sleeve seals (if any) each time the storage vessel is emptied and degassed. If the internal floating roof has defects, the primary or secondary seal has holes, tears, or other openings in the seal or the seal fabric, or the gaskets no longer close off the liquid surfaces from the atmosphere, or the slotted membrane has more than 10 percent open area, the Permittee shall repair the items so that none of these conditions exist before refilling the storage vessel. [40 CFR 60.113b(a)(4), Minn. R. 7011.1520(C)]

EQUI 60 20620

The Permi ee must comply with all applicable requirements of 40 CFR pt. 60, subp. A as follows:

40 CFR 60.7(a)(4), (b), and (f); 40 CFR 60.8; 40 CFR 60.12; and 40 CFR 60.18.

A copy of 40 CFR pt. 60, subp. A is included in Appendix K. If the standard changes or upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [40 CFR pt. 60, subp. A, 40 CFR pt. 60, subp. Kb, Minn. R. 7007.0400, subp. 3, Minn. R. 7007.1150‐7007.1500, Minn. R. 7011.0050, Minn. R. 7011.1520(C), Minn. R. 7017.1010 & 7017.2025, Minn. R. 7019.0100]

EQUI 60 20631

The Permittee shall equip EQUI 60 with a floating roof, a vapor recovery system, or their equivalents. [Minn. R. 7011.1505, subp. 3(C)(1)]

EQUI 60 20632

The Permi ee shall maintain a file of:i. each type of petroleum liquid stored in EQUI 60;ii. the typical Reid vapor pressure of each type of petroleum liquid stored in EQUI 60;iii. the dates of storage and withdrawals from EQUI 60; andiv. the date on which EQUI 60 is empty. [Minn. R. 7011.1510, subp. 1(A)]

EQUI 60 20633

The true vapor pressure shall be determined by the procedure in American Petroleum Institute Bulletin 2517. This procedure is dependent upon determination of the storage temperature and the Reid vapor pressure, which requires sampling of the petroleum liquids in the storage vessels. Unless the agency or the commissioner requires in specific cases that the stored petroleum liquid be sampled, the true vapor pressure may be determined by using the average monthly storage temperature and the typical Reid vapor pressure. For those liquids for which certified specifications limiting the Reid vapor pressure exist, that Reid vapor pressure may be used. For other liquids, supporting analytical data must be made available on request of the agency or the commissioner when typical Reid vapor pressure is used. [Minn. R. 7011.1510, subp. 3]

EQUI 61 4600

The Permittee must comply with all applicable requirements of 40 CFR pt. 60, subp. Kb as follows:

40 CFR 60.110b(a);40 CFR 60.111b;40 CFR 60.112b(a);40 CFR 60.112b(a)(1)(i);40 CFR 60.112b(a)(1)(ii)(B);40 CFR 60.112b(a)(1)(iii)‐(ix);40 CFR 60.113b(a)(1);40 CFR 60.113b(a)(3)(ii);40 CFR 60.113b(a)(4);40 CFR 60.113b(a)(5);40 CFR 60.115b(a)(1);40 CFR 60.115b(a)(2);40 CFR 60.115b(a)(4);40 CFR 60.116b(a); and 40 CFR 60.116b(c).



EQUI 61 20380



EQUI 61 20510


EQUI 61 20620




EQUI 61 20631


EQUI 61 20632

The Permittee shall maintain a file of:i. each type of petroleum liquid stored in EQUI 61;ii. the typical Reid vapor pressure of each type of petroleum liquid stored in EQUI 61;iii. the dates of storage and withdrawals from EQUI 61; andiv. the date on which EQUI 61 is empty. [Minn. R. 7011.1510, subp. 1(A)]

EQUI 61 20633


EQUI 62 4600

The Permittee must comply with all applicable requirements of 40 CFR pt. 60, subp. Kb as follows:

40 CFR 60.110b(a);40 CFR 60.111b;40 CFR 60.112b(a);40 CFR 60.112b(a)(1)(i);40 CFR 60.112b(a)(1)(ii)(B);40 CFR 60.112b(a)(1)(iii)‐(ix);40 CFR 60.113b(a)(1);40 CFR 60.113b(a)(3)(ii);40 CFR 60.113b(a)(4);40 CFR 60.113b(a)(5);40 CFR 60.115b(a)(1);40 CFR 60.115b(a)(2);40 CFR 60.115b(a)(4);40 CFR 60.116b(a); and 40 CFR 60.116b(c).



EQUI 62 20380



EQUI 62 20510


EQUI 62 20620




EQUI 62 20631


EQUI 62 20632

The Permittee shall maintain a file of:i. each type of petroleum liquid stored in EQUI 62;ii. the typical Reid vapor pressure of each type of petroleum liquid stored in EQUI 62;iii. the dates of storage and withdrawals from EQUI 62; andiv. the date on which EQUI 62 is empty. [Minn. R. 7011.1510, subp. 1(A)]

EQUI 62 20633


EQUI 108 13

Particulate Matter <= 0.40 grams per horsepower‐hour (0.540 g/kW‐hr). [40 CFR 60.4205(c), 40 CFR 63.6590(c), 40 CFR pt. 60, subp. IIII(Table 4), Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 108 3520

NMHC+NOx <= 7.80 grams per horsepower‐hour (10.50 g/kW‐hr). [40 CFR 60.4205(c), 40 CFR 63.6590(c), 40 CFR pt. 60, subp. IIII(Table 4), Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 108 3525

Carbon Monoxide <= 2.60 grams per horsepower‐hour (3.50 g/kW‐hr). [40 CFR 60.4205(c), 40 CFR 63.6590(c), 40 CFR pt. 60, subp. IIII(Table 4), Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 108 3535 Opacity <= 20 percent opacity once operating temperatures have been attained. [Minn. R. 7011.2300, subp. 1]

EQUI 108 3540

Sulfur Dioxide <= 0.0015 pounds per million Btu heat input. The potential to emit from the unit is 0.0015 lb/MMBtu due to equipment design and allowable fuels. [Minn. R. 7011.2300, subp. 2(B)]

EQUI 108 3550

Fuel type: Diesel fuel meeting the requirements of 40 CFR Section 80.510(b) for nonroad diesel fuel only, except that any existing fuel purchased (or otherwise obtained) prior to October 1, 2010, may used until depleted. [40 CFR 60.4207(b), 40 CFR 63.6590(c), Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 108 3560

Sulfur Content of Fuel <= 15.0 parts per million and either a minimum cetane index of 40 or a maximum aromatic content of 35 percent by volume, as required by 40 CFR Section 80.510(b). [40 CFR 60.4207(b), 40 CFR 63.6590(c), Minn. R. 7005.0100, subp. 35a, Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 108 5310

Hours of Operation: The Permittee shall maintain documentation on site that the unit is an emergency generator by design that qualifies under the U.S. EPA memorandum entitled "Calculating Potential to Emit (PTE) for Emergency Generators" dated September 6, 1995, limiting operation to 500 hours per year. [Minn. R. 7007.0800, subps. 4‐5]

EQUI 108 5320 The Permittee shall keep records of fuel type and usage on a monthly basis. [Minn. R. 7007.0800, subp. 5]


EQUI 108 5330

Fuel Supplier Certification: The Permittee shall obtain and maintain a fuel supplier certification for each shipment of diesel fuel oil, certifying that the sulfur content does not exceed 0.0015 percent by weight. [Minn. R. 7007.0800, subps. 4‐5]

EQUI 108 5620

The Permittee must comply with all applicable requirements of 40 CFR pt. 60, subp. IIII as follows:

40 CFR 60.4200(a)(2)(ii);40 CFR 60.4205(c);40 CFR 60.4206;40 CFR 60.4207(b);40 CFR 60.4209(a);40 CFR 60.4211(a);40 CFR 60.4211(b);40 CFR 60.4211(f)(1);40 CFR 60.4211(f)(2)(i);40 CFR 60.4211(f)(3);40 CFR 60.4211(g)(2);40 CFR 60.4214(b);40 CFR 60.4218;40 CFR 60.4219;40 CFR pt. 60, subp. IIII, Table 4; and40 CFR pt. 60, subp. IIII, Table 8.

A copy of 40 CFR pt. 60, subp. IIII is included in Appendix J. If the standard changes or upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [40 CFR 63.6590(c), 40 CFR pt. 60, subp. IIII, Minn. R. 7011.2305, Minn. R. 7011.8150]

EQUI 108 19530


40 CFR 60.1(a)‐(c); 40 CFR 60.2; 40 CFR 60.3; 40 CFR 60.4; 40 CFR 60.5(a)‐(b); 40 CFR 60.6(a)‐(b); 40 CFR 60.7(a)(1), (a)(3)‐(a)(7), and (b)‐(d); 40 CFR 60.8(a)‐(i); 40 CFR 60.9; 40 CFR 60.12; 40 CFR 60.14(a)‐(c) and (e)‐(l); 40 CFR 60.15(a)‐(g); 40 CFR 60.17; and 40 CFR 60.19(a)‐(f).

A copy of 40 CFR pt. 60, subp. A is included in Appendix K. If the standard changes or upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [40 CFR 60.4218, 40 CFR pt. 60, subp. A, 40 CFR pt. 60, subp. IIII(Table 8), Minn. R. 7007.0400, subp. 3, Minn. R. 7007.1150‐1500, Minn. R. 7011.0050, Minn. R. 7011.2305, Minn. R. 7017.1010 & 7017.2025, Minn. R. 7019.0100]

EQUI 108 19531

EQUI 108 is a new affected source as defined under 40 CFR pt. 63, subp. ZZZZ, and the facility is an area source as defined at 40 CFR Section 63.2, and EQUI 108 is a compression‐ignition (CI) RICE with a site rating of less than 460 brake HP. The Permittee shall meet the requirements of 40 CFR pt. 63, subp. ZZZZ by meeting the requirements of 40 CFR pt. 60, subp. IIII. No further requirements of 40 CFR pt. 63, subp. ZZZZ apply to EQUI 108. [40 CFR 63.6590(c), Minn. R. 7011.8150]

EQUI 108 19532

Best Management Prac ces for Reciproca ng Internal Combus on Engines (RICE) The Permittee must use engine best management practices (BMPs) to minimize the release of pollutants as defined in this permit for EQUI 108. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]


EQUI 108 19533

Best Management Prac ces for RICE1. The Permi ee shall only use diesel fuel with a sulfur content of less than or equal to 15 ppm in EQUI 108.2. The Permi ee may not install a rain cap on STRU 32.3. The Permittee may install and operate a hinged flapper which is opened by the exhaust flow from STRU 32. There shall be no flow obstruction at the point of discharge that inhibits vertical dispersion. The Permittee shall inspect the hinged flapper (i.e. tip‐up rain cap) once per calendar month to make sure it is operating per the manufacturer's specifications and is not impeding the vertical flow of exhaust from STRU 32. The Permittee shall keep records of these monthly inspec ons.

4. The Permittee shall make the test runs for EQUI 108 as short as allowed by insurance and building code considera ons.

5. Tes ng shall be limited to no more than one hour once every calendar month.

6. The tes ng for EQUI 108 shall not occur while another emergency engine is being tested.7. No testing shall be conducted on a day the Air Quality Index (AQI) or the forecasted AQI exceeds 90 unless the test cannot be deferred. For testing conducted on a day with the AQI above 90, document the reason it was not possible to defer the test and any actions that were taken to limit emissions during the test with the testing records. 8. The AQI and the forecasted AQI can be found at: http://www.pca.state.mn.us/index.php/air/air‐quality‐and‐pollutants/general‐air‐quality/air‐quality‐index/current‐air‐quality‐index.html. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

EQUI 108 19534

During every test of EQUI 108, the Permi ee shall record the following informa on:

1) The engine being tested;2) The date;3) The me the test started;4) The me the test was completed; and5) The Air Quality Index (AQI). [Minn. R. 7007.0800, subps. 4‐5]


EQUI 116 3690


EQUI 116 19650

The Permittee shall vent emissions from EQUI 116 to control equipment meeting the requirements of TREA 21 (Flare) whenever EQUI 116 operates. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

EQUI 117 3350

See subject item COMG 6 of this permit for applicable limits on grain throughput and hours of operation. [Minn. R. 7007.0800, subp. 2(A)]

EQUI 117 3360 Opacity <= 5 percent opacity from truck unloading stations fugitive emissions. [Minn. R. 7011.1005, subp. 3(A)]

EQUI 117 3361



EQUI 117 3362

Visible Emissions: At least once each day of operation, the Permittee shall conduct visible emissions (VE) readings at the downwind Grain Receiving/DDGS Loadout Building door using the Alternative Test Method for Visual Emissions Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit while grain is being received. If after one year of documented VE readings that no visible emissions are recorded, the Permittee may reduce the frequency to once each week of operation while grain is being received. If visible emissions are observed, the Permittee must take corrective actions to eliminate visible emissions as soon as possible and must report a deviation, unless opacity readings conducted by the Permittee as described below are less than the opacity limit.

If the VE readings are conducted by a certified opacity reader, the Permittee has the option of immediately determining the opacity from the emissions source using the Alternative Test Method for Opacity Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit. If the opacity results are less than the permit requirement, the Permittee is not required to take further corrective actions, nor report a deviation. If after one year of documented opacity readings that no deviations are reported, the Permittee may reduce the frequency to once each week of operation while grain is being received. If any corrective actions are to be reversed subsequent to the opacity readings (such as opening a door), a subsequent VE reading shall be conducted to verify that no visible emissions are present. The Permittee shall maintain records of all observations.


EQUI 117 3363


EQUI 117 3364


EQUI 117 3394


EQUI 118 3350

See subject item COMG 6 of this permit for applicable limits on grain throughput and hours of operation. [Minn. R. 7007.0800, subp. 2(A)]

EQUI 118 3360 Opacity <= 5 percent opacity from truck unloading stations fugitive emissions. [Minn. R. 7011.1005, subp. 3(A)]

EQUI 118 3361



EQUI 118 3362

Visible Emissions: At least once each day of operation, the Permittee shall conduct visible emissions (VE) readings at the downwind Grain Receiving/DDGS Loadout Building door using the Alternative Test Method for Visual Emissions Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit while grain is being received. If after one year of documented VE readings that no visible emissions are recorded, the Permittee may reduce the frequency to once each week of operation while grain is being received. If visible emissions are observed, the Permittee must take corrective actions to eliminate visible emissions as soon as possible and must report a deviation, unless opacity readings conducted by the Permittee as described below are less than the opacity limit.

If the VE readings are conducted by a certified opacity reader, the Permittee has the option of immediately determining the opacity from the emissions source using the Alternative Test Method for Opacity Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit. If the opacity results are less than the permit requirement, the Permittee is not required to take further corrective actions, nor report a deviation. If after one year of documented opacity readings that no deviations are reported, the Permittee may reduce the frequency to once each week of operation while grain is being received. If any corrective actions are to be reversed subsequent to the opacity readings (such as opening a door), a subsequent VE reading shall be conducted to verify that no visible emissions are present. The Permittee shall maintain records of all observa ons.


EQUI 118 3363


EQUI 118 3364


EQUI 118 3394



EQUI 129 3351

See subject item EQUI 133 of this permit for associated visible emissions monitoring requirements. [Minn. R. 7007.0800, subp. 2(A)]


EQUI 130 3351



EQUI 131 3351




EQUI 132 3351



EQUI 133 3351

Visible Emissions: At least once each day of operation, the Permittee shall conduct visible emissions (VE) readings at the DDGS Storage Building door using the Alternative Test Method for Visual Emissions Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit while DDGS is being conveyed to the DDGS Storage Building. If after one year of documented VE readings that no visible emissions are recorded, the Permittee may reduce the frequency to once each week of operation while DDGS is being conveyed to the DDGS Storage Building. If visible emissions are observed, the Permittee must take corrective actions to eliminate visible emissions as soon as possible and must report a deviation, unless opacity readings conducted by the Permi ee as described below are less than the opacity limit.

If the VE readings are conducted by a certified opacity reader, the Permittee has the option of immediately determining the opacity from the emissions source using the Alternative Test Method for Opacity Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit. If the opacity results are less than the permit requirement, the Permittee is not required to take further corrective actions, nor report a deviation. If after one year of documented opacity readings that no deviations are reported, the Permittee may reduce the frequency to once each week of operation while DDGS is being conveyed to the DDGS Storage Building. If any corrective actions are to be reversed subsequent to the opacity readings (such as opening a door), a subsequent VE reading shall be conducted to verify that no visible emissions are present. The Permi ee shall maintain records of all observa ons.


EQUI 133 3352


EQUI 133 3353


EQUI 133 3394




EQUI 134 3351

Visible Emissions: At least once each day of operation, the Permittee shall conduct visible emissions (VE) readings at the DDGS Storage Building door using the Alternative Test Method for Visual Emissions Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit while DDGS is being removed from the storage pile and delivered to the receiving pit. If after one year of documented VE readings that no visible emissions are recorded, the Permittee may reduce the frequency to once each week of operation while DDGS is being removed from the storage pile and delivered to the receiving pit. If visible emissions are observed, the Permittee must take corrective actions to eliminate visible emissions as soon as possible and must report a deviation, unless opacity readings conducted by the Permittee as described below are less than the opacity limit.

If the VE readings are conducted by a certified opacity reader, the Permittee has the option of immediately determining the opacity from the emissions source using the Alternative Test Method for Opacity Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit. If the opacity results are less than the permit requirement, the Permittee is not required to take further corrective actions, nor report a deviation. If after one year of documented opacity readings that no deviations are reported, the Permittee may reduce the frequency to once each week of operation while DDGS is being removed from the storage pile and delivered to the receiving pit. If any corrective actions are to be reversed subsequent to the opacity readings (such as opening a door), a subsequent VE reading shall be conducted to verify that no visible emissions are present. The Permi ee shall maintain records of all observa ons.


EQUI 134 3352


EQUI 134 3353


EQUI 134 3394



EQUI 135 3351


EQUI 138 3350 Opacity <= 5 percent opacity from railcar loading stations fugitive emissions. [Minn. R. 7011.1005, subp. 3(A)]

EQUI 138 3360 Opacity <= 10 percent opacity from truck loading stations fugitive emissions. [Minn. R. 7011.1005, subp. 3(B)]

EQUI 138 3390

The Permittee shall limit the operating hours of DDGS loadout to the hours of 7 AM to 5 PM, Monday through Friday. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]


EQUI 138 3391


EQUI 138 3392

Visible Emissions: At least once each day of operation, the Permittee shall conduct visible emissions (VE) readings at the downwind Grain Receiving/DDGS Loadout Building door using the Alternative Test Method for Visual Emissions Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit while DDGS is being loaded into a truck. If after one year of documented VE readings that no visible emissions are recorded, the Permittee may reduce the frequency to once each week of operation while DDGS is being loaded into a truck. If visible emissions are observed, the Permittee must take corrective actions to eliminate visible emissions as soon as possible and must report a deviation, unless opacity readings conducted by the Permittee as described below are less than the opacity limit.

If the VE readings are conducted by a certified opacity reader, the Permittee has the option of immediately determining the opacity from the emissions source using the Alternative Test Method for Opacity Determination for Intermittent Dust‐Generating Operations found in Appendix G of this permit. If the opacity results are less than the permit requirement, the Permittee is not required to take further corrective actions, nor report a deviation. If after one year of documented opacity readings that no deviations are reported, the Permittee may reduce the frequency to once each week of operation while DDGS is being loaded into a truck. If any corrective actions are to be reversed subsequent to the opacity readings (such as opening a door), a subsequent VE reading shall be conducted to verify that no visible emissions are present. The Permittee shall maintain records of all observations.


EQUI 138 3393


EQUI 138 3394



EQUI 151 3690


EQUI 151 7910

The Permi ee must comply with all applicable requirements of 40 CFR pt. 63, subp. CCCCCC, as follows:

40 CFR 63.11111(a)‐(b), (e), and (h)‐(i); 40 CFR 63.11112(a)‐(b); 40 CFR 63.11113(a) and (a)(2); 40 CFR 63.11115(a)‐(b); 40 CFR 63.11116(a)‐(c); 40 CFR 63.11130; 40 CFR 63.11131(a); 40 CFR 63.11132; and 40 CFR pt. 63, subp. CCCCCC, Table 3.

A copy of 40 CFR pt. 63, subp. CCCCCC is included in Appendix L. If the standard changes or upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [40 CFR pt. 63, subp. CCCCCC, Minn. R. 7007.0400, subp. 3, Minn. R. 7007.1150‐7007.1500, Minn. R. 7011.7185]


EQUI 151 7911


40 CFR 63.1; 40 CFR 63.2; 40 CFR 63.3; 40 CFR 63.4; 40 CFR 63.5; 40 CFR 63.6(a), (b)(1)‐(b)(5), (f)(2)‐(f)(3), and (g)(1)‐(g)(3); 40 CFR 63.6(i)(1)‐(i)(14) and (j); 40 CFR 63.7(a)(2)‐(a)(3), (b)(1)‐(b)(2), and (c)‐(d); 40 CFR 63.7(e)(2)‐(e)(3) and (f)‐(h); 40 CFR 63.8(a)(1)‐(a)(2), (a)(4) and (b)(1); 40 CFR 63.9(b)(1)‐(b)(2), (b)(4)‐(b)(5), (c)‐(e), (g), and (h)(1)‐(h)(6); 40 CFR 63.9(i)‐(j); 40 CFR 63.10(a), (b)(1), (b)(2)(iii), (b)(2)(xii)‐(xiv), and (b)(3); 40 CFR 63.10(d)(1)‐(d)(2), (d)(4), and (f); 40 CFR 63.12; 40 CFR 63.13; 40 CFR 63.14; and 40 CFR 63.15.

A copy of 40 CFR pt. 63, subp. A is included in Appendix M. If the standard changes or upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [40 CFR 63.11130, 40 CFR pt. 63, subp. A, 40 CFR pt. 63, subp. CCCCCC(Table 3), Minn. R. 7007.0400, subp. 3, Minn. R. 7007.1150‐1500, Minn. R. 7011.7000, Minn. R. 7011.7185, Minn. R. 7017.1010 & 7017.2025, Minn. R. 7019.0100]


EQUI 152 3690


EQUI 152 3691

Process Throughput <= 120000 gallons per year 12‐month rolling sum of gasoline for onsite vehicle use. This limit includes <= 119000 gallons of purchased gasoline per year plus the capacity of the gasoline tank (1,000 gallons). [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

EQUI 152 3692

Monthly Gasoline Purchasing Recordkeeping: By the 15th of the month, the Permittee shall calculate and record the following:1. The gallons of gasoline purchased for EQUI 152 during the previous month based on delivery receipts for that month; and2. The 12‐month rolling sum of gasoline purchases for EQUI 152 for the previous 12‐month period by summing the monthly gasoline purchase receipts for the previous 12 months. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

EQUI 166 3090


The authorization to start construction of this equipment expires 5 years after issuance of Air Emissions Permit No. 11100077. The unit shall meet all applicable permit requirements. [Minn. R. 7007.0800, subp. 2]

EQUI 166 3100



EQUI 166 3110



EQUI 167 3090



EQUI 167 3100




EQUI 167 3110



EQUI 168 3090



EQUI 168 3100



EQUI 168 3110



EQUI 169 3450

Opacity <= 20 percent opacity except for one six‐minute period per hour of not more than 60 percent opacity. [Minn. R. 7011.0610, subp. 1(A)(2)]

EQUI 169 3460

Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. [Minn. R. 7011.0610, subp. 1(A)(1)]

EQUI 169 3461 Fuel type: natural gas only, by design. [Minn. R. 7005.0100, subp. 35a]FUGI 7 3680 Opacity <= 20 percent opacity. [Minn. R. 7011.0715, subp. 1(B)]

FUGI 7 3690


FUGI 8 3680 Opacity <= 20 percent opacity. [Minn. R. 7011.0715, subp. 1(B)]

FUGI 8 3690


FUGI 9 3680 Opacity <= 20 percent opacity. [Minn. R. 7011.0715, subp. 1(B)]

FUGI 9 3690


FUGI 11 1

The Permittee shall comply with the Compliance Schedule for Temporary Storage Facility (TSF) operations contained in Appendix N to this permit. The Permittee shall cease all grain receiving operations at any temporary storage facility on or before December 1, 2020. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 11 3

Opacity <= 20 percent opacity. This limit applies individually to any emission point in the grain receiving operation. This includes each grain receiving pit, transfer point and conveyor transfer point. [Minn. R. 7011.0110]

FUGI 11 4

Grain Receiving Process Throughput <= 7280 tons per day. This limit applies to all grain received at the temporary storage facility. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 11 5

The Permittee shall limit the months of grain receiving and pile filling operations at the temporary storage facility to the months of July through November only. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]


FUGI 11 7

The Permittee shall limit the days of grain receiving and pile filling operations at the temporary storage facility to Monday through Friday during the months of July through August.

The Permittee shall limit the days of grain receiving and pile filling operations at the temporary storage facility to Monday through Saturday during the months of September through November. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 11 8

The Permittee shall limit the hours of grain receiving and pile filling operations at the temporary storage facility to the hours of 7 AM to 7 PM. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 11 9

The Permittee shall receive grain at the temporary storage facility from hopper bottom trucks only. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 11 15

The Permittee shall institute and comply with the following Temporary Storage Facility Best Management Practices (BMPs):

a. The Permittee shall take reasonable measures to minimize the drop distance to the pile from the incline conveyor during pile filling operations.b. Loose starch, debris, and corncob chaff ("beeswings") may not be swept or shoveled into the temporary storage facility receiving pits and conveyed into the pile. The Permittee shall collect this material in bins or similar containers, and remove it from the receiving pit area.c. The Permittee shall take reasonable measures to restrict or relocate receiving and conveying operations during high wind conditions (> 20 mph). d. The Permittee may not accept grain simultaneously in receiving pit 1 and receiving pit 2, unless the Permittee constructs a wind shroud around the receiving pits and the conveyor linking the receiving pits to minimize fugitive emissions. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 11 17

Daily Grain Receiving and Pile Filling Visible Emissions Readings at the Property Boundary: At least once each day of operation during grain receiving and pile filling operations, the Permittee shall conduct visible emission readings at the following locations, using the Alternative Test Method for Visible Emissions Determination from Intermi ent Dust‐Genera ng Opera ons found in Appendix G of this permit:

1) at the downwind property boundary of the temporary storage facility while grain is being received; and2) at the downwind property boundary of the temporary storage facility while grain is being conveyed to the pile.

If the observations cannot be conducted due to weather conditions, the date, time, and specific weather conditions must be recorded. [Minn. R. 7007.0800, subp. 2(A)]

FUGI 11 18

Daily Grain Receiving and Pile Filling Opacity Readings: At least once each day of operation during grain receiving and pile filling operations, the Permittee shall conduct opacity readings at the following locations, using the Alternative Test Method for Opacity Determination from Intermittent Dust‐Generating Operations found in Appendix G of this permit:

1) at each temporary storage facility grain receiving operations while grain is being received. If more than one grain receiving pit is in operating, a daily opacity reading must be conducted at each receiving pit; and2) at the temporary storage facility grain conveying operations while grain is being conveyed to the pile.If the observations cannot be conducted due to weather conditions, the date, time, and specific weather conditions must be recorded.

If the opacity results are less than or equal to 20% opacity, the Permittee is not required to take corrective actions, nor report a deviation. If the opacity results are greater than 20% opacity, the Permittee must take correction actions to reduce visible emissions as soon as possible, and report a deviation. [Minn. R. 7007.0800, subp. 2(A)]

FUGI 11 20

If weather conditions create a condition in which an opacity standard is exceeded, the Permittee shall take appropriate action, as needed. This response action could include ceasing receiving activity until weather conditions improve. [Minn. R. 7007.0800, subp. 2(A)]

FUGI 11 21

Corrective Actions: The Permittee shall take corrective action as soon as possible if the opacity standard is exceeded. Corrective actions shall return the affected facility operation to a condition where the opacity limit is not exceeded. [Minn. R. 7007.0800, subp. 2(A)]


FUGI 11 22

Grain Receiving Process Throughput: Daily Recordkeeping. Each day of operation, the Permittee shall calculate, record, and maintain records of the tons of grain received at the temporary storage facility. This shall be based on grain receipts. Each grain receipt for the temporary storage facility shall include a written verification that each truck used to receive grain is a hopper‐type truck only. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 11 24

Operating Hours: Daily Recordkeeping. Each day of operation, the Permittee shall record:1) the time and date of commencement of the first daily grain receiving operation at the temporary storage facility; and2) the time and date of conclusion of the final daily grain receiving operation at the temporary storage facility. These records shall be based on written logs and grain receipts. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 11 26

Visible Emissions: Daily Recordkeeping. Each day of operation, the Permittee shall maintain a record of the following:

1) the daily field records for each visible emission reading as described in Appendix G to this permit;2) the visible emissions readings for each monitored location;3) whether or not visible emissions were observed for each monitored location; and4) any corrective actions taken. [Minn. R. 7007.0800, subps. 4‐5]

FUGI 11 27

Opacity: Daily Recordkeeping. Each day of operation, the Permittee shall maintain a record of the following:1) the daily field records for each opacity reading as described in Appendix G to this permit;2) the opacity readings for each monitored location;3) the daily average opacity for each monitored location; and4) any corrective actions taken. [Minn. R. 7007.0800, subps. 4‐5]

FUGI 15 4600

Vapor recovery systems (for example, condensers and absorbers) shall be designed and operated to recover the VOC emissions vented to them with an efficiency for Volatile Organic Compounds >= 95.0 percent, or to an exit concentration of 20 parts per million by volume (ppmv), whichever is less stringent. [40 CFR 60.482‐10(b), Minn. R. 7011.2900(A)]

FUGI 15 6940

Enclosed combustion devices shall be designed and operated to reduce the VOC emissions vented to them with an efficiency for Volatile Organic Compounds >= 95.0 percent, or to an exit concentration of 20 ppmv, on a dry basis, corrected to 3 percent oxygen, whichever is less stringent or to provide a minimum residence time of 0.75 seconds at a minimum temperature of 816 deg C. [40 CFR 60.482‐10(c), Minn. R. 7011.2900(A)]

FUGI 15 6950

The Permittee must comply with all applicable requirements of 40 CFR pt. 60, subp. VV as follows:

40 CFR 60.480(a)‐(b);40 CFR 60.481;40 CFR 60.482‐1(a)‐(b);40 CFR 60.482‐1(e)‐(g);40 CFR 60.482‐2;40 CFR 60.482‐3;40 CFR 60.482‐4;40 CFR 60.482‐5;40 CFR 60.482‐6;40 CFR 60.482‐7;40 CFR 60.482‐8;40 CFR 60.482‐9;40 CFR 60.482‐10;40 CFR 60.483‐1;40 CFR 60.483‐2;40 CFR 60.484(a);40 CFR 60.484(b);40 CFR 60.484(c);40 CFR 60.485;40 CFR 60.486(a)(1);40 CFR 60.486(b)‐(k);40 CFR 60.487(a)‐(e); and40 CFR 60.489.

