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Dominion Energy Cove Point LNG, LP

707 East Main Street, Richmond, VA 23219

December 10, 2018 Kimberly D. Bose, Secretary Federal Energy Regulatory Commission 888 First Street, N.E. Washington, DC 20426 Re: Dominion Energy Cove Point LNG, LP Cove Point Liquefaction Project Docket No. CP13-113-000

Supplemental Information – Condition 24 Dear Secretary Bose:

By Order dated September 29, 2014, the Federal Energy Regulatory Commission (FERC or Commission) authorized Dominion Cove Point LNG, LP1 (Cove Point or Dominion Energy) to construct and operate certain facilities that comprise the Cove Point Liquefaction Project (Project). Dominion Cove Point LNG, LP. 148 FERC ¶ 61,244 (the “Order”). As required under Condition 24 of Appendix B to the Order, Cove Point hereby submits the full load noise survey for the LNG Terminal. Facility noise levels do not meet FERC requirements (i.e., < 55 LDN) at NSA 1 or NSA 2. To meet the FERC requirement at NSA’s 1 and 2, Cove Point will implement the Noise Control Action Plan as described in Section 7.0 of this filing within one year of the station’s in-service date (i.e., April 9, 2019). Cove Point will confirm compliance with the above requirement by filing a second noise survey no later than 60 days after Cove Point installs the additional noise control(s).

If you have any questions, please contact me at (804) 771-6976.

Respectfully submitted,

/s/ Virginia E. Weis

Virginia E. Weis Gas Transmission Certificates Consultant

cc: Joanne Wachholder, FERC Ghanshyam Patel, FERC Magdalene Suter, FERC

1 On May 12, 2017 Dominion Cove Point LNG, LP changed its name to Dominion Energy Cove Point LNG,

LP.

Noise Level Evaluation for the Middletown Repowering Project

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2018

Michael Theriault Acoustics, Inc.

401 Cumberland Avenue, Suite 1607

Portland, Maine 04101

Report No. 1992

December 2018

Full Load Noise Survey for the Cove Point Liquefaction Facility


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Table of Contents 1.0 Executive Summary ............................................................................................................ 1 2.0 Facility Description ............................................................................................................. 1 3.0 FERC Regulations and Noise Monitoring Requirements................................................... 2 4.0 Environmental Noise Level Monitoring ............................................................................. 3 5.0 Noise Level Monitoring Results ......................................................................................... 6 6.0 Discussion of Results .......................................................................................................... 7 7.0 Noise Control Action Plan .................................................................................................. 7 Tables: Table 1 - FERC Noise Level Monitoring Locations ........................................................................... 4 Table 2 - FERC Noise Level Monitoring Summary ........................................................................... 7 Figures: Figure 1 - FERC Noise Level Monitoring Locations


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Appendices: A1 Federal Energy Regulatory Commission Order A2 Instrument Specifications A3 Instrument Calibration Certificates A4 Noise Level Data and Data Reductions A5 Statistical Levels Abbreviations:

ANSI American National Standards Institute ASME American Society of Mechanical Engineers B&K Brüel & Kjær CIC Charge Injection Calibration CPT Cove Point Terminal dBA Decibels, A-Weighted FERC Federal Energy Regulatory Commission Hz Hertz LAEQ Equivalent Energy Level, A-Weighted L10 Level exceeded 10% of the measurement period L90 Level exceeded 90% of the measurement period LDN Day-Night Level LNG Liquid Natural Gas LP Low Pressure mmscf Million Standard Cubic Feet MR Mixed Refrigerant MTA Michael Theriault Acoustics, Inc. NSA Noise Sensitive Area SPL Sound Pressure Level Terminal Cove Point Terminal