A copy of 40 CFR pt. 60, subp. VV is included in Appendix I. If the standard changes or upon adoption of a new or amended federal applicable requirement, and if there are more than 3 years remaining in the permit term, the Permittee shall file an application for an amendment within nine months of promulgation of the applicable requirement, pursuant to Minn. R. 7007.0400, subp. 3. [40 CFR pt. 60, subp. VV, Minn. R. 7011.2900(A)]

FUGI 15 6970


40 CFR 60.1(a) and (b); 40 CFR 60.2; 40 CFR 60.3; 40 CFR 60.4; 40 CFR 60.7(a)(1), (a)(3)‐(a)(4), and (b); 40 CFR 60.8(b), (d), and (e); 40 CFR 60.11(a); 40 CFR 60.12; 40 CFR 60.14(a)‐(c) and (e)‐(g); 40 CFR 60.15; 40 CFR 60.17; and 40 CFR 60.19.



FUGI 16 1 Opacity <= 5 percent opacity from handling operation fugitive emissions. [Minn. R. 7011.1005, subp. 3(A)]

FUGI 16 2 Opacity <= 10 percent opacity from truck loading stations fugitive emissions. [Minn. R. 7011.1005, subp. 3(B)]

FUGI 16 3350


FUGI 16 3390

When wetcake is produced, it may be stored onsite for no more than 72 hours unless the daily maximum outside temperature is less than 55 degrees F as determined by an on‐site thermometer. The facility will in all cases move the wetcake offsite as soon as possible. [Minn. R. 7007.0800, subp. 2(A)]

FUGI 16 3400

When wetcake is stored onsite, record the daily maximum temperature for each day of storage. If the maximum temperature exceeds 55 degrees F, the Permittee shall also record the amount of time wetcake is stored onsite. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subps. 4‐5]

FUGI 17 1

The Permittee shall not cause or permit the handling, use, transporting, or storage of any material in a manner which may allow avoidable amounts of particulate matter to become airborne. The Permittee shall not cause or permit a building or its appurtenances or a road, or a driveway, or an open area to be constructed, used, repaired, or demolished without applying all such reasonable measures as may be required to prevent particulate matter from becoming airborne. The Permittee shall take reasonable precautions to prevent the discharge of visible fugitive dust emissions beyond the lot line of the property on which the emissions originate. The commissioner may require such reasonable measures as may be necessary to prevent particulate matter from becoming airborne including, but not limited to, paving or frequent clearing of roads, driveways, and parking lots; application of dust‐free surfaces; application of water; and the planting and maintenance of vegetative ground cover. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 17 3220 All paved haul roads shall be maintained. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 17 3260

Anytime fugitive emissions are observed on facility roadways, the Permittee shall immediately eliminate fugitive emissions by sweeping those road segments and/or apply water or a chemical dust suppressant. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 17 3331

On each day of operation, the Permittee shall visually inspect all paved surfaces to minimize or eliminate fugitive emissions. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 17 3332

Monthly Sweeping: The Permittee shall sweep all paved surfaces at least once each month of operation or when silt has accumulated to visible levels on the road, whichever occurs first. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 17 3333

The Permi ee shall implement and enforce the following facility speed limits:

10 mph on truck entrance road;30 mph on employee entrance road; and5 mph on all other haul roads.

The Permittee must post the applicable speed limit in a highly visible location near the facility entrance. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 17 3334

The Permittee shall conduct and keep a written record of yearly inspections of all paved haul roads for wear and tear and subsequent repairs. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 17 3335

Recordkeeping of Paved Surfaces Inspections: The facility shall maintain records the paved surfaces inspections that include the date of the inspection, whether fugitive dust was observed, what corrective actions were taken, when the corrective actions were taken, and whether the corrective actions eliminated the fugitive dust. [Minn. R. 7007.0800, subp. 5]

FUGI 17 3336

Recordkeeping of Sweeping: The Permittee must record the time, date, and location that the facility paved surfaces were swept. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]


FUGI 18 3300


FUGI 18 3310

The Permittee shall implement and enforce a speed limit of 5 miles per hour on unpaved haul roads. The Permittee must post the speed limit in a highly visible location near the facility entrance. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 18 3320

Daily Inspection and Recordkeeping: On each day of operation, the Permittee shall visually inspect all unpaved surfaces to minimize or eliminate fugitive emissions. The facility shall maintain records of this inspection that include the date of the inspection, whether fugitive dust was observed, what corrective actions were taken, when the corrective actions were taken, and whether the corrective actions eliminated the fugitive dust. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7011.0150]

FUGI 18 3330

Anytime fugitive emissions are observed on facility unpaved roadways, the Permittee shall immediately eliminate fugitive emissions by applying water or a chemical dust suppressant. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 18 3334

The Permittee shall maintain the gravel (Class 5) surface of the unpaved haul road serving the bunker to minimize emissions generation. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 18 3335

Upon completion of the requirements of the Compliance Schedule for Temporary Storage Facility (TSF) Operations contained in Appendix N to this permit, the Permittee shall cease the use of the unpaved roads serving the TSF, and must block access to the roads for any use other than intermittent maintenance activities. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 19 10

The Permittee shall comply with the Compliance Schedule for Temporary Storage Facility (TSF) operations contained in Appendix N to this permit. The Permittee shall cease all grain reclaim operations at any temporary storage facility on or before July 1, 2021. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 19 11

Opacity <= 20 percent opacity. This limit applies individually to any emission point in the grain reclaim operation. This includes the removal of grain from the pile, and the transfer of the grain from the reclaim equipment to the truck. [Minn. R. 7011.0110]

FUGI 19 12

Grain Reclaim Process Throughput <= 3080 tons per day. This limit applies to all grain reclaimed from the temporary storage facility. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 19 14

The Permittee shall limit the months of grain reclaim operations at the temporary storage facility to the months of March through June only. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 19 19

The Permittee shall limit the days of grain reclaim operations at the temporary storage facility to Monday through Friday. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 19 20

The Permittee shall limit the hours of grain reclaim operations at the temporary storage facility to the hours of 7 AM to 7 PM. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 19 21

The Permittee shall institute and comply with the following Temporary Storage Facility Best Management Prac ces (BMPs):

a. The Permittee shall take reasonable measures to minimize the drop distance to reclaim trucks during pile reclaim opera ons.

b. The Permittee shall take reasonable measures to restrict or relocate reclaim operations during high wind conditions (> 20 mph). [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]


FUGI 19 23

Daily Grain Reclaim Opacity Readings: At least once each day of operation during grain reclaim operations, the Permittee shall conduct opacity readings at the following locations, using the Alternative Test Method for Opacity Determina on from Intermi ent Dust‐Genera ng Opera ons found in Appendix G of this permit:

1) at the loca on of the temporary storage facility where grain is scooped from the pile for reclaim; and2) at the loca on of the temporary storage facility where grain is loaded into trucks for reclaim.

If the observations cannot be conducted due to weather conditions, the date, time, and specific weather condi ons must be recorded.

If the opacity results are less than or equal to 20% opacity, the Permittee is not required to take corrective actions, nor report a deviation. If the opacity results are greater than 20% opacity, the Permittee must take correction actions to reduce visible emissions as soon as possible, and report a deviation. [Minn. R. 7007.0800, subp. 2(A)]

FUGI 19 25

If weather conditions create a condition in which an opacity standard is exceeded, the Permittee shall take appropriate action, as needed. This response action could include ceasing receiving activity until weather conditions improve. [Minn. R. 7007.0800, subp. 2(A)]

FUGI 19 26

Corrective Actions: The Permittee shall take corrective action as soon as possible if the opacity standard is exceeded. Corrective actions shall return the affected facility operation to a condition where the opacity limit is not exceeded. [Minn. R. 7007.0800, subp. 2(A)]

FUGI 19 27

Grain Reclaim Process Throughput: Daily Recordkeeping. Each day of operation, the Permittee shall calculate, record, and maintain records of the tons of grain reclaimed from the temporary storage facility. This shall be based on grain receipts. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 19 28

Operating Hours: Daily Recordkeeping. Each day of operation, the Permittee shall record:1) the time and date of commencement of the first daily grain reclaim operation at the temporary storage facility; and2) the time and date of conclusion of the final daily grain reclaim operation at the temporary storage facility. These records shall be based on written logs. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

FUGI 19 30

Opacity: Daily Recordkeeping. Each day of operation, the Permittee shall maintain a record of the following:1) the daily field records for each opacity reading as described in Appendix G to this permit;2) the opacity readings for each monitored location;3) the daily average opacity for each monitored location; and4) any corrective actions taken. [Minn. R. 7007.0800, subps. 4‐5]

FUGI 20 2


FUGI 20 16

The Temporary Storage Facility (TSF) in which the grain is stored must:

1. be designed and operated with an asphalt, concrete, or comparable base material in the bunker;2. have rigid, self‐supporting sidewalls;3. be adequately aerated during periods of grain storage; and4. be covered during periods that are not authorized for grain receiving or grain reclaim operations. [Minn. R. 7007.0800, subp. 2(A), Minn. Stat. 116.07, subd. 2c]


FUGI 20 20

The Permittee shall institute and comply with the following Temporary Storage Facility Best Management Prac ces (BMPs):

a. During ac ve pile forma on, the Permi ee must minimize surface area exposed to the wind.b. During pile formation, if the Permittee is using the circular pile area, it shall be filled to capacity and covered before grain is accepted in the adjacent temporary storage facility.c. During pile formation in the oval bunker, the pile shall be covered as the pile reaches 25%, 50%, 75%, and 100% of capacity.d. During reclaim operations, the Permittee shall uncover and reclaim only one temporary storage area at a time. When the first storage area is emptied to below the level of the sidewalls, the cover may be removed from the remaining storage area. The piles must remain 100% covered during inactive periods. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7011.0150]

FUGI 20 21

Daily Wind Erosion Visible Emissions Readings at the Property Boundary: At least once each day during periods when the temporary storage pile is active, the Permittee shall conduct visible emission readings, using the Alternative Test Method for Visible Emissions Determination from Intermittent Dust‐Generating Operations found in Appendix G of this permit at the downwind property boundary of the temporary storage facility. The pile is considered active when it is not 100% covered. If the observations cannot be conducted due to weather conditions, the date, time, and specific weather conditions must be recorded. [Minn. R. 7007.0800, subp. 2(A)]

FUGI 20 26

If weather conditions create a condition in which visible emissions are observed, the Permittee shall take appropriate action, as needed. This response action could include covering the pile until weather conditions improve. [Minn. R. 7007.0800, subp. 2(A)]

FUGI 20 27

Corrective Actions: The Permittee shall take corrective action as soon as possible if visible emissions are observed. Corrective actions shall return the affected facility operation to a condition where no visible emissions are observed. [Minn. R. 7007.0800, subp. 2(A)]

FUGI 20 28

Visible Emissions: Daily Recordkeeping. Each day of operation, the Permittee shall maintain a record of the following:

1) the daily field records for each visible emission reading as described in Appendix G to this permit;2) the visible emissions readings for each monitored location;3) whether or not visible emissions were observed for each monitored location; and4) any corrective actions taken. [Minn. R. 7007.0800, subps. 4‐5]

STRU 7 3

See subject item TREA 7 (Grain Receiving Baghouse) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

STRU 7 4

The Permittee must vent emissions from all emission units venting to STRU 7 to a fabric filter that meets the requirements of TREA 7 whenever any emission unit venting to STRU 7 operates, and must operate and maintain a fabric filter that meets the requirements of TREA 7 at all times that any emissions vent to it. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

STRU 7 8

Particulate Matter <= 3.170 pounds per hour 3‐hour average. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

STRU 7 10

PM < 10 micron <= 3.170 pounds per hour 3‐hour average. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

STRU 7 3350

PM < 2.5 micron <= 3.170 pounds per hour 3‐hour average. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

STRU 7 3430

Opacity <= 10 percent opacity discharged from control equipment. This limit applies individually to each dry bulk agricultural commodity‐handling unit that vents through STRU 7. This limit applies individually to EQUIs 6, 11, 14, 20, 21, 22, 23, 24, 25, and 26, in addition to any dry bulk agricultural commodity‐handling units that are added using the flexibility provisions of this permit. [Minn. R. 7011.1005, subp. 3(D)]


STRU 7 20240

The Permittee shall limit the days of operation of all emission units venting to STRU 7 to Monday through Friday during the months of December through August.

The Permittee shall limit the days of operation of all emission units venting to STRU 7 to Monday through Saturday during the months of September through November.

These limits apply individually to EQUIs 6, 11, 14, 20, 21, 22, 23, 24, 25, and 26, in addition to any units that are added using the flexibility provisions of this permit. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

STRU 7 20250

The Permittee shall limit the operating hours of all emission units venting to STRU 7 to the hours of 7 AM to 7 PM each day. This limit applies individually to EQUIs 6, 11, 14, 20, 21, 22, 23, 24, 25, and 26, in addition to any units that are added using the flexibility provisions of this permit. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

STRU 7 20251

Short‐term Process Throughput <= 512.0 tons per hour 3‐hour block average of grain received as determined during the 09/26/2017 performance test, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3(B) as detailed in the Protocol for Resetting Short‐Term Process Throughput Limits below. The grain‐receiving rate will be based on grain receipts (tph).

The daily grain receiving process throughput may not exceed the COMG 6 limit of 7,250 tons of grain received per day.

The Permittee must maintain at the facility adequate grain receiving receipts to demonstrate continuous compliance with these operating condition limitations for the applicable averaging period. The Permittee is responsible for assuring compliance with the short‐term throughput limits on a 3‐hour block average through daily calculations or by maintaining maximum throughputs below the short‐term throughput limits. Missed Readings and recorded values outside the indicator ranges specified in this permit are considered deviations as defined by Minn. R. 7007.0100, subp. 8a and must be reported on Form DRF‐2. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.2025, subp. 3, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]


STRU 7 20253

Procedure to Increase Short‐Term Process Throughput Limit:

The Permittee may increase the process throughput limit by conducting a performance test at an operating rate that exceeds the permitted Short‐Term Process Throughput Limit and meeting requirements 1 through 4 below.

1. Performance Test Notification (written): due 30 to 90 days before performance test at an increased process throughput rate. In the notification, the Permittee shall identify the date on which they wish to be authorized to exceed the short‐term throughput limit, if prior to the test date.

2. The Permittee may exceed the existing short‐term process throughput limit upon MPCA receipt of the notification of a performance test at a higher process throughput.

3. The short‐term process throughput limit will be reset through receipt of a Notice of Compliance/Notice of Test Verification letter using the considerations described in the short‐term throughput limit above.

4. The Permittee must calculate actual emissions (i.e. for deviations, emission inventory or any other purpose) using the emission rate from the increased process throughput performance test retroactive to the date identified in the Performance Test Notification.

The Permittee shall follow TFAC requirements for other required performance testing notifications and submittals. [Minn. R. 7007.0800, subp. 2, Minn. R. 7017.2017, Minn. R. 7017.2030, subps. 1‐4, Minn. R. 7017.2035, subps. 1‐2]

STRU 7 20254

The Permittee must apply for and obtain a major permit amendment if the Permittee wishes to deviate from the Protocol for Resetting the Short‐Term Process Throughput Limit required by this permit. [Minn. R. 7007.1500, subp. 1]

Protocol for Rese ng Short‐Term Process Throughput Limits:

The Permittee shall conduct performance testing to measure PM/PM10/PM2.5 emission rates as required elsewhere in this permit. If an established Short‐Term Process Throughput Limit is to be reset, the reset shall be based on the Short‐Term Process Throughput Limit values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated.

During each performance test, the Permittee must monitor the grain‐receiving rate and any other process and control parameters detailed in Appendix D. A printout of the records relied upon during testing, and used to calculate the short‐term throughput limit must be included with the performance test results and submitted to the Commissioner with the performance test report. This may include grain‐receiving receipts for the 3‐hour period of the performance test. The Permittee shall calculate the average grain‐receiving rate for each individual compliant test run. Down me of 15 minutes or more is not to be included as opera ng me.

The Short‐Term Process Throughput Limit shall be reset as follows:

‐ If the test results are less than or equal to 80% of tested STRU 7 emission limits, the short‐term process throughput limit may be reset to 110% of the average throughput rate measured during the test runs;

‐ If the test results are greater than 80% of any STRU 7 emission limit, the short‐term process throughput limit will be reset to the average throughput rate measured during tes ng.

The new Short‐Term Process Throughput Limit shall be effective upon receipt of the Notice of Compliance/Notice of Test Verification letter that approves the test results and shall be incorporated into the permit when the permit is next amended. The Short‐Term Process Throughput Limit must remain in the permit to define the maximum allowable capacity of the process, as well as to reflect process throughput rates established during performance testing. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.2017, Minn. R. 7017.2030, subps. 1‐4, Minn. R. 7017.2045, subps. 1‐2, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]STRU 7 20252


STRU 7 20255

Notwithstanding the Protocol detailed above, the MPCA reserves the right to set operational limits and requirements as allowed under Minn. R. 7017.2025. If the MPCA sets limits, the new limits shall be implemented upon receipt of the Notice of Compliance letter that notifies the Permittee of preliminary approval. The limits set according to Minn. R. 7017.2025 are final upon issuance of a permit amendment incorporating the change. [Minn. R. 7017.2025]

STRU 7 20257

Prior to making such a change, the Permittee must apply for and obtain the appropriate permit amendment, as applicable. It is possible that the change may trigger a Title I modification, or another type of modification under state rules. The Permittee must complete the calculations and analysis as described in Minn. R. 7007.1200, subp. 2 and subp. 3 for any change.

A permit amendment is needed regardless of the emissions increase if the change will be subject to a new applicable requirement or requires revisions to the limits or monitoring and recordkeeping in this permit. [Minn. R. 7007.0800, subp. 2]

Equipment Flexibility Language: If the Permittee adds, modifies or replaces any equipment that vents emissions to STRU 7, such equipment, with exceptions noted below, is subject to all of the requirements of STRU 7, as well as those listed at the total facility (TFAC 2), at COMG 6, and within the Permit Appendices.

Additionally:

1. All of the existing, new, modified and replaced equipment that vents to STRU 7, and as identified in the Equipment Inventory including changes identified in the most current Annual Report, must be controlled by a fabric filter that meets the requirements of TREA 7 at all times that any of the equipment is being operated; 2. A "Short‐term Process Throughput" limit must exist at STRU 7, for any material that is received, handled, processed, or stored by any equipment that is modified or replaced, or whose emissions are rerouted, using the flexibility language at STRU 7.

3. Any increase in short‐term process throughput rates beyond that authorized in the "Process Throughput" requirement at STRU 7, must be reestablished using the "Procedure to Increase Process Throughput Limit" requirement at STRU 7 up to the maximum value allowable in the requirement;

4. Emissions of PM, PM10 and PM2.5 must remain below the lb/hr limits specified at STRU 7;5. The Permittee may not replace, add or modify any emission unit that is not designed to achieve 100% capture of emissions to associated controls (e.g., grain‐receiving pit or DDGS loadout operations) using the flexibility provisions of this permit;

6. The total permanent grain storage capacity of the facility must not exceed 2.5 million bushels; and

7. The Permittee must document the changes to any EQUI, STRU, or TREA in the Equipment Inventory seven working days prior to the commencement/start of any change. The documentation must be submitted with the Annual Report. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]20256STRU 7


STRU 7 20258

Particulate Matter: The Permittee shall conduct a performance test due before 10/2/2022 and every 60 months thereafter to measure emissions (lb/hr).

The first test is due by the date specified and all subsequent tests shall be completed every 60 months thereafter by the set due date (month and day) and as described below. The performance test shall be conducted at worst‐case conditions as defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 5 and 202, or other method approved by MPCA in the performance test plan approval. A table of performance test operating parameters and test methods is contained in Appendix D. This permit contains short‐term process throughput limits. Short‐term process throughput limits will be defined by the operating rates sustained during the test, and may be reset with a Notice of Compliance or Notice of Test Verification letter.

Testing conducted during the 60 days prior to the performance test due date will not reset the test due date for future testing as required by this permit or within a Notice of Compliance letter.

Testing conducted more than 60 days prior to the performance test due date satisfies this test due date requirement but will reset future performance test due dates based on the performance test date. [Minn. R. 7017.2020, subp. 1, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

STRU 7 20259

PM < 10 micron: The Permittee shall conduct a performance test due before 10/2/2022 and every 60 months thereafter to measure emissions (lb/hr).

The first test is due by the date specified and all subsequent tests shall be completed every 60 months thereafter by the set due date (month and day) and as described below. The performance test shall be conducted at worst‐case conditions as defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 201A and 202, or other method approved by MPCA in the performance test plan approval. A table of performance test operating parameters and test methods is contained in Appendix D. This permit contains short‐term process throughput limits. Short‐term process throughput limits will be defined by the operating rates sustained during the test, and may be reset with a Notice of Compliance or Notice of Test Verification letter.


Testing conducted more than 60 days prior to the performance test due date satisfies this test due date requirement but will reset future performance test due dates based on the performance test date. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.2020, subp. 1, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]


STRU 7 20260

PM < 2.5 micron: The Permittee shall conduct a performance test due before 10/2/2022 and every 60 months thereafter to measure emissions (lb/hr).




STRU 7 20261

Performance Testing Recordkeeping: During each performance test the Permittee must record and maintain, at a minimum, the process and control parameters as detailed in Appendix D. These records must be included with the performance test results and submitted to the Commissioner with the performance test report. [Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.2020, subp. 1, Minn. R. 7017.2025, subp. 3]

STRU 22 2

See subject item TREA 8 (Hammermill Baghouse) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

STRU 22 3


STRU 22 9


STRU 22 10


STRU 22 3420


STRU 22 3430

Opacity <= 10 percent opacity discharged from control equipment. This limit applies individually to each dry bulk agricultural commodity‐handling unit that vents through STRU 22. This limit applies individually to EQUIs 1, 27, 114, 115, 166, 167, and 168, in addition to any dry bulk agricultural commodity handling units that are added using the flexibility provisions of this permit. [Minn. R. 7011.1005, subp. 3(D)]

STRU 22 3680

Opacity <= 20 percent opacity. This limit applies individually to each unit that is not a dry bulk agricultural commodity‐handling unit that vents through STRU 22. This limit applies individually to EQUIs 29, 30, 57, 119, 120, 121, 122, 123, 124, 125, and 126, in addition to any units that are not bulk agricultural commodity‐handling units that are added using the flexibility provisions of this permit. [Minn. R. 7011.0715, subp. 1(B)]

STRU 22 3690

Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. This limit applies individually to each unit that is not a dry bulk agricultural commodity‐handling unit that vents through STRU 22. This limit applies individually to EQUIs 29, 30, 57, 119, 120, 121, 122, 123, 124, 125, and 126, in addition to any units that are not bulk agricultural commodity‐handling units that are added using the flexibility provisions of this permit. [Minn. R. 7011.0715, subp. 1(A)]


STRU 22 20230

STRU 22 Alternative Operating Scenario 1 (AOS 1 – No Equipment Flexibility): When operating in AOS 1, the Permittee must comply with the AOS 1 Short‐term Process Throughput limit using measurements of mash flow rate and slurry percent solids. The “Equipment Flexibility Language” requirements below do not apply when the Permittee is operating in AOS 1. [Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subp. 2(A)]

AOS 1: Short‐term Process Throughput <= 63.0 tons per hour 3‐hour block average flour rate, as determined during the 10/31/2017 performance test, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3(B) as detailed in the Protocol for Resetting Short‐Term Process Throughput Limits below. The flour rate will be calculated using the mash rate measured from the liquefaction tank to the fermenters based on a flowmeter (gpm) and the slurry percent solids measured from the slurry tank to the liquefaction tank based on a density meter (weight % solids), according to the following equation:

Flour Rate = Mash Flow x 9.5 x Slurry Solids x 60 / 2000

where:

Flour Rate = calculated flour process rate, in ton/hr;Mash Flow = measured mash flow rate, in gal/min;9.5 = average mash density, in lb/gal;Slurry Solids = measured slurry weight % solids;60 = conversion factor from min. to hr.; and2000 = conversion factor from lb to ton.

The Permittee must maintain at the facility adequate flow monitor and density meter records to demonstrate continuous compliance with these operating condition limitations for the applicable averaging period. The facility must use a continuous hard‐copy recorder or a data acquisition system to take and record readings to comply with the process throughput limits as a 3‐hour block average. Any data acquisition system must be equipped with a computer historian, and be capable of providing the necessary records for calculating the required 3‐hour block averages. The Permittee is responsible for assuring compliance with the short‐term throughput limits on a 3‐hour block average through daily calculations or by maintaining maximum throughputs below the short‐term throughput limits. Missed Readings and recorded values outside the indicator ranges specified in this permit are considered deviations as defined by Minn. R. 7007.0100, subp. 8a and must be reported on the applicable DRF Form. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.2025, subp. 3, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]20235STRU 22


STRU 22 20245

STRU 22 Alternative Operating Scenario 2 (AOS 2 – Equipment Flexibility): AOS 2 is an operating scenario in which the Permittee installs, operates, and maintains a density meter for measuring the mash density (lb/gal) between the liquefaction tank and the fermenters. When operating in AOS 2, the Permittee must comply with the AOS 2 Short‐term Process Throughput limit using measurements of mash flow rate, mash density, and slurry percent solids. The “Equipment Flexibility Language” requirements below apply only when the Permittee is operating in AOS 2. [Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subp. 2]

AOS 1: Protocol for Rese ng Short‐Term Process Throughput Limits:


During each performance test, the Permittee must monitor the mash flow rate, slurry weight % solids, and any other process and control parameters detailed in Appendix D. A printout of the records relied upon during testing, and used to calculate the short‐term throughput limit must be included with the performance test results and submitted to the Commissioner with the performance test report. This may include mash flow rate and slurry weight % solids data for the 3‐hour period of the performance test. The Permittee shall calculate the average flour process rate for each individual compliant test run. Downtime of 15 minutes or more is not to be included as opera ng me.




The new Short‐Term Process Throughput Limit shall be effective upon receipt of the Notice of Compliance/Notice of Test Verification letter that approves the test results and shall be incorporated into the permit when the permit is next amended. The Short‐Term Process Throughput Limit must remain in the permit to define the maximum allowable capacity of the process, as well as to reflect process throughput rates established during performance testing. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.2017, Minn. R. 7017.2030, subps. 1‐4, Minn. R. 7017.2045, subps. 1‐2, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]20240STRU 22


AOS 2: Short‐term Process Throughput <= 63.0 tons per hour 3‐hour block average flour rate, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3(B) as detailed in the Protocol for Resetting Short‐Term Process Throughput Limits below. The flour rate will be calculated using the mash rate measured from the liquefaction tank to the fermenters based on a flowmeter (gpm), the mash density measured from the liquefaction tank to the fermenters based on a density meter (lb/gal), and the slurry percent solids measured from the slurry tank to the liquefac on tank based on a density meter (weight % solids), according to the following equa on:

Flour Rate = Mash Flow x Mash Density x Slurry Solids x 60 / 2000

where:

Flour Rate = calculated flour process rate, in ton/hr;Mash Flow = measured mash flow rate, in gal/min;

Density = measured mash density, in lb/gal;Slurry Solids = measured slurry weight % solids;60 = conversion factor from min. to hr.; and2000 = conversion factor from lb to ton.