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1.0 Executive Summary Dominion Energy Cove Point LNG, LP (Cove Point) commenced commercial operation of its Liquefaction Facility in Calvert County, Maryland, on April 9, 2018. The Liquefaction Facility adds Liquid Natural Gas (LNG) production and export services to the existing Cove Point Terminal (CPT). Pursuant to the Order granted by the Federal Energy Regulatory Commission (FERC), 1

noise produced during operation of the Terminal is limited to a Day-Night Sound Level (LDN) of 55 dBA. The FERC Order further stipulates that Cove Point shall file a full load noise survey with the Commission’s Secretary no later than 60 days after placing the Cove Point LNG Facility into service. If a full load noise survey is not possible, Cove Point is to provide an interim survey at maximum achievable capacity and file a full load noise survey within 6 months. In May 2018, within 60 days after placing the LNG Facility into service, Cove Point filed an interim versus full load noise survey with the Commission, since the CPT was not in full operation at the time.2 Survey results showed that while Cove Point operated at high load (88%), Day-Night sound levels (LDN) ranged from approximately 48 to 54 LDN at the nearest noise sensitive areas.

Noise level monitoring during full load operation of the Facility (defined as > 90% LNG production) has been conducted. Survey results showed that Day-Night sound levels (LDN) ranged from approximately 53 to 65 LDN at NSA 1; 49 to 59 LDN at NSA 2; and from 39 to 55 LDN at NSA 3. Given these results, Facility noise levels do not meet FERC requirements (i.e., < 55 LDN) at NSA 1 or NSA 2. As additionally dictated by the Order, if noise attributable to operation of all equipment at the LNG Terminal, under interim or full load conditions, exceeds an LDN of 55 dBA at any nearby NSAs, Dominion shall file a report on what changes are needed and shall install the additional noise controls to meet the level within 1 year of the in-service date. Cove Point has conducted noise control investigations to identify the sources and operations responsible for elevated sound levels at NSA receivers, employing several measurement methods and techniques to quantify equipment noise emissions. As a result of these investigations, Cove Point developed a noise control action plan that includes installing acoustical lagging (1) around and under the gas turbine exhaust frame blower fans; (2) on the low-pressure steam line of the steam turbine deaerator; and (3) on additional sections of the low-pressure (LP) mixed 1 - 148 FERC ¶ 61,244 UNITED STATES OF AMERICA FEDERAL ENERGY REGULATORY COMMISSION, Dominion Cove Point LNG, LP, Docket No. CP13-113-000 ORDER GRANTING SECTION 3 AND SECTION 7 AUTHORIZATIONS, (Issued September 29, 2014). 2 - Interim Noise Level Compliance Testing for the Cove Point Liquefaction Facility, Report No. 1976, Michael Theriault Acoustics, Inc., May 2018.


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refrigerant (MR) line for compressor string B. Noise testing will resume after the planned improvements have been completed. If CPT noise levels still exceed regulatory limits after implementation of the noise control action plan, Cove Point, through an iterative process, will initiate additional studies to determine the cause(s) of the excess noise levels and will incorporate appropriate noise mitigation strategies into the design and/or operations of the Terminal until FERC requirements for the control of noise are met. 2.0 Facility Description The Cove Point Terminal is located at 2100 Cove Point Road in Lusby, Maryland, near the western shore of Chesapeake Bay, and consists of the existing LNG import terminal and the new Liquefaction Facility including export infrastructure, as shown in Figure 1. Existing Utilities:

• Three natural gas-fired General Electric Frame 3 combustion turbines. • Two natural gas-fired General Electric Frame 5 combustion turbines. • One natural gas-fired Caterpillar Solar combustion turbine. • Heat Recovery Steam Generators and steam turbines. • Three Air Separation Units.

New Utilities:

• Two refrigerant compressor strings (A & B) each including a natural gas-fired General Electric Frame 7 combustion turbine, three refrigerant compressors and a helper motor.

• Two heat recovery steam generators, two steam turbines, two auxiliary boilers, one

air-cooled condenser, and numerous air-cooled heat exchangers, pumps, motors and auxiliary support systems to produce approximately 750 mmscf/day of LNG.