The Permittee must maintain at the facility adequate flow monitor and density meter records to demonstrate continuous compliance with these operating condition limitations for the applicable averaging period. The facility must use a continuous hard‐copy recorder or a data acquisition system to take and record readings to comply with the process throughput limits as a 3‐hour block average. Any data acquisition system must be equipped with a computer historian, and be capable of providing the necessary records for calculating the required 3‐hour block averages. The Permittee is responsible for assuring compliance with the short‐term throughput limits on a 3‐hour block average through daily calculations or by maintaining maximum throughputs below the short‐term throughput limits. Missed Readings and recorded values outside the indicator ranges specified in this permit are considered deviations as defined by Minn. R. 7007.0100, subp. 8a and must be reported on the applicable DRF Form. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.2025, subp. 3, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]20250STRU 22


STRU 22 20257








AOS 2: Protocol for Rese ng Short‐Term Process Throughput Limits:


During each performance test, the Permittee must monitor the mash flow rate, mash density, slurry weight % solids, and any other process and control parameters detailed in Appendix D. A printout of the records relied upon during testing, and used to calculate the short‐term throughput limit must be included with the performance test results and submitted to the Commissioner with the performance test report. This may include mash flow rate, mash density, and slurry weight % solids data for the 3‐hour period of the performance test. The Permittee shall calculate the average flour process rate for each individual compliant test run. Down me of 15 minutes or more is not to be included as opera ng me.




The new Short‐Term Process Throughput Limit shall be effective upon receipt of the Notice of Compliance/Notice of Test Verification letter that approves the test results and shall be incorporated into the permit when the permit is next amended. The Short‐Term Process Throughput Limit must remain in the permit to define the maximum allowable capacity of the process, as well as to reflect process throughput rates established during performance testing. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.2017, Minn. R. 7017.2030, subps. 1‐4, Minn. R. 7017.2045, subps. 1‐2, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]20256STRU 22


STRU 22 20258


STRU 22 20259


STRU 22 20260

Particulate Matter: The Permittee shall conduct a performance test due before 10/2/2022 and every 60 months thereafter to measure emissions (lb/hr and gr/dscf).




STRU 22 20261






STRU 22 20262





AOS 2: Equipment Flexibility Language: If the Permittee adds, modifies or replaces any equipment that vents emissions to STRU 22, such equipment, with exceptions noted below, is subject to all of the requirements of STRU 22, as well as those listed at the total facility (TFAC 2) and within the Permit Appendices.

Addi onally:

1. All of the existing, new, modified and replaced equipment that vents to STRU 22, and as identified in the Equipment Inventory including changes identified in the most current Annual Report, must be controlled by a fabric filter that meets the requirements of TREA 8 at all mes that any of the equipment is being operated;

2. A "Short‐term Process Throughput" limit must exist at STRU 22, for any material that is received, handled, processed, or stored by any equipment that is modified or replaced, or whose emissions are rerouted, using the flexibility language at STRU 22.


4. Emissions of PM, PM10 and PM2.5 must remain below the lb/hr limits specified at STRU 22;

5. The Permittee may not replace, add or modify any emission unit that is not designed to achieve 100% capture of emissions to associated controls (e.g., grain‐receiving pit or DDGS loadout operations) using the flexibility provisions of this permit;


7. The Permittee must document the changes to any EQUI, STRU, or TREA in the Equipment Inventory seven working days prior to the commencement/start of any change. The documentation must be submitted with the Annual Report. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]20263STRU 22


STRU 22 20264



STRU 22 20265


STRU 22 20266

Recordkeeping of Alternative Operating Scenarios: Each day of operation, the Permittee must record the applicable operating scenario the Permittee is operating under (AOS 1 or AOS 2). The record shall be updated whenever making a change from one operating scenario to the other. The record shall at a minimum include the day and time the switch was made and the designation of the operating scenario. This shall be based on hand‐written or electronic logs. [Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 1‐2]

STRU 23 1

See subject item TREA 11 (DDGS Loadout Baghouse) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

STRU 23 2


STRU 23 3


STRU 23 4


STRU 23 3420


STRU 23 3690

Opacity <= 10 percent opacity discharged from control equipment. This limit applies individually to each dry bulk agricultural commodity‐handling unit that vents through STRU 23. This limit applies individually to EQUIs 31, 32, 33, 34, 136, and 137, in addition to any dry bulk agricultural commodity‐handling units that are added using the flexibility provisions of this permit. [Minn. R. 7011.1005, subp. 3(D)]

STRU 23 3700

The Permittee shall limit the days of operation of all emission units venting to STRU 23 to the days of Monday through Friday. This limit applies individually to EQUIs 31, 32, 33, 34, 136, and 137, in addition to any units that are added using the flexibility provisions of this permit. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

STRU 23 3720

The Permittee shall limit the operating hours of all emission units venting to STRU 23 to the hours of 7 AM to 5 PM. This limit applies individually to EQUIs 31, 32, 33, 34, 136, and 137, in addition to any units that are added using the flexibility provisions of this permit. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]


STRU 23 3730

Short‐term Process Throughput <= 180.0 tons per hour 3‐hour block average of DDGS loadout (truck and rail), unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3(B) as detailed in the Protocol for Resetting Short‐Term Process Throughput Limits below. The DDGS loadout rate will be based on loadout receipts (tph).

The maximum throughput rate for DDGS loadout is 180 tons/hr based on loadout receipts. The maximum rate addresses modeling considera ons for associated uncaptured emissions.

The Permittee must maintain at the facility adequate DDGS loadout receipts to demonstrate continuous compliance with these operating condition limitations for the applicable averaging period. The Permittee is responsible for assuring compliance with the short‐term throughput limits on a 3‐hour block average through daily calculations or by maintaining maximum throughputs below the short‐term throughput limits. Missed Readings and recorded values outside the indicator ranges specified in this permit are considered deviations as defined by Minn. R. 7007.0100, subp. 8a and must be reported on Form DRF‐2. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.2025, subp. 3, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]



During each performance test, the Permittee must monitor the DDGS loadout rate and any other process and control parameters detailed in Appendix D. A printout of the records relied upon during testing, and used to calculate the short‐term throughput limit must be included with the performance test results and submitted to the Commissioner with the performance test report. This may include DDGS loadout receipts for the 3‐hour period of the performance test. The Permittee shall calculate the average DDGS loadout rate for each individual compliant test run. Down me of 15 minutes or more is not to be included as opera ng me.




The new Short‐Term Process Throughput Limit shall be effective upon receipt of the Notice of Compliance/Notice of Test Verification letter that approves the test results and shall be incorporated into the permit when the permit is next amended. The Short‐Term Process Throughput Limit must remain in the permit to define the maximum allowable capacity of the process, as well as to reflect process throughput rates established during performance testing. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.2017, Minn. R. 7017.2030, subps. 1‐4, Minn. R. 7017.2045, subps. 1‐2, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]20230STRU 23


STRU 23 20240








STRU 23 20245


STRU 23 20250



STRU 23 20256



STRU 23 20257

Particulate Matter: The Permittee shall conduct a performance test due before 10/2/2022 and every 60 months thereafter to measure emissions (lb/hr).




Equipment Flexibility Language: If the Permittee adds, modifies or replaces any equipment that vents emissions to STRU 23, such equipment, with exceptions noted below, is subject to all of the requirements of STRU 23, as well as those listed at the total facility (TFAC 2) and within the Permit Appendices.

Additionally:

1. All of the existing, new, modified and replaced equipment that vents to STRU 23, and as identified in the Equipment Inventory including changes identified in the most current Annual Report, must be controlled by a fabric filter that meets the requirements of TREA 11 at all times that any of the equipment is being operated;

2. A "Short‐term Process Throughput" limit must exist at STRU 23, for any material that is received, handled, processed, or stored by any equipment that is modified or replaced, or whose emissions are rerouted, using the flexibility language at STRU 23.


4. Emissions of PM, PM10 and PM2.5 must remain below the lb/hr limits specified at STRU 23;5. The Permittee may not replace, add or modify any emission unit that is not designed to achieve 100% capture of emissions to associated controls (e.g., grain‐receiving pit or DDGS loadout operations) using the flexibility provisions of this permit;


7. The Permittee must document the changes to any EQUI, STRU, or TREA in the Equipment Inventory seven working days prior to the commencement/start of any change. The documentation must be submitted with the Annual Report. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]20251STRU 23


STRU 23 20258





STRU 23 20259





STRU 23 20260


STRU 23 20261

Opera ng Hours: Daily Recordkeeping. On each day of opera on, the Permi ee shall record:1) the me and date of commencement of the first daily DDGS loadout opera on; and2) the time and date of conclusion of the final daily DDGS loadout operation. These records shall be based on written logs and loadout receipts. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9]

STRU 24 3680

See subject item TREA 22 (CO2 (Fermentation) Scrubber) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

STRU 24 3690

The Permittee must vent emissions from all emission units that vent to STRU 24 to a scrubber that meets the requirements of TREA 22 whenever any emission unit that vents to STRU 24 operates, and must operate and maintain a scrubber that meets the requirements of TREA 22 at all times that any emissions vent to it. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]


STRU 24 3700

Volatile Organic Compounds <= 11.280 pounds per hour as total mass of VOC, using 3‐hour average. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

STRU 24 20290

Opacity <= 20 percent opacity. This limit applies individually to each unit that vents through STRU 24. This limit applies individually to EQUIs 38, 39, 40, 41, 42, and 43, in addition to any units that are added using the flexibility provisions of this permit. [Minn. R. 7011.0715, subp. 1(B)]

STRU 24 20291

Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. This limit applies individually to each unit that vents through STRU 24. This limit applies individually to EQUIs 38, 39, 40, 41, 42, and 43, in addition to any units that are added using the flexibility provisions of this permit. [Minn. R. 7011.0715, subp. 1(A)]

STRU 24 20292

Short‐term Process Throughput <= 742.0 gallons per minute 3‐hour block average beer feed rate as determined during the 3/1/2017 performance test, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3(B) as detailed in the Protocol for Resetting Short‐Term Process Throughput Limits below. The beer feed rate will be measured from the beerwell to the beer stripper based on a flowmeter (gpm). The Permittee must maintain at the facility adequate flow monitor records to demonstrate continuous compliance with these operating condition limitations for the applicable averaging period. The facility must use a continuous hard‐copy recorder or a data acquisition system to take and record readings to comply with the process throughput limits as a 3‐hour block average. Any data acquisition system must be equipped with a computer historian, and be capable of providing the necessary records for calculating the required 3‐hour block averages. The Permittee is responsible for assuring compliance with the short‐term throughput limits on a 3‐hour block average through daily calculations or by maintaining maximum throughputs below the short‐term throughput limits. Missed Readings and recorded values outside the indicator ranges specified in this permit are considered deviations as defined by Minn. R. 7007.0100, subp. 8a and must be reported on the applicable DRF Form. [Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

Protocol for Resetting Short‐Term Process Throughput Limits:

The Permittee shall conduct performance testing to measure VOC emission rate and VOC control efficiency as required elsewhere in this permit. If an established Short‐Term Process Throughput Limit is to be reset, the reset shall be based on the Short‐Term Process Throughput Limit values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated.

During each performance test, the Permittee must monitor the beer feed rate and any other process and control parameters detailed in Appendix D. A printout of the records relied upon during testing, and used to calculate the short‐term throughput limit must be included with the performance test results and submitted to the Commissioner with the performance test report. The Permittee shall calculate the average beer feed rate for each individual compliant test run. Downtime of 15 minutes or more is not to be included as operating time.



‐ If the test results are greater than 80% of any STRU 24 emission limit, the short‐term process throughput limit will be reset to the average throughput rate measured during testing.

The new Short‐Term Process Throughput Limit shall be effective upon receipt of the Notice of Compliance/Notice of Test Verification letter that approves the test results and shall be incorporated into the permit when the permit is next amended. The Short‐Term Process Throughput Limit must remain in the permit to define the maximum allowable capacity of the process, as well as to reflect process throughput rates established during performance testing. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7017.2017, Minn. R. 7017.2030, subps. 1‐4, Minn. R. 7017.2045, subps. 1‐2, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]20293STRU 24


STRU 24 20294








STRU 24 20295


STRU 24 20296


STRU 24 20297

Equipment Flexibility Language: If the Permittee adds, modifies or replaces any equipment that vents emissions to STRU 24, such equipment is subject to all of the requirements of STRU 24, as well as those listed at the total facility (TFAC 2) and within the Permit Appendices.

Additionally:

1. All of the existing, new, modified and replaced equipment that vents to STRU 24, as identified in the Equipment Inventory including changes identified in the most current Annual Report, must be controlled by a scrubber that meets the requirements of TREA 22 at all times that any of the equipment vents to STRU 24. This includes requirements for minimum control efficiency identified at TREA 22;2. Any increase in short‐term process throughput rates beyond that authorized in the "Short‐term Process Throughput" limits at STRU 24, must be reestablished using the "Procedure to Increase Process Throughput Limit" requirement at STRU 24;

3. Emissions of VOC as mass must remain below the lb/hr limits specified at STRU 24; and

4. The Permittee must document the changes to any EQUI, STRU, or TREA in the Equipment Inventory seven working days prior to the commencement/start of any change. The documentation must be submitted with the annual report. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]


STRU 24 20298


A permit amendment will be needed regardless of the emissions increase if the change will be subject to a new applicable requirement or requires revisions to the limits or monitoring and recordkeeping in this permit. [Minn. R. 7007.0800, subp. 2]

STRU 24 20299

Volatile Organic Compounds: The Permittee shall conduct a performance test due before 3/2/2022 and every 60 months thereafter to measure total mass of VOC emissions (lb/hr).

The first test is due by the date specified and all subsequent tests shall be completed every 60 months thereafter by the set due date (month and day) and as described below. The performance test shall be conducted at worst‐case conditions as defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 25A and Method 18 or 320, or other method approved by MPCA in the performance test plan approval. A table of performance test operating parameters and test methods is contained in Appendix D. This permit contains short‐term process throughput limits. Short‐term process throughput limits will be defined by the operating rates sustained during the test, and may be reset with a Notice of Compliance or Notice of Test Verification letter.



STRU 24 20300

Volatile Organic Compounds: The Permittee shall conduct a performance test due before 3/2/2022 and at a minimum every 60 months therea er to measure VOC percent overall control efficiency of the scrubber (%).

The first test is due by the date specified above and all subsequent tests shall be completed every 60 months thereafter by the due date (month and day) and as described below. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 25A at the inlet and outlet to the control equipment, or other method approved by MPCA in the performance test plan approval. The test shall be conducted concurrent with the VOC as mass testing conducted for STRU 24. If the VOC testing frequency is reset via a Notice of Compliance/Notice of Verification letter, the VOC percent overall control efficiency performance test frequency shall be reset to match. A table of performance test operating parameters and test methods is contained in Appendix D. This permit contains short‐term process throughput limits. Short‐term process throughput limits will be defined by the operating rates sustained during the test, and may be reset with a No ce of Compliance or No ce of Test Verifica on le er.

Testing conducted during the 60 days prior to the performance test due date will not reset the test due date for future tes ng as required by this permit or within a No ce of Compliance le er.



STRU 24 20301

HAPs ‐ Single: The Permittee shall conduct a performance test due before 3/2/2022 and at a minimum every 60 months thereafter to verify the emission factors of speciated HAPS (lb/hr).

The first test is due by the date specified above. Subsequent tests shall be completed thereafter concurrent with the VOC as mass testing conducted for STRU 24. As the VOC as mass performance test satisfies the HAPs ‐ single testing requirement, if the VOC testing frequency is reset via a Notice of Compliance/Notice of Verification letter, the HAP testing frequency shall be reset to match.

The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 18 or Method 320, or other method approved by MPCA in the performance test plan approval. At a minimum, the Permittee must test for the compounds identified in Appendix D. [Minn. R. 7017.2020, subp. 1, Title I Condition: Avoid major source under 40 CFR 63.2]

STRU 24 20302

HAPs ‐ Single: The Permittee shall conduct a performance test due before 3/2/2022 to measure the speciated HAPs control equipment inlet rate (lb/hr) and process vent gas overall composition (percent by weight). The performance test shall be conducted at worst‐case conditions as defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 18 or Method 320 at the inlet to the scrubber, or other method approved by MPCA in the performance test plan approval. At a minimum, the Permittee must test for the compounds identified in Appendix D.

The Permittee shall confirm that acetaldehyde is not present in the process vent in concentrations greater than 0.1 percent by weight. If the measured process vent acetaldehyde concentration exceeds 0.1 percent by weight, the Permittee shall comply with 40 CFR pt. 63, subp. VVVVVV. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7017.2020, subp. 1]

STRU 24 20303


STRU 25 3680

See subject item TREA 23 (Vent Gas (Distillation) Scrubber) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

STRU 25 3690

The Permittee must vent emissions from all emission units that vent to STRU 25 to a scrubber that meets the requirements of TREA 23 whenever any emission unit that vents to STRU 25 operates, and must operate and maintain a scrubber that meets the requirements of TREA 23 at all times that any emissions vent to it. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

STRU 25 3700

Volatile Organic Compounds <= 4.750 pounds per hour as total mass of VOC, using 3‐hour average. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

STRU 25 20290

Opacity <= 20 percent opacity. This limit applies individually to each unit that vents through STRU 25. This limit applies individually to EQUIs 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 109, 110, 111, 112, 113, 127, 128, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, and 150, in addition to any units that are added using the flexibility provisions of this permit. [Minn. R. 7011.0715, subp. 1(B)]

STRU 25 20291

Particulate Matter <= 0.30 grains per dry standard cubic foot of exhaust gas unless required to further reduce emissions to comply with the less stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735. This limit applies individually to each unit that vents through STRU 25. This limit applies individually to EQUIs 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 109, 110, 111, 112, 113, 127, 128, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, and 150, in addition to any units that are added using the flexibility provisions of this permit. [Minn. R. 7011.0715, subp. 1(A)]


STRU 25 20292

Short‐term Process Throughput <= 742.0 gallons per minute 3‐hour block average beer feed rate as determined during the 03/01/2017 performance test, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3(B) as detailed in the Protocol for Resetting Short‐Term Process Throughput Limits below. The beer feed rate will be measured from the beerwell to the beer stripper based on a flowmeter (gpm). The Permittee must maintain at the facility adequate flow monitor records to demonstrate continuous compliance with these operating condition limitations for the applicable averaging period. The facility must use a continuous hard‐copy recorder or a data acquisition system to take and record readings to comply with the process throughput limits as a 3‐hour block average. Any data acquisition system must be equipped with a computer historian, and be capable of providing the necessary records for calculating the required 3‐hour block averages. The Permittee is responsible for assuring compliance with the short‐term throughput limits on a 3‐hour block average through daily calculations or by maintaining maximum throughputs below the short‐term throughput limits. Missed Readings and recorded values outside the indicator ranges specified in this permit are considered deviations as defined by Minn. R. 7007.0100, subp. 8a and must be reported on the applicable DRF Form. [Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]


The Permittee shall conduct performance testing to measure VOC emission rate and VOC control efficiency as required elsewhere in this permit. If an established Short‐Term Process Throughput Limit is to be reset, the reset shall be based on the Short‐Term Process Throughput Limit values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated.

During each performance test, the Permittee must monitor the beer feed rate and any other process and control parameters detailed in Appendix D. A printout of the records relied upon during testing, and used to calculate the short‐term throughput limit must be included with the performance test results and submitted to the Commissioner with the performance test report. The Permittee shall calculate the average beer feed rate for each individual compliant test run. Down me of 15 minutes or more is not to be included as opera ng me.


‐ If the test results are less than or equal to 80% of tested STRU 25 emission limits, the short‐term process throughput limit may be reset to 110% of the average throughput rate measured during the test runs; ‐ If the test results are greater than 80% of any STRU 25 emission limit, the short‐term process throughput limit will be reset to the average throughput rate measured during tes ng.

The new Short‐Term Process Throughput Limit shall be effective upon receipt of the Notice of Compliance/Notice of Test Verification letter that approves the test results and shall be incorporated into the permit when the permit is next amended. The Short‐Term Process Throughput Limit must remain in the permit to define the maximum allowable capacity of the process, as well as to reflect process throughput rates established during performance testing. [Minn. R. 7007.0800, subp. 2(A), Minn. R. 7017.2017, Minn. R. 7017.2030, subps. 1‐4, Minn. R. 7017.2045, subps. 1‐2, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]20293STRU 25


STRU 25 20294



1. Performance Test Notification (written): due 30 to 90 days before performance test at an increased process throughput rate. In the notification, the Permittee shall identify the date on which they wish to be authorized to exceed the short‐term throughput limit, if prior to the test date.2. The Permittee may exceed the existing short‐term process throughput limit upon MPCA receipt of the notification of a performance test at a higher process throughput.3. The short‐term process throughput limit will be reset through receipt of a Notice of Compliance/Notice of Test Verification letter using the considerations described in the short‐term throughput limit above.4. The Permittee must calculate actual emissions (i.e. for deviations, emission inventory or any other purpose) using the emission rate from the increased process throughput performance test retroactive to the date identified in the Performance Test Notification.


STRU 25 20295


STRU 25 20296


STRU 25 20297

Equipment Flexibility Language: If the Permittee adds, modifies or replaces any equipment that vents emissions to STRU 25, such equipment is subject to all of the requirements of STRU 25, as well as those listed at the total facility (TFAC 2) and within the Permit Appendices.

Additionally:

1. All of the existing, new, modified and replaced equipment that vents to STRU 25, as identified in the Equipment Inventory including changes identified in the most current Annual Report, must be controlled by a scrubber that meets the requirements of TREA 23 at all times that any of the equipment vents to STRU 25. This includes requirements for minimum control efficiency identified at TREA 23;2. Any increase in short‐term process throughput rates beyond that authorized in the "Short‐term Process Throughput" limits at STRU 25, must be reestablished using the "Procedure to Increase Process Throughput Limit" requirement at STRU 25; 3. Emissions of VOC as mass must remain below the lb/hr limits specified at STRU 25; and4. The Permittee must document the changes to any EQUI, STRU, or TREA in the Equipment Inventory seven working days prior to the commencement/start of any change. The documentation must be submitted with the annual report. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

STRU 25 20298




STRU 25 20300





STRU 25 20301

Volatile Organic Compounds: The Permittee shall conduct a performance test due before 3/2/2022 and at a minimum every 60 months therea er to measure VOC percent overall control efficiency of the scrubber (%).

The first test is due by the date specified above and all subsequent tests shall be completed every 60 months thereafter by the due date (month and day) and as described below. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 25A at the inlet and outlet to the control equipment, or other method approved by MPCA in the performance test plan approval. The test shall be conducted concurrent with the VOC as mass testing conducted for STRU 25. If the VOC testing frequency is reset via a Notice of Compliance/Notice of Verification letter, the VOC percent overall control efficiency performance test frequency shall be reset to match. A table of performance test operating parameters and test methods is contained in Appendix D. This permit contains short‐term process throughput limits. Short‐term process throughput limits will be defined by the operating rates sustained during the test, and may be reset with a No ce of Compliance or No ce of Test Verifica on le er.

Testing conducted during the 60 days prior to the performance test due date will not reset the test due date for future tes ng as required by this permit or within a No ce of Compliance le er.


STRU 25 20302





STRU 25 20303


STRU 26 5

See subject items EQUI 55 (DDGS Dryer with Multiclone), EQUI 56 (DDGS Cooler), and TREA 25 (Thermal Oxidizer) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

STRU 26 6

The Permittee must vent emissions from all emission units that vent to STRU 26 to TREA 25 whenever any emission unit that vents to STRU 26 operates, except as otherwise authorized by this permit, and must operate and maintain TREA 25 at all times that any emissions vent to it. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

STRU 26 7

DDGS Dryer RTO Bypass: The Permittee is authorized to bypass the RTO and vent emissions from EQUI 55 (DDGS Dryer) to STRU 79 for up to 50 hours per year when the DDGS Dryer is not processing wetcake. See subject item STRU 79 (RTO Bypass Stack) of this permit for related requirements. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

STRU 26 8

DDGS Cooler RTO Bypass: The Permittee is authorized to bypass the dryer burners and RTO and vent emissions from EQUI 56 (DDGS Cooler) to STRU 80 for up to 50 hours per year. See subject item STRU 80 (DDGS Cooler Baghouse Stack) of this permit for related requirements. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

STRU 26 19910


STRU 26 19920


STRU 26 19930


STRU 26 20230

Volatile Organic Compounds <= 5.0 pounds per hour 3‐hour average as total mass of VOC, using 3‐hour average. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

STRU 26 20240

Carbon Monoxide <= 12.910 pounds per hour 3‐hour average. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

STRU 26 20250

Short‐term Process Throughput <= 493.0 gallons per minute 3‐hour block average centrifuge rate as determined during the 12/10/2014 performance test, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3(B) as detailed in the Protocol for Resetting Short‐Term Process Throughput Limits below. The centrifuge rate will be measured from the centrifuges to the DDGS dryer based on a flowmeter (gpm).

The Permittee must maintain at the facility adequate flow monitor records to demonstrate continuous compliance with these operating condition limitations for the applicable averaging period. The facility must use a continuous hard‐copy recorder or a data acquisition system to take and record readings to comply with the process throughput limits as a 3‐hour block average. Any data acquisition system must be equipped with a computer historian, and be capable of providing the necessary records for calculating the required 3‐hour block averages. The Permittee is responsible for assuring compliance with the short‐term throughput limits on a 3‐hour block average through daily calculations or by maintaining maximum throughputs below the short‐term throughput limits. Missed Readings and recorded values outside the indicator ranges specified in this permit are considered deviations as defined by Minn. R. 7007.0100, subp. 8a and must be reported on the applicable DRF Form. [Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]


STRU 26 20290

Short‐term Process Throughput <= 72.6 gallons per minute 3‐hour block average syrup feed rate to the dryer as determined during the 12/10/2014 performance test, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3(B) as detailed in the Protocol for Resetting Short‐Term Process Throughput Limits below. The syrup feed rate will be measured from the syrup tank to the DDGS dryer based on a flowmeter (gpm). The Permittee must maintain at the facility adequate flow monitor records to demonstrate continuous compliance with these operating condition limitations for the applicable averaging period. The facility must use a continuous hard‐copy recorder or a data acquisition system to take and record readings to comply with the process throughput limits as a 3‐hour block average. Any data acquisition system must be equipped with a computer historian, and be capable of providing the necessary records for calculating the required 3‐hour block averages. The Permittee is responsible for assuring compliance with the short‐term throughput limits on a 3‐hour block average through daily calculations or by maintaining maximum throughputs below the short‐term throughput limits. Missed Readings and recorded values outside the indicator ranges specified in this permit are considered deviations as defined by Minn. R. 7007.0100, subp. 8a and must be reported on the applicable DRF Form. [Minn. R. 7017.2025, subp. 3, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

Protocol for Resetting Short‐Term Process Throughput Limits:

The Permittee shall conduct performance testing to measure the PM/PM10/PM2.5 emission rate, CO emission rate, VOC emission rate, and VOC control efficiency as required elsewhere in this permit. If an established Short‐Term Process Throughput Limit is to be reset, the reset shall be based on the Short‐Term Process Throughput Limit values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated.

During each performance test, the Permittee must monitor the centrifuge rate and syrup feed rate, and any other process and control parameters detailed in Appendix D. A printout of the records relied upon during testing, and used to calculate the short‐term throughput limit must be included with the performance test results and submitted to the Commissioner with the performance test report. The Permittee shall calculate the average centrifuge rate and syrup feed rate for each individual compliant test run. Downtime of 15 minutes or more is not to be included as operating time.


‐ If the test results are less than or equal to 80% of tested STRU 26 emission limits, the short‐term process throughput limit associated with the tested pollutant may be reset to 110% of the average throughput rate measured during the test runs;

‐ If the test results are greater than 80% of any STRU 26 emission limit, the short‐term process throughput limit associated with the tested pollutant will be reset to the average throughput rate measured during testing.

‐ The permit contains multiple short‐term throughput limits for the same feed rates which may be reset independently as a result of performance testing. The Permittee must comply with all short‐term process limits set for each stack.

The new Short‐Term Process Throughput Limit shall be effective upon receipt of the Notice of Compliance/Notice of Test Verification letter that approves the test results and shall be incorporated into the permit when the permit is next amended. The Short‐Term Process Throughput Limit must remain in the permit to define the maximum allowable capacity of the process, as well as to reflect process throughput rates established during performance testing. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.2017, Minn. R. 7017.2030, subps. 1‐4, Minn. R. 7017.2045, subps. 1‐2, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]20402STRU 26


STRU 26 20403

Procedure to Increase Process Throughput Limits:

The Permittee may increase the process throughput limits and reset control equipment operating parameters by conducting a performance test at an operating rate that exceeds the permitted process throughput limit and meeting requirements 1 through 4 below.


2. The Permittee may exceed the existing short‐term process throughput limit upon MPCA receipt of the notification of performance test at a higher process throughput (required by item 1 above).




STRU 26 20404


STRU 26 20405


STRU 26 20406

Equipment Flexibility Language: If the Permittee adds, modifies or replaces any equipment that vents emissions to STRU 26, such equipment, with exceptions noted below, is subject to all of the requirements of STRU 26, as well as those listed at the total facility (TFAC 2), EQUI 55, at EQUI 56, at STRU 79, at STRU 80, and within the Permit Appendices.

Additionally:

1.Except as identified below, all of the existing, new, modified and replaced equipment that vents to STRU 26, as identified in the Equipment Inventory including changes identified in the most current Annual Report, must be controlled by a RTO that meets the requirements of TREA 25 at all times that any of the equipment vents to STRU 26. This includes requirements for minimum control efficiency identified at TREA 25;2. Any increase in short‐term process throughput rates beyond that authorized in the “Short‐term Process Throughput” limits at STRU 26 must be reestablished using the “Procedure to Increase Process Throughput Limit” requirement at STRU 26;3. The Permittee may not use the flexibility provisions of this permit to replace, add or modify any dryer (or dryer with multiclones). The appropriate permit amendment must be submitted;

4. Emissions of VOC as mass, PM, PM10, PM2.5, and CO must remain below the lb/hr limits specified at STRU 26; and

5. The Permittee must document the changes to any EQUI, STRU, or TREA in the Equipment Inventory seven working days prior to the commencement/start of any change. The documentation must be submitted with the annual report. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]


STRU 26 20407



STRU 26 20408

Particulate Matter: The Permittee shall conduct a performance test due before 12/11/2019 and every 60 months thereafter to measure emissions (lb/hr and gr/dscf).




STRU 26 20409






STRU 26 20410





STRU 26 20411

Carbon Monoxide: The Permittee shall conduct a performance test due before 12/11/2019 and every 60 months thereafter to measure emissions (lb/hr).

The first test is due by the date specified and all subsequent tests shall be completed every 60 months thereafter by the set due date (month and day) and as described below. The performance test shall be conducted at worst‐case conditions as defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 10, or other method approved by MPCA in the performance test plan approval. A table of performance test operating parameters and test methods is contained in Appendix D. This permit contains short‐term process throughput limits. Short‐term process throughput limits will be defined by the operating rates sustained during the test, and may be reset with a Notice of Compliance or Notice of Test Verification letter.




STRU 26 20412





STRU 26 20413

Volatile Organic Compounds: The Permittee shall conduct a performance test due before 12/11/2019 and at a minimum every 60 months thereafter to measure VOC percent overall control efficiency of the thermal oxidizer (%).

The first test is due by the date specified above and all subsequent tests shall be completed every 60 months thereafter by the due date (month and day) and as described below. The performance test shall be conducted at worst‐case conditions defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 25A at the inlet and outlet to the control equipment, or other method approved by MPCA in the performance test plan approval. The test shall be conducted concurrent with the VOC as mass testing conducted for STRU 26. If the VOC testing frequency is reset via a Notice of Compliance/Notice of Verification letter, the VOC percent overall control efficiency performance test frequency shall be reset to match. A table of performance test operating parameters and test methods is contained in Appendix D. This permit contains short‐term process throughput limits. Short‐term process throughput limits will be defined by the operating rates sustained during the test, and may be reset with a Notice of Compliance or Notice of Test Verification letter.



STRU 26 20414





STRU 26 20415

Sulfur Dioxide: The Permittee shall conduct a performance test due before 12/11/2019 and every 120 months thereafter to verify the emission factor of 7.93 pounds of sulfur dioxide per hour.

The first test is due by the date specified and all subsequent tests shall be completed every 120 months thereafter by the set due date (month and day) and as described below. The performance test shall be conducted at worst‐case conditions as defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 6C, or other method approved by MPCA in the performance test plan approval. A table of performance test operating parameters and test methods is contained in Appendix D.


Testing conducted more than 60 days prior to the performance test due date satisfies this test due date requirement but will reset future performance test due dates based on the performance test date. [Minn. R. 7017.2020, subp. 1]

STRU 26 20416

Nitrogen Oxides: The Permittee shall conduct a performance test due before 12/11/2024 and every 120 months thereafter to verify the emission factor of 2.66 pounds of nitrogen oxides per hour.

The first test is due by the date specified and all subsequent tests shall be completed every 120 months thereafter by the set due date (month and day) and as described below. The performance test shall be conducted at worst‐case conditions as defined at Minn. R. 7017.2005, subp. 8 or at the operating conditions described at Minn. R. 7017.2025, subp. 2, using EPA Reference Methods 7E, or other method approved by MPCA in the performance test plan approval. A table of performance test operating parameters and test methods is contained in Appendix D.


Testing conducted more than 60 days prior to the performance test due date satisfies this test due date requirement but will reset future performance test due dates based on the performance test date. [Minn. R. 7017.2020, subp. 1]

STRU 26 20417


STRU 79 1

Authorized Bypass Use: Operating Hours <= 50 hours per year 12‐month rolling sum of RTO bypass when the DDGS Dryer is not processing wetcake. Any other use of STRU 79 shall be considered emergency bypass and shall be reported as a deviation. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

STRU 79 2

Emergency Bypass Use: Except for authorized bypass use allowed by this permit, the Permittee may bypass an RTO meeting the permit requirements of TREA 25 when the DDGS dryer (EQUI 55) is in operation only when plant or worker safety would be in jeopardy without the use of the bypass. Each period of such bypass use, while the DDGS dryer is operated, shall be recorded in the daily operating record. The record shall include the date, start time of use, duration of use, and the facility operating conditions during its use. For periods of such bypass use while the DDGS dryer is operated, the Permittee shall conduct a root‐cause failure analysis of the event and submit a report of the analysis to the Commissioner within 15 days. The emissions emitted during such a bypass event shall be considered uncontrolled and shall be reported as a deviation. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

STRU 79 3

Authorized Bypass Use: Daily Recordkeeping. On each day of operation, the Permittee shall record and maintain the date, start time of authorized bypass use, duration of authorized bypass use, and the facility operating conditions during its use (whether or not the dryer is processing wetcake). [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]


STRU 79 4

Authorized Bypass Use: Monthly Recordkeeping. By the 15th day of each month, the Permittee must calculate and record the following:

1) the monthly Hours of Operation of authorized bypass use during the previous month by summing the daily Hours of Operation records for that month; and

2) the 12‐month rolling sum Hours of Operation of authorized bypass use for the previous 12‐month period by summing the Hours of Operation data for the previous 12 months. [Minn. R. 7007.0800, subps. 4‐5]

STRU 80 1

Authorized Bypass Use: Operating Hours <= 50 hours per year 12‐month rolling sum of DDGS Cooler (EQUI 55) RTO bypass. The emissions emitted during authorized bypass events shall be considered uncontrolled. Any other use of STRU 80 shall be considered emergency bypass and shall be reported as a deviation. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

STRU 80 2

Emergency Bypass Use: Except for authorized bypass use allowed by this permit, the Permittee may bypass the dryer burners (EQUI 55) and an RTO meeting the permit requirements of TREA 25 when the DDGS cooler (EQUI 56) is operating only when plant or worker safety would be in jeopardy without the use of the bypass. Each period of such bypass use, while the DDGS cooler is operating, shall be recorded in the daily operating record. The record shall include the date, start time of use, duration of use, and the facility operating conditions during its use. For such periods of bypass use while the DDGS cooler is operating, the Permittee shall conduct a root‐cause failure analysis of the event and submit a report of the analysis to the Commissioner within 15 days. The emissions emitted during such a bypass event shall be considered uncontrolled and shall be reported as a deviation. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

STRU 80 3

Authorized Bypass Use: Daily Recordkeeping. On each day of operation, the Permittee shall record and maintain the date, start time of authorized bypass use, and duration of authorized bypass use. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

STRU 80 4

Authorized Bypass Use: Monthly Recordkeeping. By the 15th day or each month, the Permittee must calculate and record the following:

1) the monthly Hours of Operation of authorized bypass use during the previous month by summing the daily Hours of Opera on records for that month; and

2) the 12‐month rolling sum Hours of Operation of authorized bypass use for the previous 12‐month period by summing the Hours of Operation data for the previous 12 months. [Minn. R. 7007.0800, subps. 4‐5]

TREA 7 1

See subject item STRU 7 (Grain Receiving with Baghouse) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

TREA 7 3350

The Permittee must vent emissions from any emission unit that vents to STRU 7 to a fabric filter that meets the requirements of TREA 7 whenever any emission unit that vents to STRU 7 operates, and must operate and maintain a fabric filter that meets the requirements of TREA 7 at all times that any emissions vent to it. The Permittee must document periods of non‐operation of the control equipment. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 7 3360

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Particulate Matter >= 99 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 7 3430

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for PM < 10 micron >= 93 percent control efficiency. [Minn. R. 7007.0100, subp. 7(A)7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 7 3440

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for PM < 2.5 micron >= 93 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]


TREA 7 16460

Particulate Matter >= 80 percent collection efficiency for the control equipment. [Minn. R. 7011.1005, subp. 3(E)]

TREA 7 17110

Operating Scenario 1: Pressure Drop >= 0.5 and <= 6.0 inches of water whenever emissions are venting to the fabric filter, unless a new range is set pursuant to Minn. R. 7017.2025, subp. 3 based on the values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated. The new range shall be implemented upon receipt of the Notice of Compliance letter granting preliminary approval. The range is final upon issuance of a permit amendment incorporating the change. The Permittee shall record the pressure drop at least once every 24 hours. [40 CFR 64.3(a)(2), Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.0200, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 7 17120

Operating Scenario 2: Pressure Drop >= 0.0 inches of water or <= 0.0 inches of water when no emissions are venting to the fabric filter. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 7 17130

If the Permittee replaces or modifies a fabric filter that meets the requirements of TREA 7, such control equipment must meet or exceed the control efficiency requirements of TREA 7 as well as comply with all other requirements of TREA 7, TFAC 2, STRU 7 and Permit Appendix C. Prior to making such a change, the Permittee must apply for and obtain the appropriate permit amendment, as applicable.

Additionally, the Permittee must:

1. Justify and document that the system installed after the fabric filter is replaced or modified can achieve a grain outlet concentration (gr/dscf) less than or equal to that listed within Appendix C of this permit, for PM, PM10 and PM2.5. The documentation shall discuss differences between the new and prior systems and include manufacturer guarantee for grain outlet concentration for the new system. If the manufacturer guarantee is greater than the listed value within Appendix C, the Permittee shall complete an analysis based upon performance test data from a similar operation (equivalent or better control technology and similar materials being controlled) to determine an estimated design outlet grain outlet concentration that is less than or equal to that listed within Appendix C, for PM, PM10 and PM2.5. The analysis must be based upon the results of the performance test data, and conservatively take into account differences in inlet grain loading and airflow. Documentation must be submitted with the Annual Report.2. Ensure the airflow (dscfm) for the replaced or modified fabric filter meets or exceeds the airflow listed in Appendix C. Provide verification of the design airflow from the manufacturer or vendor with the Annual Report. If the airflow is less than the airflow listed in Appendix C, an Equivalent or Better Dispersion (EBD) analysis is triggered. The EBD analysis must follow the procedures described at TFAC 2.


TREA 7 17130

3. Provide a calculation, based on the airflow and grain outlet concentration, verifying that emissions of PM, PM10 and PM2.5 will remain below the lb/hr limits specified at STRU 7. Documentation must be submitted with the Annual Report.4. Provide a copy of the EBD Modeling Results, if one is triggered, in the Annual Report.5. Submit notification of intent to conduct a performance test of any modified or replaced fabric filter. This fabric filter controls emissions that are subject to performance testing at STRU 7.6. Conduct a performance test for PM, PM10, and PM2.5 (gr/dscf and lb/hr) within 90 days of initial startup of a modified or replaced fabric filter, following the Performance Testing language at TFAC 2 and the “Procedure to Increase Process Throughput Limit” requirements at STRU 7. The performance test may reset the short‐term throughput limit at STRU 7, must confirm compliance with emission limits identified at STRU 7, and must verify that the fabric filter can achieve the outlet concentration (gr/dscf) and airflow identified in Appendix C. 7. Comply with updated performance test due dates and frequency at STRU 7 as identified within a Notice of Compliance letter.8. Document the changes to any TREA in the Equipment Inventory (Appendix C as updated), seven working days prior to the commencement/start of any change. Documentation must be submitted with the Annual Report.9. The Permittee may increase the existing short‐term process throughput limit at STRU 7 by using the “Procedure to Increase Process Throughput Limit” at STRU 7. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 7 17170

Prior to replacing the control equipment, the Permittee must apply for and obtain the appropriate permit amendment, as applicable. It is possible that the change may trigger a Title I modification, or another type of modification under state rules. The Permittee must complete the calculations and analysis as described in Minn. R. 7007.1200, subp. 2 and subp. 3 for any change.


TREA 7 17180

The Permittee shall maintain air pollution control equipment in proper operating condition and utilize the air pollution control systems as designed. [Minn. R. 7011.1005, subp. 1(B)]

TREA 7 17190

The Permittee shall operate and maintain the fabric filter in accordance with the Operation and Maintenance (O & M) Plan. The Permittee shall keep copies of the O & M Plan available onsite for use by staff and MPCA staff. [Minn. R. 7007.0800, subp. 14]

TREA 7 17200

Daily Inspections: The Permittee shall do the following, once every 24 hours: 1). Inspect the fabric filter stack STRU 7 for any visible emissions during daylight hours, except during inclement weather. 2). During inclement weather, read and record the pressure drop across the fabric filter. [40 CFR 64.3, Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.0200, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 7 17210

Pressure Drop: Monitoring Equipment: The Permittee shall install and maintain the necessary monitoring equipment for measuring and recording pressure drop as required by this permit. The monitoring equipment must be installed, in use, and properly maintained when the monitored fabric filter is in operation. [40 CFR 64.7(b), Minn. R. 7017.0200]

TREA 7 17240

Annual Calibration: The Permittee shall calibrate the gauges or replace with calibrated gauges at least once every 12 months and shall maintain a written record of any action resulting from the calibration or the replacement. [40 CFR 64.3, Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 5, Minn. R. 7017.0200]

TREA 7 17250

Periodic Inspections: At least once per calendar quarter, or more frequently as required by the manufacturing specifications, the Permittee shall inspect the control equipment components. The Permittee shall maintain a written record of these inspections. [40 CFR 64.3, Minn. R. 7017.0200]


TREA 7 17260

Recordkeeping of Visible Emissions and Pressure Drop: At least once during every 24‐hour period, the Permittee shall record 1) the results of the visible emission inspection or the pressure drop across the fabric filter, 2) the time and date of the recording, 3) the applicable Operating Scenario (whether or not emissions are being vented to the fabric filter) and 4) whether or not there were visible emissions or if the pressure drop recording is within the indicator range for the Operating Scenario specified in this permit. The presence of visible emissions, or recorded values outside the range specified in this permit are considered deviations as defined by Minn. R. 7007.0100, subp. 8a and are considered excursions as defined by 40 CFR 64.1. [40 CFR 64.3, Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.0200, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 7 17261

Continued operation. Except for monitoring malfunctions, associated repairs, and required quality assurance or control activities, the Permittee shall conduct all monitoring in continuous operation (or shall collect data at all required intervals) at all times that the pollutant‐specific emissions unit is operating. Data recorded during monitoring malfunctions, associated repairs, and required quality assurance or control activities shall not be used. A monitoring malfunction is any sudden, infrequent, not reasonably preventable failure of the monitoring to provide valid data. [40 CFR 64.7(c), Minn. R. 7017.0200]

TREA 7 17262

Response to excursions. Upon detecting an excursion or exceedance, the Permittee shall restore operation of the pollutant‐specific emissions unit (including the control device and associated capture system) to its normal or usual manner of operation as expeditiously as practicable in accordance with good air pollution control practices for minimizing emissions. The response shall include minimizing the period of any startup, shutdown or malfunction and taking any necessary corrective actions to restore normal operation and prevent the likely recurrence of the cause of an excursion or exceedance. [40 CFR 64.7(d)(1), Minn. R. 7017.0200]

TREA 7 17263

Correc ve Ac ons: The Permi ee shall take correc ve ac on as soon as possible if any of the following occur:

‐ visible emissions are observed; or‐ the recorded pressure drop is outside the required opera ng range; or‐ the fabric filter or any of its components are found during the inspec ons to need repair.

Corrective actions shall return the pressure drop to within the permitted range, eliminate visible emissions, and/or include completion of necessary repairs identified during the inspection, as applicable. Corrective actions include, but are not limited to, those outlined in the O & M Plan for the fabric filter. The Permittee shall keep a record of the type and date of any corrective action taken for each filter. [40 CFR 64.7(d), Minn. R. 7017.0200]

TREA 7 17264

Documentation of Need for Improved Monitoring: If the Permittee fails to achieve compliance with an emission limitation or standard for which the monitoring did not provide an indication of an excursion or exceedance while providing valid data, or the results of compliance or performance testing document a need to modify the existing pressure drop range, the Permittee shall promptly notify the MPCA and, if necessary, submit a permit amendment application to address the necessary monitoring change. [40 CFR 64.7(e), Minn. R. 7017.0200]

TREA 7 17265

The Permittee shall maintain records of monitoring data, monitor performance data, corrective actions taken, and other supporting information required to be maintained. The Permittee may maintain records on alternative media, such as microfilm, computer files, magnetic tape disks, or microfiche, provided that the use of such alternative media allows for expeditious inspection and review, and does not conflict with other applicable recordkeeping requirements. [40 CFR 64.9(b), Minn. R. 7017.0200]

TREA 7 17266

As required by 40 CFR Section 64.9(a)(2), for the Semi‐Annual Deviations Report required by this permit and/or the Notification of Deviations Endangering Human Health and the Environment required by this permit, as applicable, the Permittee shall include the following related to the monitoring identified as required by 40 CFR pt. 64: 1) Summary information on the number, duration, and cause of excursions or exceedances, as applicable, and the corrective action taken; and 2) Summary information on the number, duration, and cause for monitor downtime incidents. [40 CFR 64.9(a)(2), Minn. R. 7017.0200]


TREA 7 17267

Quality Improvement Plan (QIP) requirements. If there is an accumulation of 6 or more excursions during the six‐month reporting period, the Permittee must develop and implement a QIP in accordance with 40 CFR Section 64.8(b). The QIP must be available for inspection. [40 CFR 64.8, Minn. R. 7017.0200]

TREA 7 17268

If a QIP is required, the Permittee shall develop and implement the QIP as expeditiously as practicable and shall notify the MPCA if the period for completing the improvements contained in the QIP exceeds 180 days from the date on which the need to implement the QIP was determined. [40 CFR 64.8(c), Minn. R. 7017.0200]

TREA 7 17270

Following implementation of a QIP, the Administrator or the MCPA may require that the Permittee make reasonable changes to the QIP if the QIP is found to have: (1) Failed to address the cause of the control device performance problems; or (2) Failed to provide adequate procedures for correcting control device performance problems as expeditiously as practicable in accordance with good air pollution control practices for minimizing emissions. [40 CFR 64.8(d), Minn. R. 7017.0200]

TREA 7 17271

Implementation of a QIP shall not excuse the Permittee from compliance with any existing emission limitation or standard, or any existing monitoring, testing, reporting or recordkeeping requirement that may apply. [40 CFR 64.8(e), Minn. R. 7017.0200]

TREA 8 1

See subject item STRU 22 (Hammermill with Baghouse) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

TREA 8 3350

The Permittee must vent emissions from any emission unit that vents to STRU 22 to a fabric filter that meets the requirements of TREA 8 whenever any emission unit that vents to STRU 22 operates, and must operate and maintain a fabric filter that meets the requirements of TREA 8 at all times that any emissions vent to it. The Permittee must document periods of non‐operation of the control equipment. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 8 3360

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for PM < 10 micron >= 93 percent control efficiency. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 8 3430


TREA 8 16450


TREA 8 16460


TREA 8 17110





1. Justify and document that the system installed after the fabric filter is replaced or modified can achieve a grain outlet concentration (gr/dscf) less than or equal to that listed within Appendix C of this permit, for PM, PM10 and PM2.5. The documentation shall discuss differences between the new and prior systems and include manufacturer guarantee for grain outlet concentration for the new system. If the manufacturer guarantee is greater than the listed value within Appendix C, the Permittee shall complete an analysis based upon performance test data from a similar operation (equivalent or better control technology and similar materials being controlled) to determine an estimated design outlet grain outlet concentration that is less than or equal to that listed within Appendix C, for PM, PM10 and PM2.5. The analysis must be based upon the results of the performance test data, and conservatively take into account differences in inlet grain loading and airflow. Documentation must be submitted with the Annual Report.

2. Ensure the airflow (dscfm) for the replaced or modified fabric filter meets or exceeds the airflow listed in Appendix C. Provide verification of the design airflow from the manufacturer or vendor with the Annual Report. If the airflow is less than the airflow listed in Appendix C, an Equivalent or Better Dispersion (EBD) analysis is triggered. The EBD analysis must follow the procedures described at TFAC 2.

3. Provide a calculation, based on the airflow and grain outlet concentration, verifying that emissions of PM, PM10 and PM2.5 will remain below the lb/hr limits specified at STRU 22. Documentation must be submitted with the Annual Report.

4. Provide a copy of the EBD Modeling Results, if one is triggered, in the Annual Report.

5. Submit notification of intent to conduct a performance test of any modified or replaced fabric filter. This fabric filter controls emissions that are subject to performance testing at STRU 22.

6. Conduct a performance test for PM, PM10, and PM2.5 (gr/dscf and lb/hr) within 90 days of initial startup of a modified or replaced fabric filter, following the Performance Testing language at TFAC 2 and the “Procedure to Increase Process Throughput Limit” requirements at STRU 22. The performance test may reset the short‐term throughput limit at STRU 22, must confirm compliance with emission limits identified at STRU 22, and must verify that the fabric filter can achieve the outlet concentration (gr/dscf) and airflow identified in Appendix C.

7. Comply with updated performance test due dates and frequency at STRU 22 as identified within a Notice of Compliance letter.

8. Document the changes to any TREA in the Equipment Inventory (Appendix C as updated), seven working days prior to the commencement/start of any change. Documentation must be submitted with the Annual Report.

9. The Permittee may increase the existing short‐term process throughput limit at STRU 22 by using the “Procedure to Increase Process Throughput Limit” at STRU 22. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]17130TREA 8


TREA 8 17160



TREA 8 17170


TREA 8 17180


TREA 8 17190

Daily Inspections: The Permittee shall do the following, once every 24 hours: 1). Inspect the fabric filter stack STRU 22 for any visible emissions during daylight hours, except during inclement weather. 2). During inclement weather, read and record the pressure drop across the fabric filter. [40 CFR 64.3, Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.0200, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 8 17200


TREA 8 17230


TREA 8 17240


TREA 8 17250

Recordkeeping of Visible Emissions and Pressure Drop: At least once during every 24‐hour period, the Permittee shall record 1) the results of the visible emission inspection or the pressure drop across the fabric filter, 2) the time and date of the recording, 3) the applicable Operating Scenario (whether or not emissions are being vented to the fabric filter) and 4) whether or not there were visible emissions or if the pressure drop recording is within the indicator range for the Operating Scenario specified in this permit. The presence of visible emissions, or recorded values outside the range specified in this permit are considered deviations as defined by Minn. R. 7007.0100, subp. 8a and are considered excursions as defined by 40 CFR 64.1. [40 CFR 64.3, Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.0200, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 8 17260


TREA 8 17262



TREA 8 17263



Corrective actions shall return the pressure drop to within the permitted range, eliminate visible emissions, and/or include completion of necessary repairs identified during the inspection, as applicable. Corrective actions include, but are not limited to, those outlined in the O & M Plan for the fabric filter. The Permittee shall keep a record of the type and date of any corrective action taken for each filter. [40 CFR 64.7(d), Minn. R. 7017.0200]

TREA 8 17264


TREA 8 17265


TREA 8 17266


TREA 8 17267


TREA 8 17268


TREA 8 17270

Following implementation of a QIP, the Administrator or the MCPA may require that the Permittee make reasonable changes to the QIP if the QIP is found to have: (1) Failed to address the cause of the control device performance problems; or (2) Failed to provide adequate procedures for correcting control device performance problems as expeditiously as practicable in accordance with good air pollution control practices for minimizing emissions. [40 CFR 64.8(d), Minn. R. 7017.0200]

TREA 8 17271

Implementation of a QIP shall not excuse the Permittee from compliance with any existing emission limitation or standard, or any existing monitoring, testing, reporting or recordkeeping requirement that may apply. [40 CFR 64.8(e), Minn. R. 7017.0200]

TREA 11 1

See subject item STRU 23 (DDGS Loadout with Baghouse) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

TREA 11 3350

The Permittee must vent emissions from any emission unit that vents to STRU 23 to a fabric filter that meets the requirements of TREA 11 whenever any emission unit that vents to STRU 23 operates, and must operate and maintain a fabric filter that meets the requirements of TREA 11 at all times that any emissions vent to it. The Permittee must document periods of non‐operation of the control equipment. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subp. 4, Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]


TREA 11 3360


TREA 11 3430


TREA 11 17262


TREA 11 17264

Pressure Drop >= 0.5 and <= 6.0 inches of water (Pressure Drop Range Limit), unless a new range is set pursuant to Minn. R. 7017.2025, subp. 3 based on the values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated. The new range shall be implemented upon receipt of the Notice of Compliance letter granting preliminary approval. The range is final upon issuance of a permit amendment incorporating the change. If the recorded pressure drop is outside the required range, the emissions during that time shall be considered uncontrolled until the pressure drop is once again within the required range. The period of time for which the pressure drop is considered out of range shall be reported as a deviation. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 11 18480



1. Justify and document that the system installed after the fabric filter is replaced or modified can achieve a grain outlet concentration (gr/dscf) less than or equal to that listed within Appendix C of this permit, for PM, PM10 and PM2.5. The documentation shall discuss differences between the new and prior systems and include manufacturer guarantee for grain outlet concentration for the new system. If the manufacturer guarantee is greater than the listed value within Appendix C, the Permittee shall complete an analysis based upon performance test data from a similar operation (equivalent or better control technology and similar materials being controlled) to determine an estimated design outlet grain outlet concentration that is less than or equal to that listed within Appendix C, for PM, PM10 and PM2.5. The analysis must be based upon the results of the performance test data, and conservatively take into account differences in inlet grain loading and airflow. Documentation must be submitted with the Annual Report.2. Ensure the airflow (dscfm) for the replaced or modified fabric filter meets or exceeds the airflow listed in Appendix C. Provide verification of the design airflow from the manufacturer or vendor with the Annual Report. If the airflow is less than the airflow listed in Appendix C, an Equivalent or Better Dispersion (EBD) analysis is triggered. The EBD analysis must follow the procedures described at TFAC 2.


TREA 11 18480

3. Provide a calculation, based on the airflow and grain outlet concentration, verifying that emissions of PM, PM10 and PM2.5 will remain below the lb/hr limits specified at STRU 23. Documentation must be submitted with the Annual Report.4. Provide a copy of the EBD Modeling Results, if one is triggered, in the Annual Report.5. Submit notification of intent to conduct a performance test of any modified or replaced fabric filter. This fabric filter controls emissions that are subject to performance testing at STRU 23.6. Conduct a performance test for PM, PM10, and PM2.5 (gr/dscf and lb/hr) within 90 days of initial startup of a modified or replaced fabric filter, following the Performance Testing language at TFAC 2 and the “Procedure to Increase Process Throughput Limit” requirements at STRU 23. The performance test may reset the short‐term throughput limit at STRU 23, must confirm compliance with emission limits identified at STRU 23, and must verify that the fabric filter can achieve the outlet concentration (gr/dscf) and airflow identified in Appendix C. 7. Comply with updated performance test due dates and frequency at STRU 23 as identified within a Notice of Compliance letter.8. Document the changes to any TREA in the Equipment Inventory (Appendix C as updated), seven working days prior to the commencement/start of any change. Documentation must be submitted with the Annual Report.9. The Permittee may increase the existing short‐term process throughput limit at STRU 23 by using the “Procedure to Increase Process Throughput Limit” at STRU 23. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 11 18500



TREA 11 18520


TREA 11 18530


TREA 11 18550

Visible Emissions: The Permittee shall check the fabric filter stack STRU 23 for any visible emissions once each day of operation during daylight hours. During inclement weather, the Permittee shall read and record the pressure drop across the fabric filter, once each day of operation. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 11 18560

Monitoring Equipment: The Permittee shall install and maintain the necessary monitoring equipment for measuring and recording pressure drop as required by this permit. The monitoring equipment must be installed, in use, and properly maintained when the monitored fabric filter is in operation. [Minn. R. 7007.0800, subp. 4]

TREA 11 18570

Periodic Inspections: At least once per calendar quarter, or more frequently as required by the manufacturing specifications, the Permittee shall inspect the control equipment components. The Permittee shall maintain a written record of these inspections. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 4, Minn. R. 7007.0800, subp. 5]

TREA 11 18600

Recordkeeping of Visible Emissions and Pressure Drop. The Permittee shall record the time and date of each visible emission inspection and pressure drop reading, and whether or not any visible emissions were observed, and whether or not the observed pressure drop was within the range specified in this permit. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]


TREA 11 19640



Corrective actions shall return the pressure drop to within the permitted range, eliminate visible emissions, and/or include completion of necessary repairs identified during the inspection, as applicable. Corrective actions include, but are not limited to, those outlined in the O & M Plan for the fabric filter. The Permittee shall keep a record of the type and date of any corrective action taken for each filter. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subp. 5]

TREA 21 2

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Volatile Organic Compounds >= 96.7 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 21 3

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Benzene >= 96.7 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 21 5

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Hexane >= 96.7 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 21 6

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Toluene >= 96.7 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 21 8

The Permittee shall vent emissions from EQUI 4 (Truck Ethanol Loadout) and EQUI 116 (Rail Ethanol Loadout) to a flare that meets the requirements of TREA 21 whenever EQUI 4 and EQUI 116 operate, and operate and maintain TREA 21 at all times that any emissions are vented to TREA 21. The Permittee shall document periods of non‐operation of the control equipment TREA 21 whenever EQUI 4 or EQUI 116 are operating. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 21 10 Fuel Type: Natural gas for supplemental fuel only, by design. [Minn. R. 7005.0100, subp. 35a]

TREA 21 13

The flare shall be operated with a flame present at all times. Flame presence shall be monitored using a thermocouple or any other equivalent device. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 21 14

Flares must be designed and operated with no visible emissions except for a period not to exceed a total of 5 minutes during any 2 consecutive hours. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 16(J)]

TREA 21 15

Compliance Requirement: Reference Method 22 shall be used to determined the compliance of flares with visible emissions provisions. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 16(J)]

TREA 21 16

The Permittee shall operate and maintain the flare in conformance with its design and in accordance with the Operation and Maintenance (O & M) Plan. The Permittee shall keep copies of the O & M Plan available onsite for use by staff and MPCA staff. [Minn. R. 7007.0800, subp. 14]

TREA 21 17

Recordkeeping: The Permittee shall maintain written records of the presence of the flame, days of operation of the flare, any malfunction of the flare, temperature measurement performance evaluations, calibration checks, adjustments and maintenance, inspections and all other information in permanent form, suitable for inspection for at least five years following the date of such measurements, maintenance, and records. [40 CFR 64.3, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 21 18

Flame Present: Monitoring Equipment: The Permittee shall install and maintain the necessary monitoring equipment for recording the presence of a flame as required by this permit. The monitoring equipment must be installed, in use, and properly maintained during operation of the monitored flare. This includes, but is not limited to, maintaining necessary parts for routine repairs. [40 CFR 64.7(b), Minn. R. 7017.0200]


TREA 21 19

Annual Calibration: The Permittee shall calibrate or replace the thermocouple or other measuring device at least once every 12 months, or at the frequency as stated in the manufacturer's specifications. The Permittee shall maintain a written record of the calibration and any action resulting from the calibration. [40 CFR 64.3, Minn. R. 7017.0200]

TREA 21 20

Annual Inspection: At least once per calendar year, or more frequently as required by the manufacturing specifications, the Permittee shall inspect the control equipment components. The Permittee shall maintain a written record of these inspections. [40 CFR 64.3, Minn. R. 7017.0200]

TREA 21 21

Corrective Actions: The Permittee shall take corrective action as soon as possible if any of the following occur:

‐ visible emissions are observed; or‐ the presence of a flame is not detected; or‐ the flare or any of its components are found during the inspections to need repair.