New equipment was installed to the west and south of the existing facilities. As part of the noise control design for the project, a 60-foot high sound wall was erected along the southern and western borders of the site as also shown in Figure 1. 2.1 Noise-Sensitive Areas As identified in the FERC Order granting authorization to construct the Facility, the nearest Noise Sensitive Areas (NSAs) to the site are a residence at 2115 Cove Point Road, located approximately


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460 feet south of the sound wall (NSA 1); and a residence at 1520 Cove Point Road, located approximately 760 feet west of the sound wall (NSA 2); as well as a residence at 10952 Chesapeake Drive (NSA 3), found approximately 0.9 miles east of the Terminal. 3.0 FERC Regulations and Noise Monitoring Requirements As per Environmental Condition 24 of the FERC Order granting authorization to construct the Facility (see Appendix A1 for an abridged version),

“Dominion shall file a full load noise survey at the Cove Point Liquefaction Project with the Secretary no later than 60 days after placing the Cove Point Liquefaction Project in service. If a full load condition noise survey is not possible, Dominion shall provide an interim survey at the maximum possible operation within 60 days of placing the Cove Point Liquefaction Project in service and file the full load operational survey within 6 months. If the noise attributable to the operation of all of the equipment at the LNG Terminal, under interim or full load conditions, exceeds an Ldn of 55 dBA at any nearby NSAs, Dominion shall file a report on what changes are needed and shall install the additional noise controls to meet the level within 1 year of the in-service date. Dominion shall confirm compliance with the above requirement by filing a second noise survey with the Secretary no later than 60 days after it installs the additional noise controls.

In its full load noise survey at the Cove Point Liquefaction Project, Dominion shall establish an additional measurement position representing a noise sensitive area to the east of the LNG Terminal. This position shall be located at the closest residence along Chesapeake Drive in Lusby, Maryland.”

3.2 Day-Night Level The Day-Night Sound Level (LDN) is the preferred metric for the assessment of environmental noise by federal bureaus such as FERC and is a single, calculated value representing the average of twenty-four (24) hour-long “equivalent energy levels” or LAEQ samples. An hour-long LAEQ is a single number, either measured or calculated, that is ‘equal’ in energy to the actual fluctuating noise during the 1-hour measurement period (similar to ‘average’ speed reported by a vehicle’s trip odometer). As shown in Figure 2, a constant noise level of 50 dBA (LAEQ) for a period of 1-hour is equivalent to the fluctuating noise for the same period, produced by car and truck passes, which vary in level from less than 30 to more than 60 dBA.


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Before averaging together twenty-four (24) hour-long LAEQ samples for the Day-Night (LDN) calculation, a 10-decibel ‘penalty’ is added to the samples collected between 10 pm and 7 am in order to account for the potential of increased disturbance when people are resting, relaxing or sleeping. When the sound level (LAEQ) from a facility is steady or constant (such as during Cove Point full load operating conditions), then the Day-Night sound level (LDN) can be alternately and more easily calculated by adding 6.4 dB to the constant, measured LAEQ level (LDN = LAEQ + 6.4 dB). The 6.4 dB adjustment is a consequence of the 10-dB nighttime ‘penalty’. 4.0 Environmental Noise Level Monitoring This section describes the specific measurement procedures used to conduct noise level monitoring. 4.1 Description of Measurements

1. Location. Sound level measurements were collected at three (3) offsite locations. As shown in Figure 1 and listed in Table 1, noise level readings were taken at:

Table 1 – FERC Noise Level Monitoring Locations

Designation Location NSA 1 2115 Cove Point Road NSA 2 1520 Cove Point Road NSA 3 10952 Chesapeake Drive

2. Procedures. Sound level measurements were conducted using procedures from

ANSI/ASME PTC 36 (Measurement of Industrial Sound); ANSI S1.13 (Methods for Measurement of Sound Pressure Levels); and ANSI S12.9 (Quantities and Procedures for Description and Measurement of Environmental Sound) in order to obtain representative noise emissions while the CPT operated at full load conditions.

3. Equipment. Noise level measurements consisted of attended readings using hand-held sound level analyzers as well as readings collected using autonomous, best-in-class acoustic equipment housed in weatherproof enclosures. All measurements were made using precision real time sound analyzers and microphones conforming to Type 1 tolerance requirements of the American National Standards Institute (ANSI S1.4 - Specification for Sound Level Meters). Specifically, Brüel & Kjær Model 2250/2270 sound level analyzers, Model 4198/4952 Outdoor Microphones, Model 4189 Free-Field Microphones, and Model 4231 Acoustical Calibrators were used. Technical specifications for these instruments can be found in Appendix A2.