Corrective actions shall return the flame presence, eliminate visible emissions, and/or include completion of necessary repairs identified during the inspection, as applicable. Corrective actions include, but are not limited to, those outlined in the O & M Plan for the flare. The Permittee shall keep a record of the type and date of any corrective action taken for each flare. [40 CFR 64.7(d), Minn. R. 7017.0200]

TREA 21 22

Documentation of Need for Improved Monitoring: If the Permittee fails to achieve compliance with an emission limitation or standard for which the monitoring did not provide an indication of an excursion or exceedance while providing valid data, or the results of compliance or performance testing document a need to modify the existing flame detection method, the Permittee shall promptly notify the MPCA and, if necessary, submit a permit amendment application to address the necessary monitoring change. [40 CFR 64.7(e), Minn. R. 7017.0200]

TREA 21 23


TREA 21 24

Quality Improvement Plan (QIP) requirements. If there is an accumulation of 6 or more excursions during the six‐month reporting period, the Permittee must develop and implement a QIP in accordance with 40 CFR Section 64.8(b). The QIP must be available for inspection. [40 CFR 64.8(a), Minn. R. 7017.0200]

TREA 21 25


TREA 21 26

Following implementation of a QIP, the Administrator or the MCPA may require that the Permittee make reasonable changes to the QIP if the QIP is found to have:(1) Failed to address the cause of the control device performance problems; or(2) Failed to provide adequate procedures for correcting control device performance problems as expeditiously as practicable in accordance with good air pollution control practices for minimizing emissions. [40 CFR 64.8(d), Minn. R. 7017.0200]

TREA 21 27

Implementation of a QIP shall not excuse the Permittee from compliance with any existing emission limitation or standard, or any existing monitoring, testing, reporting or recordkeeping requirement that may apply. [40 CFR 64.8(d), Minn. R. 7017.0200]

TREA 22 16440

See subject item STRU 24 (Fermentation with CO2 Scrubber) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

TREA 22 16470

The Permittee must vent emissions from all emission units that vent to STRU 24 to a scrubber that meets the requirements of TREA 22 whenever any emission unit that vents to STRU 24 operates, and must operate and maintain a scrubber that meets the requirements of TREA 22 at all times that any emissions vent to it. The Permittee must document periods of non‐operation of the control equipment. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]


TREA 22 17430

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Volatile Organic Compounds >= 95 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 22 17450

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Acetaldehyde >= 85 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 22 17460

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Acrolein >= 32.5 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 22 17470

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Formaldehyde >= 85 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 22 17480

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Methanol >= 95 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

If the Permittee replaces or modifies a scrubber that meets the requirements of TREA 22, such control equipment must meet or exceed the control efficiency requirements of TREA 22 as well as comply with all other requirements of TREA 22, TFAC 2, STRU 24, and Permit Appendix C. Prior to making such a change, the Permi ee must apply for and obtain the appropriate permit amendment, as applicable.

Addi onally:

1. Provide justification that the VOC as mass emissions will remain below the lb/hr limits specified at STRU 24. This may include manufacturer guarantees, design calculations, or similar that establish that the scrubber is capable of controlling the emissions vented to it. The documentation must be submitted with the Annual Report;

2. Submit notification of initial startup of the scrubber and intent to conduct a performance test of the modified or replaced scrubber;

3. Any increase to the short‐term process throughput limit beyond that authorized in the "Short‐term Process Throughput" requirement at STRU 24, must be reestablished using the "Procedure to Increase Process Throughput Limit" requirement at STRU 24, up to the maximum value allowable in the requirement;

4. Within 90 days of initial startup of a modified or replaced scrubber, the Permittee must conduct a performance test for VOC as mass (lb/hr), VOC percent overall control efficiency and verification of HAP emission factors (lb/hr), following the Performance Testing language at TFAC 2 and the "Procedure to Increase Process Throughput Limit" requirements at STRU 24. The performance test must confirm the operating parameters, short‐term throughput limits, and emission limits iden fied at TREA 22 and STRU 24;

5. Emissions of VOC as mass must remain below the lb/hr limits specified at STRU 24;

6. The performance test may reset the performance test due dates and frequency at STRU 24 as identified within a No ce of Compliance le er; and

7. The Permittee must document the changes to any TREA in the Annual Report. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]17490TREA 22


TREA 22 17520

If the Permittee replaces or modifies a scrubber that meets the requirements of TREA 22, and that change results in the construction of a new stack or a change to any stack parameter identified within Appendix C of this permit, any emissions that vent to the modified or new stack must comply with all the requirements of STRU 24.

Addi onally:

1. The Permittee shall document changes to any STRU in the Annual Report. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 22 17540



TREA 22 17550

The Permittee shall operate and maintain the scrubber in accordance with the O & M Plan. The Permittee shall keep copies of the O & M Plan available onsite for use by staff and MPCA staff. [Minn. R. 7007.0800, subp. 14]

TREA 22 17570

Operating Scenario 1: Pressure Drop >= 0.5 and <= 6.0 inches of water (Pressure Drop Range Limit) whenever emissions are venting to a scrubber that meets the requirements of TREA 22, unless a new range is set pursuant to Minn. R. 7017.2025, subp. 3, as detailed below.

The Permittee shall record the pressure drop at least once every 24 hours. If the recorded pressure drop is outside the required range, the emissions during that time shall be considered uncontrolled until the pressure drop is once again within the required range. The period of time for which emissions are considered uncontrolled shall be reported as a deviation, as defined by Minn. R. 7007.0100, subp. 8a. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 22 17579

Operating Scenario 1: Water flow rate >= 44.0 gallons per minute (Minimum Water Flow Rate Limit) whenever emissions are venting to a scrubber that meets the requirements of TREA 22, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3, as detailed below.

The Permittee shall record the water flow rate at least once every 24 hours. If the recorded water flow rate is below the required limit, the emissions during that time shall be considered uncontrolled until the water flow rate is once again above the required limit. The period of time for which emissions are considered uncontrolled shall be reported as a deviation, as defined by Minn. R. 7007.0100, subp. 8a. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 22 17580

Operating Scenario 1: Scrubber Additive Material Usage >= 1.10 gallons per hour, based on a scrubber additive solution concentration of 68% ammonium bisulfite by weight (Minimum Scrubber Additive Rate Limit) whenever emissions are venting to a scrubber that meets the requirements of TREA 22, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3, as detailed below.

The Permittee shall record the additive flow rate at least once every 24 hours. If the recorded additive flow rate is below the Minimum Scrubber Additive Rate Limit, the emissions during that time shall be considered uncontrolled until the additive flow rate is above the Minimum Scrubber Additive Rate Limit. The period of time for which emissions are considered uncontrolled shall be reported as a deviation. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]


TREA 22 17581

Operating Scenario 2: Pressure Drop >= 0.0 inches of water or <= 0.0 inches of water when no emissions are venting to the scrubber. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 22 17582

Operating Scenario 2: Water Flow Rate >= 0.0 gallons per minute or <= 0.0 gallons per minute when no emissions are venting to the scrubber. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 22 17583

Operating Scenario 2: Scrubber Additive Material Usage >= 0.0 gallons per hour when no emissions are venting to the scrubber. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 22 17586

Recordkeeping of Pressure Drop, Water Flow Rate, and Scrubber Additive Flow Rate: At least once during every 24‐hour period the Permittee shall record the pressure drop across the scrubber, the water flow rate to the scrubber, and the additive flow rate to the scrubber. For each reading the Permittee shall record 1) the time and date of the recording; 2) the applicable Operating Scenario (whether or not emissions are being vented to the scrubber); and 3) whether or not the observed value was within the range for the Operating Scenario specified in this permit. Recorded values outside any range specified in this permit are considered Deviations as defined by Minn. R. 7007.0100, subp. 8a and are considered excursions as defined by 40 CFR Section 64.1. [40 CFR 64.3, Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 22 17587

Monitoring Equipment: The Permittee shall install and maintain the necessary monitoring equipment for measuring and recording pressure drop, water flow rate, and scrubber additive flow rate as required by this permit. The monitoring equipment must be installed, in use, and properly maintained when the monitored scrubber is in operation. [40 CFR 64.7(b), Minn. R. 7017.0200]

TREA 22 17589

Periodic Inspections: At least once per calendar quarter, or more frequently as required by the manufacturer recommendations, the Permittee shall inspect the control equipment external components. The Permittee shall maintain a written record of the inspection and any corrective actions taken resulting from the inspection. If inspection frequency is based upon manufacturer's specifications, then manufacturer specifications supporting the frequency must be included in the Operation and Maintenance Plan. [40 CFR 64.3, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200]

TREA 22 17593

Annual Inspections: At least once per calendar year, or more frequently if required by the manufacturer recommendations, the Permittee shall inspect the internal control equipment components not covered by the quarterly inspections. This includes, but is not limited to, components that are not subject to wear or plugging including structural components, housings, and hoods. The Permittee shall maintain a written record of the inspection and any corrective actions taken resulting from the inspection. [40 CFR 64.3, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200]

TREA 22 17595


‐ the recorded water flow rate is below the applicable Minimum Water Flow Rate Limit; or‐ the recorded pressure drop is outside the required operating range; or ‐ the recorded additive flow rate is below the applicable Minimum Scrubber Additive Rate Limit; or‐ the scrubber or any of its components are found during the inspections to need repair.

Corrective actions shall return the pressure drop, water flow rate, and/or the additive flow rate to within the permitted range, and/or include completion of necessary repairs identified during the inspection, as applicable. Corrective actions include, but are not limited to, those outlined in the O & M Plan for the scrubber. The Permittee shall keep a record of the type and date of any corrective action taken for the scrubber. [40 CFR 64.7(d), Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subp. 5, Minn. R. 7017.0200]

TREA 22 17597



TREA 22 17598


TREA 22 17605


TREA 22 17615

Documentation of Need for Improved Monitoring: If the Permittee fails to achieve compliance with an emission limitation or standard for which the monitoring did not provide an indication of an excursion or exceedance while providing valid data, or the results of compliance or performance testing document a need to modify the existing applicable pressure drop range, Minimum Water Flow Rate Limit, or Minimum Scrubber Additive Rate Limit, the Permittee shall promptly notify the MPCA and, if necessary, submit a permit amendment application to address the necessary monitoring change. [40 CFR 64.7(e), Minn. R. 7017.0200]

TREA 22 20080


TREA 22 27350

The Permittee shall maintain a record of the active chemical content of the scrubber additive material used, as determined according to the Scrubber Addi ve Ac ve Chemical Content requirement below.

The Permittee shall document any changes to the active chemical content of the scrubber additive, and shall calculate the minimum additive rate (in gallons per hour) required to meet the scrubber additive material usage limit above based on the new scrubber additive solution concentration. The Permittee shall maintain records of this calculation. [Minn. R. 7007.0800, subps. 4‐5]

TREA 22 27480

Scrubber Additive Active Chemical Content. Active chemical contents in scrubber additive materials (e.g. sodium bisulfite and/or ammonium bisulfite) shall be determined by the Safety Data Sheet (SDS) or the Material Safety Data Sheet (MSDS) provided by the supplier for each scrubber additive material used. If a material content range is given on the SDS or the MSDS, the lowest number in the range shall be used to determine the active chemical content. If information is provided in the Regulatory Section of the SDS, the lowest number in the range of that section may be used. Other alternative methods approved by the MPCA may be used to determine the active chemical contents. The Commissioner reserves the right to require the Permittee to determine the active chemical contents of any material, according to EPA or ASTM reference methods. If an EPA or ASTM reference method is used for active chemical content determination, the data obtained shall supersede the SDS or the MSDS. [Minn. R. 7007.0800, subps. 4‐5]

TREA 22 27490


TREA 22 27500



TREA 22 27505


TREA 22 27520


TREA 22 27530


Protocol for Resetting the Pressure Drop Range Limit: The Permittee shall conduct performance testing to measure the STRU 24 VOC emission rate and scrubber VOC percent overall control efficiency as required elsewhere in this permit. If the established Pressure Drop Range Limit is to be reset, the reset shall be based on the pressure drop values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated.

During the performance test, the Permittee must continuously monitor the pressure drop. The Permittee shall calculate the average pressure drop based on the average exhibited over all three compliant test runs. Downtime of 15 minutes or more is not to be included as operating time.

The established Pressure Drop Range Limit shall be reset as follows:

‐ if the 3‐hour average pressure drop recorded during the test is within the established range, it shall not be reset and the established values remain the Pressure Drop Range Limit; or

‐ if the 3‐hour average pressure drop is below the minimum value of the established range, the new minimum value shall be reset to 50% of the average pressure drop from the test. The maximum value shall be decreased by the same amount to maintain the pressure drop range; or

‐ if the 3‐hour average pressure drop is above the maximum value of the established range, the new maximum value shall be reset as the average pressure drop from the test plus 10%. The minimum value shall be increased by the same amount to maintain the pressure drop range.

The pressure drop range is equal to the maximum value (upper bound) minus the minimum value (lower bound).

Ongoing compliance with the Pressure Drop Range Limit will be determined using the same data acquisition and reduction as was used during the performance test. The new Pressure Drop Range Limit shall be effective upon receipt of the Notice of Compliance letter that approves the test results and shall be incorporated into the permit when the permit is next amended. [Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]27540TREA 22


Protocol for Resetting the Minimum Water Flow Rate Limit: The Permittee shall conduct performance testing to measure the STRU 24 VOC emission rate and scrubber VOC percent overall control efficiency as required elsewhere in this permit. If the established Minimum Water Flow Rate Limit is to be reset, the reset shall be based on the water flow rate values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated.

During the performance test, the Permittee must continuously monitor the water flow rate. The Permittee shall calculate the average water flow rate for each individual compliant test run. Downtime of 15 minutes or more is not to be included as operating time.

The established Minimum Water Flow Rate Limit shall be reset as follows:

‐ if the lowest 1‐hour average water flow rate recorded during a compliant test run is between 100% and 110% of the current limit, it shall not be reset and the established Minimum Water Flow Rate Limit remains unchanged; or

‐ if the lowest 1‐hour average water flow rate recorded during a compliant test run is lower than the current limit, the limit shall be reset as the lowest 1‐hour average water flow rate of a compliant test run; or

‐ if the lowest 1‐hour average water flow rate recorded during a compliant test run is 10% greater than the current limit, the limit shall be reset as the lowest 1‐hour average water flow rate of a compliant test run.

The new Minimum Water Flow Rate Limit shall be effective upon receipt of the Notice of Compliance letter that approves the test results and shall be incorporated into the permit when the permit is next amended. [Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]27570TREA 22

Protocol for Resetting the Minimum Scrubber Additive Rate Limit: The Permittee shall conduct performance testing to measure the STRU 24 VOC emission rate and scrubber VOC percent overall control efficiency as required elsewhere in this permit. If the established Minimum Scrubber Additive Rate Limit is to be reset, the reset shall be based on the additive material and additive flow rate values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated.

During the performance test, the Permittee must record the additive material used (active chemical(s) and solution concentration) and must continuously, or at a minimum once every 15 minutes, monitor the additive flow rate. The Permittee shall calculate the average additive flow rate for each individual compliant test run. Downtime of 15 minutes or more is not to be included as operating time.

The Minimum Scrubber Additive Rate Limit shall be reset as follows:

‐ if the additive material is not changed and the lowest 1‐hour average additive flow rate recorded during a compliant test run is between 100% and 110% of the current limit, it shall not be reset and the established Minimum Scrubber Additive Rate Limit remains unchanged; or

‐ if the additive material is not changed and the lowest 1‐hour average additive flow rate recorded during a compliant test run is lower than the current limit it shall be reset as the lowest 1‐hour average additive flow rate of a compliant test run; or

‐ if the additive material is not changed and the lowest 1‐hour average additive flow rate recorded during a compliant test run is 10% greater than the current limit it shall be reset as the lowest 1‐hour average additive flow rate of a compliant test run.


TREA 22 27573

The Permittee must apply for and obtain a major permit amendment if the Permittee wishes to deviate from the Protocol for Resetting the Pressure Drop Range Limit, the Protocol for Resetting the Minimum Water Flow Rate Limit, or the Protocol for Resetting the Minimum Scrubber Additive Rate Limit required by this permit. [Minn. R. 7007.1500, subp. 1]

TREA 22 27574


TREA 23 16440

See subject item STRU 25 (Distillation (Vent Gas) Scrubber) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

TREA 23 16470

The Permittee must vent emissions from all emission units that vent to STRU 25 to a scrubber that meets the requirements of TREA 23 whenever any emission unit that vents to STRU 25 operates, and must operate and maintain a scrubber that meets the requirements of TREA 23 at all times that any emissions vent to it. The Permittee must document periods of non‐operation of the control equipment. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 23 17430

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Volatile Organic Compounds >= 95 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 23 17450

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Acetaldehyde >= 85 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 23 17460

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Acrolein >= 32.5 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 23 17470

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Formaldehyde >= 85 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 23 17480

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for Methanol >= 95 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

‐ if the additive material is changed (either active chemical or solution concentration) the limit shall be reset as the lowest 1‐hour average additive flow rate of a compliant test run.

The new Minimum Scrubber Additive Rate Limit shall be effective upon receipt of the Notice of Compliance letter that approves the test results and shall be incorporated into the permit when the permit is next amended. [Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]27571TREA 22


TREA 23 17520

If the Permittee replaces or modifies a scrubber that meets the requirements of TREA 23, and that change results in the construction of a new stack or a change to any stack parameter identified within Appendix C of this permit, any emissions that vent to the modified or new stack must comply with all the requirements of STRU 25.

Additionally:

1. The Permittee shall document changes to any STRU in the Annual Report. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 23 17540



TREA 23 17550

The Permittee shall operate and maintain the scrubber in accordance with the O & M Plan. The Permittee shall keep copies of the O & M Plan available onsite for use by staff and MPCA staff. [Minn. R. 7007.0800, subp. 14]

If the Permittee replaces or modifies a scrubber that meets the requirements of TREA 23, such control equipment must meet or exceed the control efficiency requirements of TREA 23 as well as comply with all other requirements of TREA 23, TFAC 2, STRU 25, and Permit Appendix C. Prior to making such a change, the Permi ee must apply for and obtain the appropriate permit amendment, as applicable.

Addi onally:

1. Provide justification that the VOC as mass emissions will remain below the lb/hr limits specified at STRU 25. This may include manufacturer guarantees, design calculations, or similar that establish that the scrubber is capable of controlling the emissions vented to it. The documentation must be submitted with the Annual Report;

2. Submit notification of initial startup of the scrubber and intent to conduct a performance test of the modified or replaced scrubber;

3. Any increase to the short‐term process throughput limit beyond that authorized in the "Short‐term Process Throughput" requirement at STRU 25, must be reestablished using the "Procedure to Increase Process Throughput Limit" requirement at STRU 25, up to the maximum value allowable in the requirement;

4. Within 90 days of initial startup of a modified or replaced scrubber, the Permittee must conduct a performance test for VOC as mass (lb/hr), VOC percent overall control efficiency and verification of HAP emission factors (lb/hr), following the Performance Testing language at TFAC 2 and the "Procedure to Increase Process Throughput Limit" requirements at STRU 25. The performance test must confirm the operating parameters, short‐term throughput limits, and emission limits iden fied at TREA 23 and STRU 25;

5. Emissions of VOC as mass must remain below the lb/hr limits specified at STRU 25;

6. The performance test may reset the performance test due dates and frequency at STRU 25 as identified within a No ce of Compliance le er; and

7. The Permittee must document the changes to any TREA in the Annual Report. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]17490TREA 23


TREA 23 17570

Operating Scenario 1: Pressure Drop >= 0.1 and <= 6.0 inches of water (Pressure Drop Range Limit) whenever emissions are venting to a scrubber that meets the requirements of TREA 23, unless a new range is set pursuant to Minn. R. 7017.2025, subp. 3, as detailed below.

The Permittee shall record the pressure drop at least once every 24 hours. If the recorded pressure drop is outside the required range, the emissions during that time shall be considered uncontrolled until the pressure drop is once again within the required range. The period of time for which emissions are considered uncontrolled shall be reported as a deviation, as defined by Minn. R. 7007.0100, subp. 8a. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 23 17579

Operating Scenario 1: Water flow rate >= 32.0 gallons per minute (Minimum Water Flow Rate Limit) whenever emissions are venting to a scrubber that meets the requirements of TREA 23, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3, as detailed below.

The Permittee shall record the water flow rate at least once every 24 hours. If the recorded water flow rate is below the required limit, the emissions during that time shall be considered uncontrolled until the water flow rate is once again above the required limit. The period of time for which emissions are considered uncontrolled shall be reported as a deviation, as defined by Minn. R. 7007.0100, subp. 8a. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 23 17580

Operating Scenario 1: Scrubber Additive Material Usage >= 0.40 gallons per hour, based on a scrubber additive solution concentration of 68% ammonium bisulfite by weight (Minimum Scrubber Additive Rate Limit) whenever emissions are venting to a scrubber that meets the requirements of TREA 23, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3, as detailed below.

The Permittee shall record the additive flow rate at least once every 24 hours. If the recorded additive flow rate is below the Minimum Scrubber Additive Rate Limit, the emissions during that time shall be considered uncontrolled until the additive flow rate is above the Minimum Scrubber Additive Rate Limit. The period of time for which emissions are considered uncontrolled shall be reported as a deviation. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 23 17581

Operating Scenario 2: Pressure Drop >= 0.0 inches of water or <= 0.0 inches of water when no emissions are venting to the scrubber. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 23 17582

Operating Scenario 2: Water Flow Rate >= 0.0 gallons per minute or <= 0.0 gallons per minute when no emissions are venting to the scrubber. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 23 17583

Operating Scenario 2: Scrubber Additive Material Usage >= 0.0 gallons per hour when no emissions are venting to the scrubber. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 23 17586

Recordkeeping of Pressure Drop, Water Flow Rate, and Scrubber Additive Flow Rate: At least once during every 24‐hour period the Permittee shall record the pressure drop across the scrubber, the water flow rate to the scrubber, and the additive flow rate to the scrubber. For each reading the Permittee shall record 1) the time and date of the recording; 2) the applicable Operating Scenario (whether or not emissions are being vented to the scrubber); and 3) whether or not the observed value was within the range for the Operating Scenario specified in this permit. Recorded values outside any range specified in this permit are considered Deviations as defined by Minn. R. 7007.0100, subp. 8a and are considered excursions as defined by 40 CFR Section 64.1. [40 CFR 64.3, Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]


TREA 23 17587

Monitoring Equipment: The Permittee shall install and maintain the necessary monitoring equipment for measuring and recording pressure drop, water flow rate, and scrubber additive flow rate as required by this permit. The monitoring equipment must be installed, in use, and properly maintained when the monitored scrubber is in operation. [40 CFR 64.7(b), Minn. R. 7017.0200]

TREA 23 17589

Periodic Inspections: At least once per calendar quarter, or more frequently as required by the manufacturer recommendations, the Permittee shall inspect the control equipment external components. The Permittee shall maintain a written record of the inspection and any corrective actions taken resulting from the inspection. If inspection frequency is based upon manufacturer's specifications, then manufacturer specifications supporting the frequency must be included in the Operation and Maintenance Plan. [40 CFR 64.3, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200]

TREA 23 17593

Annual Inspections: At least once per calendar year, or more frequently if required by the manufacturer recommendations, the Permittee shall inspect the internal control equipment components not covered by the quarterly inspections. This includes, but is not limited to, components that are not subject to wear or plugging including structural components, housings, and hoods. The Permittee shall maintain a written record of the inspection and any corrective actions taken resulting from the inspection. [40 CFR 64.3, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200]

TREA 23 17595


‐ the recorded water flow rate is below the applicable Minimum Water Flow Rate Limit; or‐ the recorded pressure drop is outside the required operating range; or ‐ the recorded additive flow rate is below the applicable Minimum Scrubber Additive Rate Limit; or‐ the scrubber or any of its components are found during the inspections to need repair.

Corrective actions shall return the pressure drop, water flow rate, and/or the additive flow rate to within the permitted range, and/or include completion of necessary repairs identified during the inspection, as applicable. Corrective actions include, but are not limited to, those outlined in the O & M Plan for the scrubber. The Permittee shall keep a record of the type and date of any corrective action taken for the scrubber. [40 CFR 64.7(d), Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2(A), Minn. R. 7007.0800, subp. 5, Minn. R. 7017.0200]

TREA 23 17597


TREA 23 17598


TREA 23 17605


TREA 23 17615

Documentation of Need for Improved Monitoring: If the Permittee fails to achieve compliance with an emission limitation or standard for which the monitoring did not provide an indication of an excursion or exceedance while providing valid data, or the results of compliance or performance testing document a need to modify the existing applicable pressure drop range, Minimum Water Flow Rate Limit, or Minimum Scrubber Additive Rate Limit, the Permittee shall promptly notify the MPCA and, if necessary, submit a permit amendment application to address the necessary monitoring change. [40 CFR 64.7(e), Minn. R. 7017.0200]


TREA 23 20080


TREA 23 27350

The Permittee shall maintain a record of the active chemical content of the scrubber additive material used, as determined according to the Scrubber Addi ve Ac ve Chemical Content requirement below.

The Permittee shall document any changes to the active chemical content of the scrubber additive, and shall calculate the minimum additive rate (in gallons per hour) required to meet the scrubber additive material usage limit above based on the new scrubber additive solution concentration. The Permittee shall maintain records of this calculation. [Minn. R. 7007.0800, subps. 4‐5]

TREA 23 27480

Scrubber Additive Active Chemical Content. Active chemical contents in scrubber additive materials (e.g. sodium bisulfite and/or ammonium bisulfite) shall be determined by the Safety Data Sheet (SDS) or the Material Safety Data Sheet (MSDS) provided by the supplier for each scrubber additive material used. If a material content range is given on the SDS or the MSDS, the lowest number in the range shall be used to determine the active chemical content. If information is provided in the Regulatory Section of the SDS, the lowest number in the range of that section may be used. Other alternative methods approved by the MPCA may be used to determine the active chemical contents. The Commissioner reserves the right to require the Permittee to determine the active chemical contents of any material, according to EPA or ASTM reference methods. If an EPA or ASTM reference method is used for active chemical content determination, the data obtained shall supersede the SDS or the MSDS. [Minn. R. 7007.0800, subps. 4‐5]

TREA 23 27490


TREA 23 27500


TREA 23 27505


TREA 23 27520


TREA 23 27530



Protocol for Resetting the Pressure Drop Range Limit: The Permittee shall conduct performance testing to measure the STRU 25 VOC emission rate and scrubber VOC percent overall control efficiency as required elsewhere in this permit. If the established Pressure Drop Range Limit is to be reset, the reset shall be based on the pressure drop values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated.

During the performance test, the Permittee must continuously monitor the pressure drop. The Permittee shall calculate the average pressure drop based on the average exhibited over all three compliant test runs. Downtime of 15 minutes or more is not to be included as operating time.

The established Pressure Drop Range Limit shall be reset as follows:

‐ if the 3‐hour average pressure drop recorded during the test is within the established range, it shall not be reset and the established values remain the Pressure Drop Range Limit; or

‐ if the 3‐hour average pressure drop is below the minimum value of the established range, the new minimum value shall be reset to 50% of the average pressure drop from the test. The maximum value shall be decreased by the same amount to maintain the pressure drop range; or

‐ if the 3‐hour average pressure drop is above the maximum value of the established range, the new maximum value shall be reset as the average pressure drop from the test plus 10%. The minimum value shall be increased by the same amount to maintain the pressure drop range.

The pressure drop range is equal to the maximum value (upper bound) minus the minimum value (lower bound).

Ongoing compliance with the Pressure Drop Range Limit will be determined using the same data acquisition and reduction as was used during the performance test. The new Pressure Drop Range Limit shall be effective upon receipt of the Notice of Compliance letter that approves the test results and shall be incorporated into the permit when the permit is next amended. [Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]27540TREA 23


Protocol for Resetting the Minimum Water Flow Rate Limit: The Permittee shall conduct performance testing to measure the STRU 25 VOC emission rate and scrubber VOC percent overall control efficiency as required elsewhere in this permit. If the established Minimum Water Flow Rate Limit is to be reset, the reset shall be based on the water flow rate values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated.

During the performance test, the Permittee must continuously monitor the water flow rate. The Permittee shall calculate the average water flow rate for each individual compliant test run. Downtime of 15 minutes or more is not to be included as operating time.

The established Minimum Water Flow Rate Limit shall be reset as follows:

‐ if the lowest 1‐hour average water flow rate recorded during a compliant test run is between 100% and 110% of the current limit, it shall not be reset and the established Minimum Water Flow Rate Limit remains unchanged; or

‐ if the lowest 1‐hour average water flow rate recorded during a compliant test run is lower than the current limit, the limit shall be reset as the lowest 1‐hour average water flow rate of a compliant test run; or

‐ if the lowest 1‐hour average water flow rate recorded during a compliant test run is 10% greater than the current limit, the limit shall be reset as the lowest 1‐hour average water flow rate of a compliant test run.

The new Minimum Water Flow Rate Limit shall be effective upon receipt of the Notice of Compliance letter that approves the test results and shall be incorporated into the permit when the permit is next amended. [Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]27570TREA 23

Protocol for Resetting the Minimum Scrubber Additive Rate Limit: The Permittee shall conduct performance testing to measure the STRU 25 VOC emission rate and scrubber VOC percent overall control efficiency as required elsewhere in this permit. If the established Minimum Scrubber Additive Rate Limit is to be reset, the reset shall be based on the additive material and additive flow rate values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated.

During the performance test, the Permittee must record the additive material used (active chemical(s) and solution concentration) and must continuously, or at a minimum once every 15 minutes, monitor the additive flow rate. The Permittee shall calculate the average additive flow rate for each individual compliant test run. Downtime of 15 minutes or more is not to be included as operating time.

The Minimum Scrubber Additive Rate Limit shall be reset as follows:

‐ if the additive material is not changed and the lowest 1‐hour average additive flow rate recorded during a compliant test run is between 100% and 110% of the current limit, it shall not be reset and the established Minimum Scrubber Additive Rate Limit remains unchanged; or

‐ if the additive material is not changed and the lowest 1‐hour average additive flow rate recorded during a compliant test run is lower than the current limit it shall be reset as the lowest 1‐hour average additive flow rate of a compliant test run; or

‐ if the additive material is not changed and the lowest 1‐hour average additive flow rate recorded during a compliant test run is 10% greater than the current limit it shall be reset as the lowest 1‐hour average additive flow rate of a compliant test run.


TREA 23 27573

The Permittee must apply for and obtain a major permit amendment if the Permittee wishes to deviate from the Protocol for Resetting the Pressure Drop Range Limit, the Protocol for Resetting the Minimum Water Flow Rate Limit, or the Protocol for Resetting the Minimum Scrubber Additive Rate Limit required by this permit. [Minn. R. 7007.1500, subp. 1]

TREA 23 27574


TREA 25 11

See subject item STRU 26 (DDGS with Thermal Oxidizer) of this permit for related requirements. [Minn. R. 7007.0800, subp. 2(A)]

TREA 25 12

The Permittee must vent emissions from all emission units that vent to STRU 26 to a thermal oxidizer that meets the requirements of TREA 25 whenever any emission unit that vents to STRU 26 operates, except as otherwise authorized by this permit, and must operate and maintain a thermal oxidizer that meets the requirements of TREA 25 at all times that any emissions vent to it. The Permittee must document periods of non‐operation of the control equipment. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 25 13

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Volatile Organic Compounds >= 97 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 25 15

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Carbon Monoxide >= 97 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 25 16440

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Particulate Matter >= 62 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 25 16445

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 10 micron >= 62 percent control efficiency. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 25 16450

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for PM < 2.5 micron >= 62 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 25 16460

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Acetaldehyde >= 97 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 25 16470

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Acrolein >= 97 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 25 16990

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Formaldehyde >= 97 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 25 17000

The Permittee shall operate and maintain control equipment such that it achieves an overall control efficiency for Methanol >= 97 percent control efficiency. [Title I Condition: Avoid major source under 40 CFR 63.2]

‐ if the additive material is changed (either active chemical or solution concentration) the limit shall be reset as the lowest 1‐hour average additive flow rate of a compliant test run.

The new Minimum Scrubber Additive Rate Limit shall be effective upon receipt of the Notice of Compliance letter that approves the test results and shall be incorporated into the permit when the permit is next amended. [Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]27571TREA 23


TREA 25 17010

Operating Scenario 1: Temperature >= 1615 degrees Fahrenheit 3‐hour rolling average at the combustion chamber outlet (Minimum Temperature Limit) as determined during the 12/10/2014 performance test, whenever emissions are venting to the thermal oxidizer, unless a new limit is set pursuant to Minn. R. 7017.2025, subp. 3, as detailed below. If the recorded 3‐hour rolling average temperature is below the Minimum Temperature Limit, the emissions generated during that time shall be considered uncontrolled until the average temperature is above the Minimum Temperature Limit. This shall be reported as a deviation. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 25 17020

Operating Scenario 2: Temperature >= 0 degrees Fahrenheit or <= 0 degrees Fahrenheit when no emissions are venting to TREA 24. [40 CFR 64.3(a)(2), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7017.0200, Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 25 17030 Fuel Type: Natural gas for supplemental fuel only, by design. [Minn. R. 7005.0100, subp. 35a]

TREA 25 17040

The Permittee shall operate and maintain the thermal oxidizer in accordance with the Operation and Maintenance (O & M) Plan. The Permittee shall keep copies of the O & M Plan available onsite for use by staff and MPCA staff. [Minn. R. 7007.0800, subp. 14]

TREA 25 17060

RTO Breakdown: In the event of a breakdown, the Permittee shall stop feed into the dryer as soon as the breakdown is discovered. Dryer operation may continue as long as necessary to empty the dryer. The Permittee shall also submit the notification required by Minn. R. 7019.1000, subp. 2, if required. [Minn. R. 7007.0800, subp. 14, Minn. R. 7007.0800, subp. 2(A), Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 25 17070

Temperature Monitoring: The Permittee shall maintain and operate a thermocouple monitoring device that continuously indicates and records the combustion chamber temperature of the thermal oxidizer. The monitoring device shall have a margin of error less than the greater of +/‐ 0.75 percent of the temperature being measured or +/‐ 4.5 degrees Fahrenheit. The recording device shall also calculate the three‐hour rolling average combustion chamber temperature. Recorded values outside the range specified in this permit are considered Deviations as defined by Minn. R. 7007.0100, subp. 8a. [40 CFR 64.3(b)(4)(ii), Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 25 19550

Daily Monitoring: The Permittee shall physically verify the operation of the temperature recording device at least once each operating day to verify that it is working and recording properly. For each verification, the Permittee shall record 1) the time and date of the verification; 2) the applicable Operating Scenario (whether or not emissions are being vented to the RTO); and 3) whether or not the temperature recording device is working and recording properly. [40 CFR 64.3(b), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.subps. 4‐5, Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 25 19560

Monitoring Equipment: The Permittee shall install and maintain thermocouples to conduct temperature monitoring required by this permit. The monitoring equipment must be installed, in use, and properly maintained whenever operation of the monitored control equipment is required. [40 CFR 64.7(b), Minn. R. 7017.0200]

TREA 25 19570

The Permittee shall maintain a continuous hard copy readout or computer disk file of the temperature readings and calculated three‐hour rolling average temperatures for the combustion chamber. [40 CFR 64.9(b), Minn. R. 7017.0200, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]

TREA 25 19580

Annual Calibration: The Permittee shall calibrate the temperature monitor at least once every 12 months and shall maintain a written record of the calibration and any action resulting from the calibration. [40 CFR 64.3, Minn. R. 7017.0200]

TREA 25 19581

Quarterly Inspections: At least once per calendar quarter, the Permittee shall inspect the control equipment internal and external system components, including but not limited to the refractory, heat exchanger, and electrical systems. The Permittee shall maintain a written record of the inspection and any corrective actions taken resulting from the inspection. [40 CFR 64.3, Minn. R. 7017.0200]


TREA 25 19582

Annual Inspection: At least once per calendar year, the Permittee shall conduct an internal inspection of the control device that includes all operating systems of the control device. The Permittee shall maintain a written record of the inspection and any action resulting from the inspection. [40 CFR 64.3, Minn. R. 7017.0200]

TREA 25 19583

Corrective Actions: If the temperature is below the minimum specified by this permit or if the thermal oxidizer or any of its components are found during the inspections to need repair, the Permittee shall take corrective action as soon as possible. Corrective actions shall return the temperature to at least the permitted minimum and/or include completion of necessary repairs identified during the inspection, as applicable. Corrective actions include, but are not limited to, those outlined in the O & M Plan for the thermal oxidizer. The Permittee shall keep a record of the type and date of any corrective action taken. [40 CFR 64.7(d), Minn. R. 7017.0200]

TREA 25 19584


TREA 25 19585

Documentation of Need for Improved Monitoring: If the Permittee fails to achieve compliance with an emission limitation or standard for which the monitoring did not provide an indication of an excursion or exceedance while providing valid data, or the results of compliance or performance testing document a need to modify the existing Minimum Temperature Limit, the Permittee shall promptly notify the MPCA and, if necessary, submit a permit amendment application to address the necessary monitoring change. [40 CFR 64.7(e), Minn. R. 7017.0200]

TREA 25 19586


TREA 25 19587

Protocol for Resetting the Minimum Temperature Limit: The Permittee shall conduct performance testing to measure the STRU 26 PM/PM‐10/PM‐2.5 emission rate, VOC emission rate, CO emission rate, and thermal oxidizer VOC percent overall control efficiency as required elsewhere in this permit. If the Minimum Temperature Limit is to be reset, the reset shall be based on the average temperature values recorded during the most recent MPCA‐approved performance test where compliance was demonstrated.

During the performance test, the Permittee must continuously monitor the temperature in the combustion chamber. The Permittee shall calculate the average temperature from the combustion chamber by reducing the temperature data to an average temperature based on the average exhibited over all three compliant test runs. Downtime of 15 minutes or more is not to be included as operating time.

The Minimum Temperature Limit shall be reset as follows:

‐ if the 3‐hour average temperature recorded during the test is within 25 deg F of the limit, it shall not be reset and the established Minimum Temperature Limit remains unchanged; or‐ if the 3‐hour average temperature is more than 25 deg F greater or less than the established limit, it shall be reset as the average temperature of the performance test. Ongoing compliance with the temperature limit will be determined using the same data acquisition and reduction as was used during the performance test.

The new Minimum Temperature Limit determined using this Protocol shall be effective upon receipt of the Notice of Compliance letter that approves the test results and shall be incorporated into the permit when the permit is next amended. [Minn. R. 7017.2025, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000, Title I Condition: Avoid major source under 40 CFR 63.2]


TREA 25 20080

The Permittee must apply for and obtain a major permit amendment if the Permittee wishes to deviate from the Protocol for Resetting the Minimum Temperature Limit required by this permit. [Minn. R. 7007.1500, subp. 1]

TREA 25 20081


TREA 39 16440


TREA 39 16445

The Permittee shall operate and maintain control equipment such that it achieves a control efficiency for PM < 10 micron >= 93 percent control efficiency. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 39 16450


TREA 39 16460


TREA 39 16465


TREA 39 16470

The Permittee shall vent emissions from EQUI 56 (DDGS Cooler) to a fabric filter meeting the requirements of TREA 39 whenever EQUI 56 operates, and operate and maintain a fabric filter that meets the requirements of TREA 39 at all times that any emissions are vented to it. The Permittee shall document periods of non‐operation of the control equipment. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 39 17110

If the Permittee replaces TREA 39, the replacement control must meet or exceed the control efficiency requirements of TREA 39 as well as comply with all other requirements of TREA 39. Prior to making such a change, the Permi ee shall apply for and obtain the appropriate permit amendment, as applicable.

If no amendment is needed for the replacement, the Permittee shall submit an electronic notice to the Agency using Form CR‐05. The notice must be received by the Agency seven working days prior to the commencement/start of replacement. [Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 39 17120



TREA 39 17130

Daily Inspections: The Permittee shall do the following, once every 24 hours: Read and record the pressure drop across the fabric filter and whether or not the recorded pressure drop was within the range specified in this permit. [40 CFR 64.3, Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.0200, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 39 17140

Recordkeeping of Visible Emissions and Pressure Drop: At least once during every 24‐hour period, the Permittee shall record 1) the pressure drop across the fabric filter, 2) the time and date of the recording, 3) the applicable Operating Scenario (whether or not emissions are being vented to the fabric filter) and 4) whether or not the pressure drop recording is within the indicator range for the Operating Scenario specified in this permit. Recorded values outside the range specified in this permit are considered deviations as defined by Minn. R. 7007.0100, subp. 8a and are considered excursions as defined by 40 CFR 64.1. [40 CFR 64.3, Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M), Minn. R. 7007.0800, subp. 11, Minn. R. 7007.0800, subps. 1‐2, Minn. R. 7007.0800, subps. 4‐5, Minn. R. 7009.0010‐7009.0090, Minn. R. 7017.0200, Minn. Stat. 116.07, subd. 4a, Minn. Stat. 116.07, subd. 9, Title I Condition: Avoid major source under 40 CFR 52.21(b)(1)(i) and Minn. R. 7007.3000]

TREA 39 17150


TREA 39 17160

The Permittee shall calibrate the pressure gauge at least once every 12 months and shall maintain a written record of any action resulting from the calibration. [40 CFR 64.3, Minn. R. 7017.0200]

TREA 39 17170


TREA 39 17180


‐ the recorded pressure drop is outside the required operating range; or‐ the fabric filter or any of its components are found during the inspections to need repair.

Corrective actions shall return the pressure drop to within the permitted range and/or include completion of necessary repairs identified during the inspection, as applicable. Corrective actions include, but are not limited to, those outlined in the O & M Plan for the fabric filter. The Permittee shall keep a record of the type and date of any corrective action taken for each filter. [40 CFR 64.7(d), Minn. R. 7017.0200]

TREA 39 17190


TREA 39 17200


TREA 39 17270


Green Plains Otter Tail LLC Permit No. 11100077‐101 Technical Support Document Attachment 3 4/20/2018 PM10 Modeling Results Documents (Scenario 1)

www.pca.state.mn.us • 651-296-6300 • 800-657-3864 • Use your preferred relay service • Available in alternative formats aq2-48 • 10/30/17 Page 1 of 9

AQDM-06 Air Quality Dispersion Modeling (AQDM) results form

(Previously AQDMR-01)

Doc Type: Air Dispersion Modeling

Acronym information on page 7

Instructions: Permit applicants required to conduct air dispersion modeling should submit two paper copies of the completed Air Quality Dispersion Modeling results form (AQDM-06) and all accompanying files to:

Air Quality Permit Document Coordinator Minnesota Pollution Control Agency 520 Lafayette Road North St. Paul, MN 55155-4194

Applicants may also submit an electronic version via email, in addition to the two paper copies. This is highly recommended. Please note that all assumptions made in the air dispersion modeling analysis could result in air permit requirements.

Electronic copies of the forms and accompanying files should be emailed to: [email protected]. Note: The air modeling e-Service may not be used to submit air modeling results.

Facility information

Tempo AI ID number: 97465 AQ facility/permit ID number: 11100077 Today’s date (mm/dd/yyyy): 04/18/2018

Three-letter modeling facility ID (ex., XEK = Xcel Energy Allen S. King, MEC = Mankato Energy Center, etc.): GPO

Facility name: Green Plains Otter Tail LLC

Facility street address: 24096 170th Avenue

City: Fergus Falls County: Otter Tail Zip code: 56537 State: MN

Facility contact: Brett Jacobs Report prepared by: Aaron Aamold

Facility contact phone: (218) 998-4301 Preparer phone: (952) 832-2959

Facility contact email address: [email protected] Preparer email address: [email protected]

*UTM coordinates of facility (NAD83, zone 15 extended only): x = 259,001.23 m East, y = 5,133,670.33 m North

*This should be the central location of the facility/source.

These results are associated with (check all that apply):

AERA or Dispersion/Deposition modeling for air toxics

Environmental assessment worksheet

Environmental impact statement

Modeling information request

Modeling Impacts from animal feedlots

Siting an air monitoring station

Siting a meteorological station

Permit condition

Permit modification

Prevention of significant deterioration

Screening modeling

Special project

State implementation plan

Project description (50 words or less)

Modeling at Reissuance: The Permittee shall submit an assessment with reissuance application (due as stated elsewhere in this permit) that addresses any changes made during the permit term that did not require a permit amendment but that affected any modeled parameter or emission rate (including adding sources beyond those documented in Appendix III) and were not assessed in a later modeling submittal.


Files to accompany modeling results

Include the following files with the completed modeling report form. Use checkbox to indicate that all applicable files are included.

1. AERMOD input files (*.inp, *.adi, *.ami) AERMOD output files (*.out, *.ado, *.amo) AERMOD plot files (*.plt) AERMOD post files (*.pst) (If applicable) AERMOD event files (*.evi, *.evo) (If applicable) AERMOD miscellaneous/other files (MAXDCONT, .DAT, .emi, etc.) (If applicable)

2. AERMET files: *.sfc *.pfl

3. BPIP-PRIME files: Input (*.bpi) Output (*.bpo, *.sum) (If applicable)

4. AERMAP files: Terrain (*.dem(s), *.tif [NED files]), Input (*.ami), Output (*.rou, *.sou, etc.) (If applicable)

5. Background data files: Background concentrations for applicable pollutants (seasonal, monthly, daily, hourly, etc.) (If applicable)

6. Modeling results: Figures (*.jpeg, *.pdf), GIS Maps (*.shp)

7. AQDM-02 spreadsheet: (Provide the final spreadsheet [i.e., AQDM-02] and indicate/highlight changes.)

8. Paved roads results: (If applicable)

9. SIL analysis and results: (If applicable)

10. Hourly O3 file: (If applicable)

11. AERA forms: (If applicable)

12. Other files and supporting documents (paved roads fugitive dust modeling output files, etc.):

Section 1. Modeling protocol

1. The Air Dispersion Modeling presented in this report is based on a protocol that has been:

Approved Conditionally approved *MPCA approval date (mm/dd/yyyy): 04/12/2018

*This is the date given on AQDM-04 form

2. Does this modeling submittal completely follow the approved protocol? Yes No

If yes, proceed to Section 3.

If no, proceed to Section 2.

Section 2. Changes to approved/conditionally approved modeling protocol

Table 1: Protocol changes (Please indicate which sections in the approved/conditionally approved protocol have been changed.)

Modeling protocol by sections

Section name Change/No change Modeling purpose No Change Terrain No Change Buildings No Change Model selection and options No Change Point sources No Change Volume sources Change Area sources No Change Area source coordinates No Change Paved roads fugitive dust No Change Receptors No Change Meteorological data No Change Area of impact analysis No Change Background values No Change Nearby sources No Change Pollutant based considerations No Change Attachments No Change AERA forms No Change


Section 2.1: Detailed changes to modeling protocol

Please provide specific information corresponding to those sections in Table 1 where changes are indicated.

Modeling purpose

MPCA approved change: Yes No Date (mm/dd/yyyy):

Describe changes:

Terrain


Describe changes:

Buildings


Describe changes:

Model selection and options


Describe changes:

Point sources


Describe changes:

Volume sources

MPCA approved change: Yes No Date (mm/dd/yyyy): 4/12/2018

Describe changes:

The characterization of fugitive emissions from grain receiving (FUGI 10/FS001), DDGS loadout (FUGI 14/FS002), and DDGS storage (FUGI 12/FS003) have been changed to incorporate MPCA's comments in the conditionally approved modeling protocol. The sources have been set up in the model based on the dimemsions of the door openings in the building where the emissions are generated with the release height set to one-half the height of the door opening.

Area sources


Describe changes:

Area source coordinates


Describe changes:


Paved roads fugitive dust


Describe changes:

Receptors


Describe changes:

Meteorological data


Describe changes:

Area of impact analysis


Describe changes:

Background values


Describe changes:

Nearby sources


Describe changes:

Pollutant based considerations


Describe changes:

Attachments


Describe changes:

AERA forms


Describe changes:


Section 3. Paved roads fugitive dust (Optional)

Facilities that have indicated in their e-Services submittal the exclusion of paved roads in the air dispersion modeling should provide the results of that modeling in Table 1. Results should not include fugitive dust from paved roads.

Table 1: Model results for paved roads fugitive dust exemption policy. (See tables 2 and 3 for categories and requirements)

Averaging period

NAAQS (μg/m3)

Total modeled NAAQS concentration (includes Background and Nearby Sources) (ug/m3) % of NAAQS

PSD Class II increments (μg/m3)

Modeled class II increment impact concentrations (μg/m3)

% of Class II increments

PM10 24-hour 150 0.00% 30 0.00%

Annual - - - 17 0.00%

PM2.5 24-hour 35 0.00% 9 0.00%

Annual 12 0.00% 4 0.00%

Table 2: NAAQS PSD Class II increments

NAAQS/MAAQS result(s) w/ background and nearby sources (%) Cat. 1 Cat. 2 Cat. 3

PSD Class II result(s) (%) Cat. 1 Cat. 2 Cat. 3

PM10 !Undefined Bookmark, TEXT190

# < 60% 60% < # < 95% 95% < # 0.00% # < 35% 35% < # < 75% 75% < #

PM2.5 0.00% # < 80% 80% < # < 95% 95% < # 0.00% # < 40% 40% < # < 80% 80% < #

Table 3:

Cat 1: Paved road fugitive emissions not required to be modeled, and no paved road fugitive dust permit conditions. Requirements in Minn. R. 7011.150 apply.

Cat 2: Paved road fugitive emissions not required to be modeled, with paved road fugitive dust permit conditions determined by levels of traffic at the facility.

Cat 3: Paved road fugitive emissions are required to be modeled, with site-specific paved road fugitive dust permit conditions. Re-modeling and/or addition of paved road fugitive emissions source group required.

Section 4. Modeling results

Table 2: Pollutants and averaging periods (Check all the boxes for each pollutant and averaging period(s) modeled.)

Pollutant Averaging period Standard

Increment SIL NAAQS MAAQS

CO 1-hr

8-hr

Lead Rolling 3 mo. Avg

Quarterly Avg

NO2 1-hr

Annual

SO2

1-hr

3-hr

24-hr

Annual

PM10 24-hr

Annual - -

PM2.5 24-hr

Annual


Table 3: NAAQS/MAAQS modeling results (Enter modeling results along with the percent of standard.)

Pollutant Averaging period

NAAQS standard (ug/m3)

MAAQS standard (ug/m3)

Total modeled concentration (includes background and nearby sources) (ug/m3)

Percent of standard (%)

NAAQS MAAQS

CO 1-hr 40,071.5 40,071.5

8-hr 10,304.1 10,304.1

Lead Rolling 3 mo. Avg 0.15 0.15

NO2 1-hr 188.0 188.0

Annual 99.7 99.7

SO2

1-hr 196.4 196.4

3-hr 1309.3 1309.3

24-hr 366.6 366.6

Annual 78.6 78.6

PM10 24-hr 150.0 150.0 142 94.7 94.7

PM2.5 24-hr 35.0 35.0

Annual 12.0 12.0

Table 4: Increment modeling results (Provide the increment modeling results along with the percent of standard.)

Pollutant Averaging period

Class II increment (ug/m3)

Total modeled concentration (includes other increment sources) (ug/m3)


NO2 1-hr - - -

Annual 25

SO2

1-hr - - -

3-hr 512

24-hr 91

Annual 20

PM10 24-hr 30

Annual 17

PM2.5 24-hr 9

Annual 4

Table 5: SIL modeling results (Provide the SIL modeling results along with the percent of standard.)

Pollutant Averaging period SIL (ug/m3)

Total modeled concentration (ug/m3)


NO2 1-hr 7.52

Annual 1

SO2

1-hr 7.86

3-hr 25

24-hr 5

Annual 1

PM10 24-hr 5 138.5 2770

Annual 1 --- ---

PM2.5 24-hr 1.2

Annual 0.3

CO 1-hr 2000

8-hr 500


Section 5. Discussion Enter any discussion or comments on the information provided in this form (this can be used as a substitute for a written report):

In the 'Comments on Other Sections' section of the Approval of Modeling Protocol by Permit Engineer, the following are listed as potential permit limits based on modeling:

Indoor grain receiving (EQUI 20/EU001, EQUI 23/EU004, STRU 7/SV001 and FUGI 10/FS001)

- Daily grain received in receiving pits limited to 7,250 tons per day (includes temporary storage reclaim trucks).

- Number of straight trucks limited to 14 trucks per day.

- December through August operating hours limited to 7 AM to 7 PM, Monday - Friday.

- September through November operating hours limited to 7 AM to 7 PM, Monday - Saturday.

Temporary storage pile operations (FUGI 11/FS007)

- Grain received outdoors limited to hopper trucks only.

- Daily grain received outdoors limited to 2,800 tons per day.

- The Permittee will be required to operate and monitor the mineral oil application system during outdoor grain receiving operations.

- Outdoor grain receiving and temporary storage pile filling operating months limited to July through November. July through August operating hours limited to 7 AM to 7 PM, Monday - Friday, September through November operating hours limited to 7 AM to 7 PM, Monday - Saturday.

- Daily grain reclaimed from temporary storage pile limited to 2,520 tons per day.

- Temporary storage pile reclaim operations will be limited to March through June, 7 AM to 7 PM, Monday - Friday.

- Oval temporary storage pile must remain at least 2/3 covered (only 1/3 of the surface area may be exposed at any time).

- The Permittee has stated that grain silos #4 and #5 (which have not yet been constructed) will not be operated simultaneously with the temporary storage pile (FUGI 11/FS007). A permit condition will be added prohibitting operation of silos #4 and #5 while the temporary storage pile is in place.

DDGS Loadout Operations (STRU 23/SV011 and FUGI 14/FS002)

- DDGS loadout operating hours limited to 7 AM to 5 PM, Monday - Friday.

The following operational constraints that are listed above appear to be inadvertantly carried over from previous modeling protocol submittals and are not applicable to the modeling demonstration summarized in this report:

- Daily grain received outdoors limited to 2,800 tons per day (100,000 BU/day).

Emissions from receiving at the temporary storage pile are based on 7,280 ton/day (260,000 BU/day) grain received.

- Daily grain reclaimed from temporary storage pile limited to 2,520 tons per day (90,000 BU/day).

Emissions from reclaiming the temporary storage pile are based on 3,080 ton/day (110,000 BU/day) grain reclaimed.

- Oval temporary storage pile must remain at least 2/3 covered (only 1/3 of the surface area may be exposed at any time).

Wind erosion emissions are based on the entire pile area and are included in the model for all hours of the year so no restriction on exposed area is warranted.

In the 'Comments on Approvable-Status' section of the Approval of Modeling Protocol by Permit Engineer, the comment states 'The Permittee will need to submit a supplement to the reissuance application to incorporate assumptions relied upon in the modeling.' A supplement to the reissuance application will be be provided under separate cover to address changes and additions to the original application resulting from the modeling protocol development process. The supplement will include changes to affected application forms and incorporation of any proposed operational constraints not currently included in the application.

Modeling input files for the nearby source, Otter Tail Power Company, are included in Attachment B. The modeling input files were provided by Jim Sullivan, MPCA, on March 29, 2017. As requested in the protocol approval form, the modeling inputs for this facility are also summarized in tabular format.


Figures illustrating the facility layout and the results of the SIL and NAAQS analyses are provided in the Figures section. The PTE calculations with AQDM-02 forms and supporting modeling files are also attached.