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4. Calibration. All sound measurement equipment was qualified within the preceding twelve (12) month period using reference standards traceable to the National Institute of Standards and Technology (NIST) and conducted by an accredited calibration laboratory. Instrument calibration certificates are provided in Appendix A3. During unattended measurements, remotely accessible monitors were calibrated daily and automatically using charge injection calibration (CIC), a technique which verifies integrity of the complete measurement chain, including microphone, preamplifier, cabling and sound level analyzer.

5. Testing Period. Sound level measurements were collected between the hours of 2 am and 4 am for each day reported. This early morning time frame was selected to minimize the influence of non-Facility related noise (such as from traffic, aircraft, pedestrian activities, etc.) When necessary, the contribution of short-term background noise (for example, from vehicle passbys) was removed as described in Section 7.2 of ANSI/ASA S12.9/Part 3.

6. Measured Parameters. All sound level readings consisted of hourly A-weighted Equivalent Energy Levels (LAEQ) and hourly A-weighted statistical L10 and L90 readings (See Appendix A5 for a description of these metrics). Specifically, all measurements consisted of continuously captured, 1-second resolution LAEQ, L10 and L90 time histories over hourly periods, to accurately represent noise emissions from the Facility and to aid in minimizing contamination from intermittent, non-Facility related noise sources. In addition, digital audio recordings were collected throughout the measurement period at each location. Sound level monitors also continuously captured 1-second resolution LAEQ, L10 and L90 one-third octave band time histories.

7. Meteorology. Local meteorological data including temperature, wind speed, and wind direction were continuously logged using a meteorological station deployed near NSA 2 or NSA 3, and obtained from Cove Point’s onsite weather station.

8. Reporting Criteria. The noise level data presented in this report are the 20 measurement sets taken on different days in November 2018 which satisfied the following criteria.

a. When the Facility was operating normally (i.e., no upset or transient conditions,

steam venting, equipment trips, etc.);

b. While the Facility operated at full load, (i.e., defined as LNG production at 90% or greater of designed output);


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c. During favorable weather conditions for good sound propagation (winds < 8 mph)

and in the absence of noticeable precipitation;

d. When simultaneous readings from NSA 1, NSA 2 and NSA 3 monitors were available from 2 am to 4 am.

9. Data Reductions. Consistent with ANSI/ASA S12.9, Section 7.1, some data were corrected

by accounting for noise contributions from external sources present during the time of measurement (e.g. vehicle passbys, insects, bird calls, etc.) to arrive at a better estimate of actual Facility noise emissions. Individual noise level ‘events’ (such as passing cars, sirens, truck deliveries, pedestrian activities, etc.) were mathematically removed from the 2-hour time histories using specialized software, (Brüel & Kjær Acoustic Analysis Software Type 7820). Audio recordings were reviewed to aid in determining when non-Facility related noise was present during the measurement. These analyses are provided in Appendix A4.

Additionally, the L90 statistical measure from 2 am to 4 am was sometimes used as a surrogate for the LAEQ value in calculating an LDN if for example, wind-induced vegetation rustle was a predominant contaminant to measured levels.

4.2 Third-Party Qualifications Noise level monitoring was conducted by Michael Theriault Acoustics, Inc. (MTA) of Portland, Maine. For more than two decades, MTA has assisted owners, developers, designers and builders in predicting, controlling and measuring industrial noise. 5.0 Noise Level Monitoring Results Table 2 summarizes the calculated LDN results based on LAEQ measurement data from 2 am to 4 am for the 20 days of data which met reporting criteria. As shown, Day-Night sound levels ranged from approximately 54 to 65 LDN at NSA 1; 49 to 59 LDN at NSA 2; and from 39 to 55 LDN at NSA 3.3 Given these results, Facility noise levels do not meet FERC requirements (i.e., < 55 LDN) at NSA 1 or NSA 2 but do at NSA 3. Compliance at NSA 3 is largely achieved due to the sizable distance to the Terminal, which is on the order of 1-mile. As such, future noise monitoring by Cove Point is only planned for NSA 1 and NSA 2.