Figures:

Figure 1 - Facility Layout

Figure 2 - 24-Hour PM10 SIL Analysis Results

Figure 3 - 24-Hour PM10 NAAQS Analysis Results

Attachments:

Attachment A - PTE Calculations with AQDM-02 forms (electronic)

Attachment B - Supporting Modeling Files (electronic)

Section 6. Modeling results figures/maps Insert a figure or map showing the facility emission sources, receptors, and the location of the modeled maximum concentration(s) for each applicable pollutant, corresponding averaging periods, and operating scenarios.

Figures 1-3 illustrating the facility layout and the results of the SIL and NAAQS analyses are provided in the Figures section.


Acronyms

AERA

AERMAP

Air Emissions Risk Analysis

AERMOD Terrain Preprocessor

AERMET AERMOD Meteorological Preprocessor

AERMOD AMS/EPA Regulatory Model

AQ

AQDM

AQDMR-01

Air Quality

Air Quality Dispersion Modeling

Previous Modeling Results Form

BPIP-PRIME Building Profile Input Program for PRIME

CO Carbon Monoxide

EPA U.S. Environmental Protection Agency

FAC 3-letter facility ID

MAAQS Minnesota State Ambient Air Quality Standard

MPCA Minnesota Pollution Control Agency

NAAQS National Ambient Air Quality Standard

NO2 Nitrogen Dioxide

OU Operable Unit

Pb Lead

PM10 Particulate Matter less than 10 um in size

PM2.5 Particulate Matter less than 2.5 um in size

PRIME Plume Rise Model Enhancements

PSD Prevention of Significant Deterioration Program

SIL Significant Impact Level

SO2 Sulfur Dioxide

SIP State Implementation Plan

SMS Standardized Mobile Source

μg/m3 Micrograms per cubic meter (μg/m3)

UTM Universal Transverse Mercator

Figures

Figure 1

Facility Layout

EEE

EEE

EE

E EEE

E

E

EE

GPOSV040Not Modeled

GPOSV039Not Modeled

GPOSV038GPOSV037

GPOSV028

GPOSV023

GPOSV036Not Modeled

GPOSV022

GPOSV014GPOSV013

GPOSV012

GPOSV011

GPOSV008

GPOSV020Not Modeled GPOSV001

GPOSV034-35Not Modeled

Currently operatedas a single pile

GPOFS003 GPOFS001GPOFS002

Barr Footer: ArcGIS 10.4.1, 2018-04-16 12:35 File: I:\Client\Green_Plains\Otter_Tail\Work_Orders\2017_TV_Reissuance\Maps\Report_Figures\Figure_1_Facility_Layout_20180416.mxd User: aga

Facility LayoutPart 70 Permit Application

AQ Facility ID No: 11100077Green Plains Otter Tail, LLC

Fergus Falls, MNFIGURE 1

0 180

Meters

!;N

E Point SourcesS Volume Sources

Pile Area SourcesBuildingsAmbient Air Boundary

Figure 2

24-Hour PM10 SIL Analysis Results

!!!!!!!!!!!!!!!!!!!!!!!! !! !!! !!! !!!! !!!!! !!!!!! !!!!!!! !!!!!!!! !!!!!!!!! !!!!!!!!!! !!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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PTE Calculations with AQDM-02 forms (electronic)

Attachment B

Supporting Modeling Files (electronic)

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Barr Footer: ArcGIS 10.6, 2018-09-28 13:39 File: I:\Client\Green_Plains\Otter_Tail\Work_Orders\2017_TV_Reissuance\Maps\2018_Silo_Update\Figure_2_PM10_24hr_SIL_20180928.mxd User: aga

PM10 24-hour SIL ResultsPart 70 Permit Application



0 2

Kilometers

!;N


! 0 - 5! 5 - 40! 40 - 100! 100 - 138

_̂ Maximum Concentration


Maximum Modeled Concentration = 137.6 µg/m3

PM10 24-hour SIL = 5 µg/m3

Bin 1 and 2 (SV036 and SV037)Emissions Are Included

Figure 3

24-Hour PM10 NAAQS Analysis Results

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Barr Footer: ArcGIS 10.6, 2018-09-28 13:53 File: I:\Client\Green_Plains\Otter_Tail\Work_Orders\2017_TV_Reissuance\Maps\2018_Silo_Update\Figure_3_PM10_24hr_NAAQS_20180928.mxd User: aga

PM10 24-hour NAAQS ResultsPart 70 Permit Application



0 0.6

Kilometers

!;N


! 45 - 60! 60 - 80! 80 - 100! 100 - 126

_̂ Maximum Concentration


Maximum Modeled Concentration = 126 µg/m3

Includes Backgroundof 42 µg/m3

PM10 24-hour NAAQS = 150 µg/m3

Bin 1 and 2 (SV036 and SV037)Emissions Are Included

Green Plains Otter Tail LLC Permit No. 11100077‐101 Technical Support Document Attachment 5 CAM Plan

Green Plains Otter Tail, LLC Page 1 of 3

Compliance Assurance Monitoring Plan for Green Plains Otter Tail, LLC Facility located in Fergus Falls, Minnesota

TREA7/CE001 – Grain Receiving Baghouse

I. Background

A. Emissions UnitDescription: Corn Dump Pit/Auger 1 (EQUI20/EU001)

Corn Conveyor 1 (EQUI21/EU002) Corn Elevator 1 (EQUI22/EU003) Corn Dump Pit/Auger 2 (EQUI23/EU004) Corn Conveyor 2 (EQUI24/EU005) Corn Elevator 2 (EQUI25/EU006) Transfer Conveyor (EQUI26/EU007) Silo #3 Conveyor (EQUI6/EU056) Silo #4 Conveyor (EQUI11/EU061) Silo #5 Conveyor (EQUI14/EU064)

Facility: Green Plains Otter Tail, LLC Fergus Falls, Minnesota

B. Applicable Regulation, Emission Limit, and Monitoring RequirementsRegulation No.: Air Emission Permit # 11100077-004 PM10 Emission Limit or Standard: 3.17 lb/hr PM2.5 Emission Limit or Standard: 3.17 lb/hr Current Monitoring Requirements: Visible Emissions/Pressure Drop

A. Control TechnologyFabric Filter Baghouse

II. Grain Receiving Baghouse (TREA7/CE001) Monitoring Approach

A. IndicatorVisible emissions/pressure drop will be used as the performance indicator.

B. Measurement ApproachThe key elements of the monitoring approach, including the indicators to bemonitored, indicator ranges, and performance criteria are presented in Table 1.

Table 1. Monitoring Approach

I. Indicator Visible emissions/pressure drop.

Measurement Approach

Visible emissions or pressure drop will be monitored and recorded at least once each day of operation.


II. Indicator Range No visible emissions or a pressure drop within the range set by the most recent MPCA-approved performance test shall be maintained during operation.

Corrective Action Each excursion triggers an inspection, corrective action, and a reporting requirement.

QIP Threshold An accumulation of excursions outside the indicator range of six or more for a reporting period excluding periods of startup, shutdown and malfunction.

III. Performance Criteria

A. DataRepresentativeness

Pressure drop is measured across the system

B. Verification ofOperational Status

Not applicable

C. QA/QC Practicesand Criteria

Calibrate, maintain, and operate instrumentation in accordance with manufacturer’s recommendation.

D. MonitoringFrequency

Visible emissions observation or the pressure drop will be recorded a minimum of once per day during operations.

Data Collection Procedures

The pressure drop will be recorded electronically or manually.

Averaging period Not applicable. E. Record Keeping Maintain for a period of 2 years records of electronic media

and corrective actions taken in response to excursions. F. Reporting Number, duration, and cause of any excursion and the

corrective action taken.

Frequency Semiannually.

III. Justification

A. BackgroundPM emissions from the grain receiving and handling equipment are controlled by theGrain Receiving Baghouse.

B. Rationale for Selection of Performance IndicatorBaghouses are standard PM emission controls from grain processing operationcreating particulate emissions and are typically cited as best available controltechnology (BACT) for such applications. Baghouses operate by collectingparticulate on porous fabric bags, thus resulting in a pressure differential across thesystem. The gas stream is passed through the fabric which results in pressure; toomuch pressure indicates a possible plugging of the system and too little indicatespossible bag breakage. Visible emissions also indicate potential issues with theperformance of the baghouse. Therefore, visible emissions and pressure drop are thebest indicator of baghouse performance.

C. Rationale for Selection of Indicator LevelBaghouses remove dust from a gas stream by passing the stream through a porousfabric. Particles form a porous cake on the fabric that acts as the filtration device.This porous cake is routinely removed and collected and returned to the process.


Baghouses are subject to failure if they are not properly operated and maintained. An indicator minimum pressure drop of at least 0.25 inches of water is recommended to achieve the required control efficiency. Depending on the age of the bag and the amount of cake on the bag, the operational range of the pressure drop is variable. The selected range is a representative range of operation.

The selected QIP threshold for the daily pressure drop is six excursions during a semi-annual reporting period. If the QIP threshold is exceeded during a semi-annual reporting period, a QIP will be developed and implemented.



TREA8/CE008 – Hammermill Baghouse

I. Background

A. Emissions UnitDescription:

Facility:

Scalper (EQUI27/EU008)Grinder Surge Bin (EQUI1/EU010)Hammermill 1 (EQUI29/EU011)Hammermill 2 (EQUI30/EU012)Hammermill 3 (EQUI57/EU055)Silo #3 Reclaim (EQUI166/EU057)Silo #4 Reclaim (EQUI167/EU062)Silo #5 Reclaim (EQUI168/EU065)Silo #1 and Silo #2 Reclaim (EQUI114/EU009)Corn Elevator 3 (EQUI115)Hammermill Conveyor 1 (EQUI119)Hammermill Conveyor 2 (EQUI120)Hammermill Conveyor 3 (EQUI121)Flour Conveyor 1 (EQUI122)Flour Conveyor 2 (EQUI123)Flour Conveyor 3 (EQUI124)Screw Conveyor, Recycle Solids (EQUI125)Flour Elevator (EQUI126)

Green Plains Otter Tail, LLCFergus Falls, Minnesota

B. Applicable Regulation, Emission Limit, and Monitoring RequirementsRegulation No.: Air Emission Permit # 11100077-004 PM10 Emission Limit or Standard: 2.04 lb/hr Current Monitoring Requirements: Visible Emissions/Pressure Drop

C. Control TechnologyFabric Filter Baghouse


the most recent MPCA-approved performance test shall be maintained during operation.







Not applicable











II. Hammermilling Baghouse (TREA8/CE008) Monitoring Approach

A. IndicatorVisible emissions/pressure drop will be used as the performance indicator.






II. Indicator Range No visible emissions or a pressure drop within the range set by


Baghouses are subject to failure if they are not properly operated and maintained. An indicator minimum pressure drop of at least 0.25 inches of water is recommended to achieve the required control efficiency. Depending on the age of the bag and the amount of cake on the bag, the operational range of the pressure drop is variable. The selected range is a representative range of operation.


III. Justification

A. BackgroundPM and PM10 emissions from the hammermilling equipment are controlled by theHammermill Baghouse.

B. Rationale for Selection of Performance IndicatorBaghouses are standard PM and PM10 emission controls from hammermillingoperation creating particulate emissions, and they are typically cited as best availablecontrol technology (BACT) for such applications. Baghouses operate by collectingparticulate on porous fabric bags, thus resulting in a pressure differential across thesystem. The gas stream is passed through the fabric which results in pressure; toomuch pressure indicates a possible plugging of the system and too little indicatespossible bag breakage. Visible emissions also indicate potential issues with theperformance of the baghouse. Therefore, visible emissions and pressure drop are thebest indicator of baghouse performance.

C. Rationale for Selection of Indicator LevelBaghouses remove dust from a gas stream by passing the stream through a porousfabric. Particles form a porous cake on the fabric that acts as the filtration device.This porous cake is routinely removed and collected and returned to the process.



TREA21/CE026 –Loadout Flare

I. Background


Facility:

Truck Ethanol Loadout (EQUI4/EU031)Rail Ethanol Loadout (EQUI116)


B. Applicable Regulation, Emission Limit, and Monitoring RequirementsRegulation No.: Air Emission Permit # 11100077-004VOC Emission Limit or Standard: ≥ 98% Control EfficiencyCurrent Monitoring Requirements: The presence of a flare pilot flame shall be

monitored using a thermocouple or any other equivalent device to detect the presence of a flame.

C. Control TechnologyThermal Oxidization by Flaring

II. Loadout Flare (TREA21/CE026) Monitoring Approach

A. IndicatorConfirmation that a flame is present during ethanol loadout operations will be usedas the performance indicator.



I. Indicator Confirmation of the presence of a flame.

Measurement

Approach

The presence of a flame will be monitored whenever ethanol is loaded out to trucks or railcars.

II. Indicator Range The facility utilizes automatic systems and safety devices to verify that a flame is present to ensure the control of emissions. Theconfirmation of flame presence will be the indicator and no range is required.

Corrective Action Each excursion triggers an inspection, corrective action,


and a reporting requirement.

QIP Threshold Six or more excursions (visual confirmation of no flame present) in a reporting period.



Confirmation of flame presence will be monitored and performed by a qualified operator.


Not applicable.


Calibrate, maintain, and operate any required instrumentation in accordance with manufacturer’s recommendation.

D. Monitoring Frequency Confirmation of flame presence will be conducted once per day during ethanol loadout to trucks.


The confirmation of flame presence will be recorded electronically or manually.

Averaging period Not applicable.

E. Record Keeping Maintain for a period of 2 years records of electronic media and corrective actions taken in response to excursions.

F. Reporting Number, duration, and cause of any excursion and the corrective action taken.

Frequency Semiannually, as required

III. Justification

A. BackgroundVOC emissions from Truck Ethanol Loadout (EQUI4/EU031) and Rail Ethanol Loadout (EQUI116) are controlled by the Loadout Flare.

B. Rationale for Selection of Performance IndicatorThe use of a flare at ethanol facilities is typically considered best available control technology (BACT) for ethanol loading operations. Since the vapors from the transport vessel are flammable, the presence of a flame in the flare results in combustion of the vapors and the destruction of VOC. Therefore, confirmation that a flame is present during loading operations is recommended to achieve the desired VOC control.

C. Rationale for Selection of Indicator LevelThe indicator was selected to allow a simple and effective procedure for compliance tracking purposes. When an excursion occurs corrective action will be initiated based upon the observed operating parameters. All excursions will be documented and reported.


The selected QIP threshold for flare operations is 6 excursions during the semi-annual reporting period. If the QIP threshold is exceeded in a semi-annual reporting period, a QIP will be developed and implemented.



TREA22/CE027 – CO2 (Fermentation) Scrubber

I. Background

A. Emissions UnitDescription: Yeast Tank (EQUI38/EU033)

Fermenter 1 (EQUI39/EU034) Fermenter 2 (EQUI40/EU035) Fermenter 3 (EQUI41/EU036) Fermenter 4 (EQUI42/EU037) Beerwell (EQUI43/EU038)


B. Applicable Regulation, Emission Limit, and Monitoring RequirementsRegulation No.: Air Emission Permit # 11100077-004 VOC Emission Limit or Standard: 11.28 lbs/hr

≥ 95% control efficiency Current Monitoring Requirements: Pressure Drop – Record once each day during

operation Water Flow Rate – Record once each day during operation

C. Control TechnologiesCO2 (Fermentation) Scrubber (Packed Gas Absorption Column)

II. CO2 (Fermentation) Scrubber (TREA22/CE027) Monitoring Approach

A. IndicatorWater flow rate to the scrubber will be used as an indicator.

B. Measurement ApproachThe key elements of the monitoring approach, including the indicators to be monitored, indicator ranges, and performance criteria are presented in Table 1.


I. Indicator Water Flow Rate


Water flow rate will be monitored and recorded at least once each day of operation.

II. Indicator Range An excursion is defined as a daily scrubber water flow rate


recording of less than the amount recorded during the most recent stack test.

Corrective Action Each excursion triggers an inspection of the occurrence, corrective action, and a reporting requirement.

QIP Threshold The QIP threshold is triggered when there are excursions more than 5% of the operating time in a semi-annual reporting period (January 1 to June 30, or July 1 to December 31), excluding periods of startup, shutdown and malfunction. A deviation shall be reported in the semi-annual report when the QIP threshold is triggered.



The water flow rate meter measures the inlet water flow rate to the scrubber. Water flow rates less than that recorded during the most recent stack test indicate a potential decrease in VOC removal efficiency of the scrubber.


The water flow rate meter was installed, calibrated, and is operated in accordance with manufacturer’s recommendations.


1) The water flow rate meter will be calibrated permanufacturer’s recommendations.2) The scrubber will be inspected per manufacturer’srecommendations.


The scrubber water flow rate will be measured continuously using the plant DCS system and recorded once daily.






Frequency Semiannually, as required.

III. Justification

A. BackgroundVOC emissions from the Yeast Tank (EQUI38/EU033) Fermenters(EQUI39/EU034, EQUI40/EU035, EQUI41/EU036, EQUI42/EU037) and Beerwell (EQUI43/EU038) are controlled by the CO2 (Fermentation) Scrubber. The exhaust from the scrubber is routed to atmosphere.

B. Rationale for Selection of Performance IndicatorTo comply with the applicable emission limit, a minimum water flow rate must be supplied to the scrubber to absorb a given amount of VOC in the gas stream, given the size of the tower and height of the packed bed. The liquid to gas (L/G) ratio is a key operating parameter of the scrubber. If the L/G ratio decreases below the minimum, sufficient mass transfer of the pollutant from the gas phase to the liquid phase may not occur. Results from stack testing are used as a minimum liquid flow required to maintain the proper L/G ratio at the maximum gas flow and vapor loading through the scrubber. Maintaining this minimum liquid flow, even during


periods of reduced air flow, will help ensure that the ideal L/G ratio is achieved at all times.

C. Rationale for Selection of Indicator LevelThe minimum water flow rate indicator level was chosen based on stack test results.



TREA23/CE028 – Vent Gas (Distillation) Scrubber

I. Background


Facility:

Liquefaction Tank (EQUI44/EU039)Beer Stripper (EQUI45/EU040)Side Stripper (EQUI46/EU041)Rectifier (EQUI47/EU042)Molecular Sieve (EQUI48/EU043) Evaporator (EQUI49/EU044)Centrifuge 1 (EQUI50/EU045)Centrifuge 2 (EQUI51/EU046)Centrifuge (EQUI52/EU047)Centrifuge (EQUI53/EU048)Centrate Tank (EQUI109/EU049)Slurry Tank (EQUI110)Process Condensate Tank (EQUI111)Whole Stillage Tank (EQUI112)Thin Stillage Tank (EQUI113)Syrup Tank (EQUI127)Corn Syrup Retention Tank (EQUI128)Beer Column Vent Condenser (EQUI139)Reflux Condenser (EQUI140)Reflux Vent Condenser (EQUI141)Superheater (EQUI142)Regen Preheater (EQUI143)DD&E Condensate Preheater (EQUI144)Acid Column (EQUI145)Product Condenser (EQUI146)Regen Receiver (EQUI147)Evaporator Condensate Receiver (EQUI148)Evaporator Condenser (EQUI149)Evaporator Vacuum Condenser (EQUI150)



II. Vent Gas (Distillation) Scrubber (TREA23/CE028) Monitoring Approach

A. IndicatorWater flow rate to the scrubber will be used as an indicator.

B. Measurement ApproachThe key elements of the monitoring approach, including the indicators to be monitored, indicator ranges, and performance criteria are presented in Table 1.

C. Control TechnologiesVent Gas (Distillation) Scrubber (Packed Gas Absorption Column)

B. Applicable Regulation, Emission Limit, and Monitoring RequirementsRegulation No.: Air Emission Permit # 11100077-004 VOC Emission Limit or Standard: 4.75 lbs/hr

≥ 95% control efficiency Current Monitoring Requirements: Pressure Drop – Record once each day during

operation Water Flow Rate – Record once each day during operation


I. Indicator Water Flow Rate


Water flow rate will be monitored and recorded at least once each day of operation.

II. Indicator Range An excursion is defined as a daily scrubber water flow rate recording of less than the amount recorded during the most recent stack test.

Corrective Action Each excursion triggers an inspection of the occurrence, corrective action, and a reporting requirement.

QIP Threshold The QIP threshold is triggered when there are excursions more than 5% of the operating time in a semi-annual reporting period (January 1 to June 30, or July 1 to December 31), excluding periods of startup, shutdown and malfunction. A deviation shall be reported in the semi-annual report when the QIP threshold is triggered.



The water flow rate meter measures the inlet water flow rate to the scrubber. Water flow rates less than that recorded during

the most recent stack test indicate a potential decrease in VOC removal efficiency of the scrubber.

B. Verification ofOperationa Stl atus

The water flow rate meter was installed, calibrated, and is operated in accordance with manufacturer’s recommendations.


1) The water flow rate meter will be calibrated permanufacturer’s recommendations.2) The scrubber will be inspected per manufacturer’srecommendations.


To comply with the applicable emission limit, a minimum water flow rate must be supplied to the scrubber to absorb a given amount of VOC in the gas stream, given the size of the tower and height of the packed bed. The liquid to gas (L/G) ratio is a key operating parameter of the scrubber. If the L/G ratio decreases below the minimum, sufficient mass transfer of the pollutant from the gas phase to the liquid phase may not occur. Results from stack testing are used as a minimum liquid flow required to maintain the proper L/G ratio at the maximum gas flow and vapor loading through the scrubber. Maintaining this minimum liquid flow, even during periods of reduced air flow, will help ensure that the ideal L/G ratio is achieved at all times.

C. Rationale for Selection of Indicator LevelThe minimum water flow rate indicator level was chosen based on stack test results.

III. Justification

A. BackgroundVOC emissions from the Distillation Equipment (Liquefaction Tank(EQUI44/EU039), Beer Stripper (EQUI45/EU040), Side Stripper (EQUI46/EU041), Rectifier (EQUI47/EU042), Molecular Sieve (EQUI48/EU043), Evaporator(EQUI49/EU044), Centrifuge 1 (EQUI50/EU045), Centrifuge 2 (EQUI51/EU046), Centrifuge 3 (EQUI52/EU047), Centrifuge 4 (EQUI53/EU048), Centrate Tank(EQUI109/EU049), Slurry Tank (EQUI110), Process Condensate Tank (EQUI111), Whole Stillage Tank (EQUI112), Thin Stillage Tank (EQUI113), Syrup Tank (EQUI127), Corn Syrup Retention Tank (EQUI128), Beer Column Vent Condenser (EQUI139), Reflux Condenser (EQUI140), Reflux Vent Condenser (EQUI141), Superheater (EQUI142), Regen Preheater (EQUI143), DD&E Condensate Preheater (EQUI144), Acid Column (EQUI145), Product Condenser (EQUI146), Regen Receiver (EQUI147), Evaporator Condensate Receiver (EQUI148), Evaporator Condenser (EQUI149), and Evaporator Vacuum Condenser (EQUI150)) are controlled by the Vent Gas (Distillation) Scrubber. The exhaust from the scrubber is routed to atmosphere.

B. Rationale for Selection of Performance Indicator


The scrubber water flow rate will be measured continuously using the plant DCS system and recorded once daily.






Frequency Semiannually, as required.



TREA25/CE030 – Regenerative Thermal Oxidizer

I. Background

A. Emissions UnitsDescription: DDGS Dryer (EQUI55/EU050)

DDGS Cooler (EQUI56/EU051)


B. Applicable Regulation, Emission Limit, and Monitoring RequirementsRegulation No.: Air Emission Permit # 11100077-004 VOC Emission Limit or Standard: 1.11 lb/hr CO Emission Limit or Standard: 12.91 lb/hr

≥ 97% Control Efficiency for VOC and CO Current Monitoring Requirements:

1) The Permittee shall maintain a continuous hard copy readout or computerdisk file of the temperature readings and calculated three-hour rollingaverage temperatures for the combustion chamber.

2) The Permittee shall maintain and operate a thermocouple monitoring devicethat continuously indicates and records the combustion chamber temperatureof the thermal oxidizers. The recording device shall also calculate the three-hour rolling average combustion chamber temperature.

3) At least quarterly (or more frequently if recommended by the manufacturer),the Permittee shall inspect the control equipment internal and external systemcomponents, including but not limited to the refractory, heat exchanger, andelectrical systems in accordance to the manufacturer’s recommendedprocedures. The Permittee shall maintain a written record of the inspectionand any corrective actions taken resulting from the inspection.

C. Control TechnologyRegenerative Thermal Oxidizer (TREA25/CE030)

II. Regenerative Thermal Oxidizer (TREA25/CE030) Monitoring Approach

A. IndicatorCombustion chamber temperature and internal inspection will be used as indicators.




Indicator No. 1 Indicator No. 2 I. Indicator Combustion Chamber Temperature. Work Practice/Inspection. Measurement

Approach The temperature measured in the combustion chamber by the continuous temperature monitor (thermocouple).

Inspection and maintenance of the burner to ensure structural integrity and ensure proper operation.

II. Indicator Range An excursion is defined as 3-hour rolling average temperature readings less than the average temperature established by the most recent compliance performance test.

An excursion is defined as failure to perform annual inspection or any finding that the structural integrity of the incinerator has been jeopardized and it no longer operates as designed.


Each excursion triggers an assessment of the problem, corrective action, and a reporting requirement.

QIP Threshold An accumulation of excursions below the indicator range exceeding 5 percent of operating time for a reporting period excluding periods of startup, shutdown and malfunction.

Not applicable.



The sensor is located in the incinerator combustion chamber as an integral part of the incinerator design. The minimum tolerance of the thermocouple is ±2.5 degrees C.

Not applicable.


Temperatures recorded electronically.

Inspection records.



Not applicable.

D. Monitoring Frequency The combustion temperature is measured continuously.

Internal inspection of the burner at least annually.


Record chamber temperature continuously on electronic media.

Record results of inspections.

Averaging period Three (3) hour rolling average. Not applicable. E. Record Keeping Maintain for a period of 2 years

records of electronic media and corrective actions taken in response to excursions.

Maintain for a period of 2 years records of inspections and corrective actions taken in response to excursions.

F. Reporting Number, duration, and cause of any excursion and the corrective action taken.

Number, duration, and cause of any excursion and the corrective action taken.

Frequency Semiannually. Annually.


III. Justification

A. BackgroundVOC emissions from the DDGS dryer and the DDGS cooling drum are controlled bythe thermal oxidizers.

B. Rationale for Selection of Performance IndicatorThe VOC control efficiency achieved by a thermal oxidizer is a function of thecombustion chamber temperature. It is expected that by maintaining the operatingtemperature at or above the minimum chamber temperature, the required level ofVOC control efficiency can be expected to be achieved.

The work practice of an annual inspection and tuning of the incinerator burner wasselected because an inspection verifies equipment integrity and periodic tuning willmaintain proper burner operation and efficiency.

C. Rationale for Selection of Indicator LevelThe minimum operating temperature of the thermal oxidizer is based on the averagetemperature recorded during the most recent MPCA-approved VOC performancetesting that demonstrated compliance with permit limits.



TREA39 – DDGS Cooler Baghouse

I. Background

A. Emissions Unit Description: DDGS Cooler (EQUI56) Facility: Green Plains Otter Tail, LLC

Fergus Falls, Minnesota

B. Applicable Regulation, Emission Limit, and Monitoring Requirements Regulation No.: Air Emission Permit # 11100077-004 TPM Emission Limit or Standard: 5.15 lb/hr

Note: this emission limit is the RTO (TREA25) emission limit as the DDGS cooler baghouse is routed to the RTO during normal operations.

Current Monitoring Requirements: None

C. Control Technology Fabric Filter Baghouse

II. DDGS Cooler Baghouse (TREA39) Monitoring Approach

A. Indicator Visible emissions/pressure drop will be used as the performance indicator.

B. Measurement Approach

The key elements of the monitoring approach, including the indicators to be monitored, indicator ranges, and performance criteria are presented in Table 1.





II. Indicator Range No visible emissions or a minimum pressure drop of 0.5 inches of water shall be maintained during operation.





A. Data Representativeness


B. Verification of Operational Status

Not applicable

C. QA/QC Practices and Criteria


D. Monitoring Frequency








III. Justification

A. Background Particulate emissions from the DDGS Cooler equipment are controlled by the DDGS Cooler Baghouse.

B. Rationale for Selection of Performance Indicator

Baghouses are standard PM and PM10 emission controls from the DDGS Cooler operation creating particulate emissions, and they are typically cited as best available control technology (BACT) for such applications. Baghouses operate by collecting particulate on porous fabric bags, thus resulting in a pressure differential across the system. The gas stream is passed through the fabric which results in pressure; too much pressure indicates a possible plugging of the system and too little indicates possible bag breakage. Visible emissions also indicate potential issues with the performance of the baghouse. Therefore, visible emissions and pressure drop are the best indicator of baghouse performance.

C. Rationale for Selection of Indicator Level

Baghouses remove dust from a gas stream by passing the stream through a porous fabric. Particles form a porous cake on the fabric that acts as the filtration device. This porous cake is routinely removed and collected and returned to the process. Baghouses are subject to failure if they are not properly operated and maintained. An indicator minimum pressure drop of at least 0.5 inches of water is recommended to achieve the required control efficiency. Depending on the age of the bag and the amount of cake on the bag, the operational range of the pressure drop is variable. The selected range is a representative range of operation.