3 - NSA 3 was largely influenced by non-Facility related noise sources (e.g. bird calls, wind-induced vegetation rustle).


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Table 2 – FERC Noise Level Monitoring Summary

Test No. Measurement Date

NSA 1 LDN

based on LAEQ (2 am to 4 am)

NSA 2 LDN based on

LAEQ (2 am to 4 am)

NSA 3 LDN based on

LAEQ (2 am to 4 am) 1 11/4/18 63.3 59.1 48.9 2 11/6/18 54.4 50.8 38.5 3 11/7/18 60.8 52.0 51.3 4 11/8/18 63.2 58.2 52.6 5 11/9/18 61.8 58.7 48.3 6 11/10/18 62.6 53.5 50.7 7 11/11/18 63.1 52.5 51.1 8 11/12/18 55.1 50.0 42.6 9 11/14/18 63.7 54.2 50.3

10 11/15/18 62.9 59.4 51.5 11 11/17/18 64.6 55.5 49.0 12 11/18/18 58.8 56.4 42.4 13 11/19/18 54.5 49.3 53.9 14 11/20/18 54.9 51.4 48.3 15 11/22/18 61.8 53.3 54.1 16 11/23/18 57.6 55.3 42.4 17 11/24/18 59.9 58.5 42.9 18 11/25/18 62.4 51.9 55.0 19 11/26/18 53.3 50.7 44.5 20 11/27/18 57.4 50.8 48.5

6.0 Discussion of Results

In general, elevated levels at NSA 1 and NSA 2 appear related to seasonal changes in weather patterns, including wind direction and lower ambient air temperatures. 7.0 Noise Control Action Plan The following noise control action plan will be implemented:

1. Acoustical lagging around and under the gas turbine exhaust frame blowers will be reinstalled.

2. The low-pressure steam line of the steam turbine deaerator will be acoustically lagged

with 4 inches of 5 lb/cuft mineral wool, covered with one layer of 2 lb/sqft loaded vinyl and weatherproofed with an aluminum jacket.


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3. Additional sections of the low-pressure mixed refrigerant lines of compressor string B will be acoustically lagged with 4 inches of 5 lb/cuft mineral wool, covered with one layer of 2 lb/sqft loaded vinyl and weatherproofed with an aluminum jacket.

4. Noise testing will resume after the planned improvements have been completed. If CPT noise levels still exceed regulatory limits after implementation of the noise control action plan, Cove Point, through an iterative process, will initiate additional studies to determine the cause(s) of the excess noise levels and will incorporate appropriate noise mitigation strategies into the design and/or operations of the Terminal until FERC requirements for the control of noise are met.

FERC NOISE LEVEL MONITORING LOCATIONS

COVE POINT LIQUEFACTION FACILITYLUSBY, MARYLAND

FIGURE 1 PROJECT NO. 1992

N

EXAMPLE LAEQ ANALYSIS

COVE POINT LIQUEFACTION FACILITYLUSBY, MARYLAND

FIGURE 2 PROJECT NO. 1992

20

30

40

50

60

70

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59

Soun

d L

evel

(A-w

eigh

ted,

dB

A)

Time (Seconds)

Example LAEQ Analysis

Car Pass-by

TruckPass-by

LAEQ

A1 Federal Energy Regulatory Commission Order

148 FERC ¶ 61,244UNITED STATES OF AMERICA

FEDERAL ENERGY REGULATORY COMMISSION

Before Commissioners: Cheryl A. LaFleur, Chairman; Philip D. Moeller, Tony Clark, and Norman C. Bay.

Dominion Cove Point LNG, LP Docket No. CP13-113-000

ORDER GRANTING SECTION 3 AND SECTION 7 AUTHORIZATIONS

(Issued September 29, 2014)

Paragraph Numbers

I. Background ............................................................................................................................3.II. Proposal.................................................................................................................................7.

A. Dominion’s Cove Point Liquefaction Project ..................................................................7.B. Virginia Facilities .............................................................................................................12.C. Services.............................................................................................................................18.

III. Public Notice .......................................................................................................................20.IV. Discussion ...........................................................................................................................26.