Green Plains Otter Tail LLC Permit No. 11100077‐101 Technical Support Document Attachment 6 Permit Reopenings

i-enf-iii-9a · 9/24/12 · Doc Type: Compliance/Noncompliance Notification

March 4, 2013 Mr. Fred Huston Green Plains Otter Tail LLC 24096 170th Avenue Fergus Falls, MN 56537 RE: Notice of Compliance for November 13-14, 2012, Performance Test on CE030 Pursuant to Air

Emission Permit Number 11100077-004; and Test Plan Approval Letter dated September 19, 2012 Dear Mr. Huston: The Minnesota Pollution Control Agency (MPCA) staff has reviewed the final test report for the test conducted on the emission unit(s) referenced above at the Green Plains Otter Tail LLC facility (Regulated Party) located in Fergus Falls, Minnesota. The test report was submitted electronically on December 19, 2012. This notice serves as the Commissioner's written verification of compliance status of the Regulated Party pursuant to Minn. R. 7017.2020 to 7017.2025. The MPCA staff has determined that the test results demonstrate the following under test conditions:

Summary of Performance Test Results

Emission Unit Tested

Limitation Basis Pollutant and Emission Limit

Test Result Compliance

Status CE030 Title I Condition: to

avoid major source classification under

40 CFR Section 52.21 & 40 CFR Section 63.2; and

Minn. R. 7007.3000

Volatile Organic Compounds (VOC):

≤ 1.11 lbs/hour

VOC:

< 0.803 lbs/hour

Compliant

Title I Condition: to avoid major source classification under

40 CFR Section 52.21 & 40 CFR Section 63.2; and

Minn. R. 7007.3000; Minn. R. 7007.0800,

subp. 2 and 14

VOC Destruction Efficiency:

97%

VOC Destruction Efficiency:

97.2%

Compliant

Title I Condition: To avoid classification as a

major source under 40 CFR Section 52.21

and Minn. R. 7007.3000

Nitrogen Oxides (NOX):

< 11.32 lbs/hour

NOX:

3.3 lbs/hour

Compliant

Carbon Monoxide (CO):

12.91 lbs/hour

CO: 2.5 lbs/hour

Compliant

Mr. Fred Huston Page 2 March 4, 2013


Emission

Unit Tested Limitation Basis Pollutant and

Emission Limit Test Result Compliance

Status CE030 Title I Condition: To

avoid classification as a major source under

40 CFR Section 52.21 and Minn. R. 7007.3000

CO Destruction Efficiency:

97%

CO Destruction Efficiency:

97.7%

Compliant

Total Particulate Matter(A) (TPM): ≤ 5.15 lbs/hour

TPM: 3.78 lbs/hour

Compliant

PM < 10 micron(B) (PM10):

≤5.15 lbs/hour

PM10:

3.78 lbs/hour Compliant

Table References: (A) Total Particulate Matter includes filterable plus organic condensable particulate matter as determined by EPA

Method 5 and 202 (B) PM10 includes particles with an aerodynamic diameter less than or equal to a nominal ten micrometers as

determined by EPA Methods 5 and 202

The test was conducted while operating with a centrifuge feed rate of 476 gallons per minute (gpm), a syrup to dryer rate of 70.0 gpm and a 200 proof flow rate of 112.8 gpm. CE030 operated with a temperature of 1,625° Fahrenheit. These parameters are within the ranges defined in the approved test plan. In addition, please be advised of the following: 1. The following operating limit applies pursuant to Minn. R. 7017.2025, subp. 3. This limit will supersede

specific previous operating limits in the permit as stated below. The limit applies in addition to any other operating limit or requirement that already exists and does not serve to relax any other limit or requirement. Note: [The Regulated Party has a Title V Part 70 Permit (Permit); therefore, the Permit will be re-opened (under Minn. R. 7007.1600, subp. 1.D.) in order to add the new operating limit. This letter serves as the 30-day notice of the MPCA’s intent to amend the Permit. This letter also grants preliminary approval [and/or instruction] to operate at the new rate until the new amendment is issued. Final approval will be given when the Permit is amended.]

Emission Unit Operating Limit Averaging Method CE030 Temperature:

≥ 1625° F Three-Hour Rolling Average at the combustion chamber outlet

The Regulated Party may not operate an emission unit at a less stringent rate than that listed in the table above unless it conducts a performance test at an alternate rate, the MPCA staff determines compliance at that rate for the emission unit, and a Notice of Compliance with approval to operate at the new rate is received. Ongoing compliance with the operating limit will be determined using the same data acquisition and reduction as was used during the performance test. If an operating limit is exceeded, it must be

Mr. Fred Huston Page 3 March 4, 2013


reported in accordance with the deviation reporting requirements of Minn. R. 7007.0800, subp. 6(A).

2. The Emission Inventory rule, Minn. R. 7019.3000 to 7019.3100, requires the calculation of emissions

based on an established hierarchy. In the absence of Continuous Emission Monitor data meeting the requirements of Minn. R. 7019.3040, a performance test must be used. When a performance test for particulate matter, carbon monoxide, nitrogen oxides, sulfur oxides, volatile organic compounds or lead is conducted and meets the requirements of Minn. R. 7017.2001 to 7017.2060, the results must be used to calculate emissions, unless specified otherwise by Minn. R. 7019.3000 to 7019.3100. It is the Regulated Party’s responsibility to ensure the results of performance tests are accounted for in their annual emission inventory submittal. Note that the final decision to approve the emission factor for any given inventory year will be made by the Emission Inventory Coordinator.

If you have questions or comments regarding the content of this letter, please contact me at 651-757-2716. Your continued cooperation is appreciated. Sincerely, Signed by Marc Severin Marc Severin Pollution Control Specialist Land & Air Compliance Section Industrial Division MS:rrs cc: Kristin Kirchoff\Re-opening queue, MPCA AQ Notice of Compliance/Noncompliance File No. 4297


May 12, 2015 Mr. Anthony Hicks, General Manager Green Plains Otter Tail, LLC 24069 170th Avenue Fergus Falls, MN 56537 RE: Notice of Compliance for the December 10-11, 2014, Performance Test on the Thermal Oxidizer

(CE030) Pursuant to Air Emission Permit Number 11100077-004 Dear Mr. Hicks: The Minnesota Pollution Control Agency (MPCA) staff has reviewed the final test report for the test conducted on the emission unit(s) referenced above at Green Plains Otter Tail, LLC (Regulated Party) located in Fergus Falls, Minnesota. The test report was submitted electronically on January 23, 2015. This notice serves as the commissioner's written verification of compliance status of the Regulated Party pursuant to Minn. R. 7017.2020 to 7017.2025. The MPCA staff has determined that the test results demonstrate the following under test conditions:



Limitation Basis Pollutant and Emission

Limit Test

Result Compliance

Status Thermal Oxidizer (CE030)

Title I Condition: to avoid major source classification

under 40 CFR Section 52.21; To avoid major source

classification under 40 CFR Section 63.2; and Minn. R.

7007.3000

Volatile Organic Compounds: ≤ 1.11

lbs/hour using 3-hour Rolling Average

<1.11 lbs/hour

Compliant

Title I Condition: To avoid classification as a major

source under 40 CFR Section 52.21 and Minn. R.

7007.3000

Total Particulate Matter: ≤ 5.15 lbs/hour using 3-

hour Rolling Average

0.78 (A) lbs/hour

Compliant

PM < 10 micron and PM < 2.5 micron:

≤ 5.15 lbs/hour using 3-hour Rolling Average

3.79 (B) lbs/hour

Compliant

Carbon Monoxide: ≤ 12.91 lbs/hour using 3-


8.48 lbs/hour

Compliant

Nitrogen Oxides: ≤ 11.32 lbs/hour using 3-


2.66 lbs/hour

Compliant

Table References: (A) Total Particulate Matter includes filterable plus organic condensable particulate matter as determined by

EPA Methods 5 and 202 (B) PM10 includes particles with an aerodynamic diameter less than or equal to a nominal ten micrometers as

determined by EPA Methods 5 and 202

Mr. Anthony Hicks, General Manager Page 2 May 12, 2015 The test was conducted while operating with a centrifuge feed rate of 448 gallons per minute (gpm), a syrup to dryer rate of 66 gpm and a 200 proof flow rate of 108 gpm and a top rate of 112.8 gpm. CE030 operated with a temperature of 1,625° Fahrenheit. These parameters are within the ranges defined in the approved test plan. Operating limits based on these conditions are defined in Item 1 of this letter. In addition, please be advised of the following: 1. The following operating limit applies pursuant to Minn. R. 7017.2025, subp. 3 and any additional

applicable requirement. This limit will supersede specific previous operating limits in the permit as stated below. The limit applies in addition to any other operating limit or requirement that already exists and does not serve to relax any other limit or requirement. Note: This letter grants preliminary approval and/or instruction to operate at the new rate until a new amendment is issued. Final approval will be given when the Permit is amended with the limit.

Emission Unit Operating Limit Averaging Method Thermal Oxidizer (CE030)

Temperature: ≥ 1,615° F (includes a 10 degree buffer to allow for normal operating fluctuations from the tested operating temperature of 1,625° F)

3-hour Rolling Average as a 3-hour rolling average at the combustion chamber outlet

The Regulated Party may not operate an emission unit at a less stringent rate than that listed in the table above unless it conducts a performance test at an alternate rate, the MPCA staff determines compliance at that rate for the emission unit, and a Notice of Compliance with approval to operate at the new rate is received. Ongoing compliance with the operating limit will be determined using the same data acquisition and reduction as was used during the performance test. If an operating limit is exceeded, it must be reported in accordance with the deviation reporting requirements of Minn. R. 7007.0800, subp. 6(A).



Mr. Anthony Hicks, General Manager Page 3 May 12, 2015 If you have questions or comments regarding the content of this letter, please contact me at 651-757-2757. Your continued cooperation is appreciated. Sincerely, Signed by Lad Strzok for Curtis H. Stock State Program Administrator Principal Land & Air Compliance Section Industrial Division CHS:map cc: Rachel Parlin \Re-opening queue, MPCA AQ Notice of Compliance/Noncompliance File No. 4297

t-enf-iii-9a · 8/25/16

January 24, 2017 Brett Jacobs – Sr. Environmental, Health, Safety, and Security Manager Green Plains Otter Tail LLC 24096 170th Ave Fergus Falls, MN 56537‐7518 RE: Notice of Compliance for the August 24‐25, 2016, Performance Test on the Fermentation C02

Scrubber (SV026, CE027) and Distillation Vent Gas Scrubber (SV027, CE028) Pursuant to Air Emission Permit Number 11100077‐004

Dear Brett Jacobs: The Minnesota Pollution Control Agency (MPCA) staff has reviewed the final test report for the test conducted on the emission unit(s) referenced above at the Green Plains Otter Tail LLC (Regulated Party) located in Fergus Falls, Minnesota. The test report was received on September 23, 2016. This notice serves as the Commissioner's written verification of compliance status of the Regulated Party pursuant to Minn. R. 7017.2020 to 7017.2025. The MPCA staff has determined that the test results demonstrate the following under test conditions:



Limitation Basis Pollutant and Emission Limit

Test Result Compliance

Status Fermentation C02 Scrubber (SV026, CE027)

Title I Condition: to avoid major source classification under 40 CFR Section 52.21; to avoid major

source classification under 40 CFR Section 63.2; and Minn. R.

7007.3000

Volatile Organic

Compounds: ≤ 11.28 Ibs/hour

≤ 6.89 Ibs/hour

Compliant

Distillation Vent Gas Scrubber (SV027, CE028)



7007.3000

Volatile Organic


≤ 4.10 Ibs/hour

Compliant

The tests were conducted while operating at the condition in the following table.

Test

200 Proof Ethanol (gpm)

Beer Feed Rate (gpm)

Scrubber Pressure Drop (inches H2O)

Scrubber Water Flow Rate (gpm)

Additive ABS Flow Rate (gph)

Fermentation C02 Scrubber 109 680 1.82 60.4 1.2 Distillation Scrubber 105 681 0.215 35.5 0.4

Brett Jacobs – Sr. Environmental, Health, Safety, and Security Manager Page 2 January 24, 2017

Operating limits based on these conditions are defined in Item 1 of this letter. In addition, please be advised of the following: 1. The following operating limit applies pursuant to Minn. R. 7017.2025, subp. 3 and any additional

applicable requirement. This limit will supersede specific previous operating limits in the permit as stated below. Note: The Regulated Party has a Title V Part 70 Permit (Permit); therefore, the Permit will be re‐opened (under Minn. R. 7007.1600, subp. 1.D.) in order to add the new operating limit. This letter also grants preliminary approval and/or instruction to operate at the new rate until the new amendment is issued. Final approval will be given when the Permit is amended.

Emission Unit Operating Limit Averaging Method Fermentation CO2 Scrubber (SV026) (CE027)

Scrubber Water Flow Rate: ≥ 60.0 gallons per minute

Record once each day of operation

Pressure Drop: ≥ 1.0 and ≤ 6.0 inches water column


Distillation Vent Gas Scrubber (SV027) (CE028)





The Regulated Party may not operate an emission unit at a less stringent rate than that listed in the table above unless it conducts a performance test at an alternate rate, the MPCA staff determines compliance at that rate for the emission unit, and a Notice of Compliance with approval to operate at the new rate is received. If an operating limit is exceeded, it must be reported in accordance with the deviation reporting requirements of Minn. R. 7007.0800, subp. 6(A).



Brett Jacobs – Sr. Environmental, Health, Safety, and Security Manager Page 3 January 24, 2017

If you have questions or comments regarding the content of this letter, please contact me at 651‐757‐2757. Sincerely,

Curtis H. Stock This document has been electronically signed.

Curtis H. Stock State Program Administrator Principal Land & Air Compliance Section Industrial Division CHS:lm cc: Activity ID REP20160006 @ AI ID 97465

t-enf-iii-9a · 8/25/16

June 12, 2017 Brett Jacobs – Sr. Environmental, Health, Safety, and Security Manager Green Plains Otter Tail LLC 24096 170th Ave Fergus Falls, MN 56537‐7518 RE: Notice of Compliance for the March 1‐2, 2017, Performance Test on the Fermentation C02

Scrubber (SV026, CE027) and Distillation Vent Gas Scrubber (SV027, CE028) Pursuant to Air Emission Permit Number 11100077‐004

Dear Brett Jacobs: The Minnesota Pollution Control Agency (MPCA) staff has reviewed the final test report for the test conducted on the emission unit(s) referenced above at Green Plains Otter Tail LLC (Regulated Party) located in Fergus Falls, Minnesota. The test report was received on April 6, 2017. This notice serves as the Commissioner's written verification of compliance status of the Regulated Party pursuant to Minn. R. 7017.2020 to 7017.2025. The MPCA staff has determined that the test results demonstrate the following under test conditions:



Limitation Basis

Pollutant and Emission Limit

Test Result

Compliance Status

Fermentation C02 Scrubber (SV026, CE027)



7007.3000

Volatile Organic


≤ 6.04 Ibs/hour

Compliant

Distillation Vent Gas Scrubber (SV027, CE028)



7007.3000

Volatile Organic


≤ 1.59 Ibs/hour

Compliant

The tests were conducted while operating at the conditions in the following table.

Test

200 Proof Ethanol (gpm)

Beer Feed Rate (gpm)

Scrubber Pressure Drop (inches H2O)

Scrubber Water Flow Rate (gpm)

Additive ABS Flow Rate (gph)

Fermentation C02 Scrubber 104 657 1.1 44.6 1.1 Distillation Scrubber 105 675 0.21 32 0.4

Brett Jacobs – Sr. Environmental, Health, Safety, and Security Manager Page 2 June 12, 2017

Operating limits based on these conditions are defined in Item 1 of this letter. In addition, please be advised of the following: 1. The following operating limit applies pursuant to Minn. R. 7017.2025, subp. 3 and any additional

applicable requirement. This limit will supersede specific previous operating limits in the permit as stated below. Note: The Regulated Party has a Title V Part 70 Permit (Permit); therefore, the Permit will be re‐opened (under Minn. R. 7007.1600, subp. 1.D.) in order to add the new operating limit. This letter also grants preliminary approval and/or instruction to operate at the new rate until the new amendment is issued. Final approval will be given when the Permit is amended.

Emission Unit Operating Limit Averaging Method Fermentation CO2 Scrubber (SV026) (CE027)





ABS Injection Rate: ≥ 1.1 gallons per hour


Distillation Vent Gas Scrubber (SV027) (CE028)



The Regulated Party may not operate an emission unit at a less stringent rate than that listed in the table above unless it conducts a performance test at an alternate rate, the MPCA staff determines compliance at that rate for the emission unit, and a Notice of Compliance with approval to operate at the new rate is received. If an operating limit is exceeded, it must be reported in accordance with the deviation reporting requirements of Minn. R. 7007.0800, subp. 6(A).



Brett Jacobs – Sr. Environmental, Health, Safety, and Security Manager Page 3 June 12, 2017

If you have questions or comments regarding the content of this letter, please contact me at 651‐757‐2757. Sincerely,

Curtis H. Stock This document has been electronically signed.

Curtis H. Stock State Program Administrator Principal Land & Air Compliance Section Industrial Division CHS:lam cc: Activity ID REP20170003 @ AI ID 97465

Green Plains Otter Tail LLC Permit No. 11100077-101 Technical Support Document Attachment 7 Process Flow Diagram

TREA 7 / CE 001Grain Receiving

Baghouse

EQUI 24 / EU 005Corn Conveyor 2

EQUI 27 / EU 008Scalper

EQUI 1 / EU 010Grinder Surge Bin

EQUI 44 / EU 039Liquefaction Tank

EQUI 38 / EU 033Yeast Tank

EQUI 39 / EU 034Fermenter 1

EQUI 43 / EU 038Beerwell

TREA 22 / CE 027CO2 (Fermentation)

Scrubber

EQUI 47 / EU 042Rectifier

EQUI 46 / EU 041Side Stripper

EQUI 45 / EU 040Beer

Stripper

EQUI 112Whole Stillage Tank

EQUI 109 / EU 049Centrate Tank

EQUI 49 / EU 044Evaporator

EQUI 55 / EU 050DDGS Dryer with

Multiclone

EQUI 56 / EU 051DDGS Cooler

EQUI 4 / EU 031Truck Ethanol

Loadout

EQUI 116Rail Ethanol

Loadout

TREA 21 / CE 026Flaring

TREA 11 / CE 011DDGS Loadout

Baghouse

EQUI 35 / EU 028Boiler 1

EQUI 108 / EU 026Fire Pump

Legend

Process Flow DiagramGreen Plains Otter Tail, LLC

Fergus Falls, Minnesota

EQUI 34 / EU 016DDGS Load Spout

(Truck/Rail, Captured)

EQUI 21 / EU 002Corn Conveyor 1

EQUI 26 / EU 007Transfer Conveyor 1

Grain In

EQUI 8 / EU058Corn Storage Silo #1

EQUI 9 / EU059Corn Storage Silo #2

EQUI 114 / EU 009Silo #1 and #2

Reclaim

EQUI 14 / EU 064Silo #5 Conveyor



EQUI 16 / EU 066Corn Storage Silo #5



EQUI 168 / EU065Silo #5 Reclaim

EQUI 167 / EU 062Silo #4 Reclaim

EQUI 166 / EU 057Silo #3 Reclaim




EQUI 50 / EU 045Centrifuge 1




EQUI 48 / EU 043Molecular Sieves

(2 bottles)

EQUI 62 / TK 005Denatured Ethanol

Tank 2

EQUI 60 / TK 003Denaturant Storage

Tank

EQUI 61 / TK 004Denatured Ethanol

Tank 1

EQUI 58 / TK 001200 Proof Tank

EQUI 59 / TK 002200 Proof Tank

EQUI 33 / EU 015DDGS Conveyor

EQUI 32 / EU 014Bulkweigher

EQUI 36 / EU 029Boiler 2

Corn Oil Tank

TREA 8 / CE 008Hammermill Baghouse

TREA 23 / CE 028 Vent Gas (Distillation)

Scrubber

STRU 35 SV 025

TREA 25 / CE 030Thermal Oxidizer

STRU 23SV 011

STRU 34SV0 23

STRU 33SV 022

STRU 32SV 020

EQUI 18 / EU 027Emergency Generator STRU 37

SV 035

FUGI 9 / EU 019Cooling Tower Cell 3

STRU 31SV 038

STRU 30SV 039

STRU 29SV 040

STRU 36SV 034

EQUI 128Corn Syrup Retention

Tank

EQUI 110Slurry Tank

EQUI 127Syrup Tank

Yeast Mix Tank

EQUI 111Process Condensate

Tank

EQUI 113 Thin Stillage Tank

Syrup Loadout

Corn Oil Loadout



Truck Loadout

Process Line

Exhaust Line

Process Unit

Stack / Vent

Control Equipment

Insignificant Activity

EQUI 117Corn Dump Pit /

Auger 1 (Uncaptured)

Corn Oil Extract

EQUI 138DDGS Load Spout

(Truck/Rail, Uncaptured)

EQUI 142Superheater

EQUI 149Evaporator Condenser

EQUI 148Evaporator

Condensate Reciever

EQUI 150Evaporator Vacuum,

Receiver

EQUI 144DD&E Condensate

Preheater

EQUI 145Acid Column

EQUI 139Beer Column Vent

Condenser

EQUI 143Regen Preheater

EQUI 147Regen Reciever

EQUI 146Product Condenser

EQUI 20 / EU 001Corn Dump Pit /

Auger 1 (Captured)

EQUI 23 / EU 004Corn Dump Pit /

Auger 2 (Captured)

EQUI 118Corn Dump Pit /

Auger 2 (Uncaptured)

EQUI 25 / EU 006Corn Elevator 2

EQUI 22 / EU 003Corn Elevator 1

EQUI 115Corn Elevator 3

EQUI 29 / EU 011Hammermill 1



EQUI 119Hammermill 1

Conveyor


Conveyor


Conveyor

EQUI 122Flour Conveyor 1



EQUI 126Flour Elevator

EQUI 125Screw Conveyor, Recycle Solids

EQUI 140Reflux Condenser

EQUI 141Reflux Vent Condenser

EQUI 129DDGS Storage

Conveyor 1

EQUI 130 DDGS Storage

Conveyor 2


Elevator


Conveyor 3

EQUI 133 DDGS Storage

Conveyor 4

EQUI 134DDGS Reclaim via Front End Loader

EQUI 135DDGS Reclaim

Dump Pit

EQUI 136DDGS Reclaim

Convyor


Reclaim Elevator

TREA 39DDGS Cooler

Baghouse

STRU 27SV 036

STRU 28SV 037

STRU 80(AOS)

STRU 26SV 028

EQUI 152Gasoline Dispensing

EQUI 151Gasoline Tank (1,000

gallons)

FUGI 11 / FS 007Temporary Flat

Storage

EQUI 169Boiler Make-up

Heater

FUGI 16 / FS 006Wetcake - AOS

FUGI 15 / FS 005Equipment Leaks

FUGI 17 / FS 004Truck Traffic – Paved

Roads

FUGI 18Truck Traffic –

Unpaved Roads

STRU 22SV 008

STRU 7SV 001

STRU 24SV 026

STRU 25SV 027

STRU 42

DDGS Storage Building

STRU 79(AOS)

Green Plains Otter Tail LLC Permit No. 11100077-101 Technical Support Document Attachment 8 1995 U.S. EPA Memorandum “Calculating Potential to Emit (PTE) for Emergency Generators”

September 6, 1995

MEMORANDUM

SUBJECT: Calculating Potential to Emit (PTE) for EmergencyGenerators

FROM: John S. Seitz, DirectorOffice of Air Quality Planning and Standards (MD-10)

TO: Director, Air, Pesticides and Toxics Management Division, Regions I and IV

Director, Air and Waste Management Division,Region II

Director, Air, Radiation and Toxics Division,Region III

Director, Air and Radiation Division,Region V

Director, Air, Pesticides and Toxics Division,Region VI

Director, Air and Toxics Division,Regions VII, VIII, IX, and X

The purpose of this guidance is to address the determinationof PTE for emergency electrical generators.

Background

In a memorandum dated January 25, 1995, the EnvironmentalProtection Agency (EPA) addressed a number of issues related tothe determination of a source's PTE under section 112 and title Vof the Clean Air Act (Act). One of the issues discussed in thememorandum was the term "maximum capacity of a stationary sourceto emit under its physical and operational design," which is partof the definition of "potential to emit." The memorandumclarified that inherent physical limitations, and operationaldesign features which restrict the potential emissions ofindividual emission units, can be taken into account. Thisclarification was intended to address facilities for which thetheoretical use of equipment is much higher than could everactually occur in practice. For such facilities, if their

physical limitations or operational design features are not taken

into account, the potential emissions could be overestimated andconsequently the source owner could be subject to the Actrequirements affecting major sources. Although such sourceowners could in most cases readily accept enforceable limitationsrestricting the operation to its designed level, EPA believesthis administrative requirement for such sources to beunnecessary and burdensome.

On the topic of "physical and operational design," theJanuary 25 memorandum provided a general discussion. Inaddition, EPA committed to providing technical assistance on thetype of inherent physical and operational design features thatmay be considered acceptable in determining the potential to emitfor certain individual small source categories. The EPA iscurrently conducting category-specific analyses in support ofthis effort, and hopes as a result of these analyses to generatemore general guidance on this issue as well.

The purpose of this memorandum is to address the issue ofPTE as it relates specifically to emergency generators. There isa significant level of interest in this source category becausethere are many thousands of locations for which an emergencygenerator is the only emitting source. Moreover, based on areview of this source category, there exists a readilyidentifiable constraint on the operational design of emergencygenerators. Hence, the EPA believes it would be useful toprovide today's guidance before the entire effort is complete.

The policies set forth in this memorandum are intendedsolely as guidance, do not represent final Agency action, andcannot be relied upon to create any rights enforceable by anyparty.

Guidance for Emergency Generators

For purposes of today's guidance, an "emergency generator"means a generator whose sole function is to provide back-up powerwhen electric power from the local utility is interrupted. Theemission source for such generators is typically a gasoline ordiesel-fired engine, but can in some cases include a small gasturbine. Emissions consist primarily of carbon monoxide andnitrogen oxides. Other criteria pollutants, and hazardous airpollutants, are also emitted, but at much lower levels. Emissions occur only during emergency situations (i.e., whereelectric power from the local utility is interrupted), and for avery short time to perform maintenance checks and operatortraining.

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The EPA believes that generators devoted to emergency usesare clearly constrained in their operation, in the sense that, bydefinition and design, they are used only during periods whereelectric power from public utilities is unavailable. Two factorsindicate that this constraint is in fact "inherent." First,while the combined period for such power outages during any oneyear will vary somewhat, an upper bound can be estimated whichwould never be expected to be exceeded absent extraordinarycircumstances. Second, the duration of these outages areentirely beyond the control of the source, and when they do occur(except in the case of a major catastrophe) rarely last more thana day.

For emergency generators, EPA has determined that areasonable and realistic "worst-case" estimate of the number ofhours that power would be expected to be unavailable from thelocal utility may be considered in identifying the "maximumcapacity" of such generators for the purpose of estimating theirPTE. Consequently, EPA does not recommend the use of 8760 hoursper year (i.e., full-year operation) for calculating the PTE foremergency generators. Instead, EPA recommends that the potentialto emit be determined based upon an estimate of the maximumamount of hours the generator could operate, taking into account(1) the number of hours power would be expected to be unavailableand (2) the number of hours for maintenance activities.

The EPA believes that 500 hours is an appropriate defaultassumption for estimating the number of hours that an emergencygenerator could be expected to operate under worst-caseconditions. Alternative estimates can be made on a case-by-casebasis where justified by the source owner or permitting authority(for example, if historical data on local power outages indicatethat a larger or smaller number would be appropriate). Using the500 hour default assumption, EPA has performed a number ofcalculations for some typically-sized emergency generators. These calculations indicate that these generators, in and ofthemselves, rarely emit at major source levels. (Of course,there may be unusual circumstances where these calculations wouldnot be representative, for example where many generators arepresent that could operate simultaneously).

Cautions

Today's guidance is only meant to address emergencygenerators as described. Specifically, the guidance does notaddress: (1) peaking units at electric utilities; (2) generatorsat industrial facilities that typically operate at low rates, butare not confined to emergency purposes; and (3) any standby

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generator that is used during time periods when power isavailable from the utility. This guidance is also not intendedto discourage permitting authorities from establishingoperational limitations in construction permits when suchlimitations are deemed appropriate or necessary. Additionally,this memorandum is not intended to be used as the basis torescind any such restrictions already in place.

Distribution/Further Information

The Regional Offices should send this memorandum to Stateswithin their jurisdiction. Questions concerning specific issuesand cases should be directed to the appropriate Regional Office. Regional Office staff may contact Tim Smith of the IntegratedImplementation Group at 919-541-4718. The document is alsoavailable on the technology transfer network (TTN) bulletinboard, under "Clean Air Act" - "Title V" - "Policy GuidanceMemos". (Readers unfamiliar with this bulletin board may obtainaccess by calling the TTN help line at 919-541-5384).

cc: Air Branch Chief, Region I-XRegional Air Counsels, Region I-X Adan Schwartz (2344)Tim Smith (MD-12)