A. Dominion’s Cove Point Liquefaction Project ..................................................................26.B. Virginia Facilities .............................................................................................................34.

1. Subsidization.................................................................................................................37.2. Existing Customers.......................................................................................................38.

a. Turnback of Service Opportunity.............................................................................38.b. Impacts on Existing Pipeline Service.......................................................................49.

3. Existing Pipelines .........................................................................................................57.4. Landowners ..................................................................................................................58.5. Conclusion ....................................................................................................................59.

C. Rates .................................................................................................................................60.1. Virginia Facilities .........................................................................................................60.

a. Recourse Rates .........................................................................................................62.b. Negotiated Rate ........................................................................................................64.

20140929-3053 FERC PDF (Unofficial) 09/29/2014

Docket No. CP13-113-000 - 104 -

used on the ground flares and a noise analysis demonstrating that the noise from all of the equipment operated during commissioning (including ground flares) would not exceed a day-night sound level (Ldn) of 55 decibels on the A-weighted scale (dBA) at the nearby noise sensitive areas (NSA).

23. Prior to construction at the Terminal or Offsite Area A during nighttime hours (10:00 pm to 7:00 am), Dominion shall file with the Secretary for review and written approval by the Director of OEP, a revised nighttime construction noise analysis and mitigation plan. The revised plan shall include:

a. clear identification of all NSAs within one half mile of Offsite Area A, the projected noise levels of construction activities at night at the NSAs, and the mitigation measures Dominion commits to implementing at Offsite Area A;

b. specifications regarding the input parameters that were modeled (particularly the number of each equipment and the consideration of back-up alarms);

c. details for mitigation measures (e.g. height and material of moveable barriers, when back-up alarms over a spotter are required, the availability of lower-pitched back-up alarm equipment); and

d. noise information related to construction in the quarterly public newsletter, and clarification identifying who will receive this newsletter.

24. Dominion shall file a full load noise survey at the Cove Point Liquefaction Projectwith the Secretary no later than 60 days after placing the Cove Point Liquefaction Project in service. If a full load condition noise survey is not possible, Dominion shall provide an interim survey at the maximum possible operation within 60 days of placing the Cove Point Liquefaction Project in service and file the full load operational survey within 6 months. If the noise attributable to the operation of all of the equipment at the LNG Terminal, under interim or full load conditions, exceeds an Ldn of 55 dBA at any nearby NSAs, Dominion shall file a report on what changes are needed and shall install the additional noise controls to meet the level within 1 year of the in-service date. Dominion shall confirm compliance with the above requirement by filing a second noise survey with the Secretary no later than 60 days after it installs the additional noise controls.

In its full load noise survey at the Cove Point Liquefaction Project, Dominion shall establish an additional measurement position representing a noise sensitive area to the east of the LNG Terminal. This position shall be located at the closest residence along Chesapeake Drive in Lusby, Maryland.


Docket No. CP13-113-000 - 105 -

25. Dominion shall file noise surveys with the Secretary no later than 60 days after placing the modified Pleasant Valley Compressor Station in service. If a full load condition noise survey is not possible, Dominion shall provide an interim survey at the maximum possible horsepower load and provide the full load survey within 6 months. If the noise attributable to the operation of all of the equipment at the compressor station, under interim or full horsepower load conditions, exceeds an Ldn of 55 dBA at any nearby NSAs, Dominion shall file a report on what changes are needed and should install the additional noise controls to meet the level within 1 year of the in-service date. Dominion shall confirm compliance with the above requirement by filing a second noise survey with the Secretary no later than 60 days after it installs the additional noise controls.

Measures 26 to 76 shall apply to the proposed Cove Point Liquefaction Project at Dominion Cove Point’s LNG Terminal. Information pertaining to these specific recommendations shall be filed with the Secretary for review and written approval by the Director of OEP either: prior to initial site preparation; prior to construction of final design; prior to commissioning; prior to introduction of hazardous fluids; or prior to commencement of service, as indicated by each specific condition. Specific engineering, vulnerability, or detailed design information meeting the criteria specified in Order No. 683 (Docket No. RM06-24-000), including security information, should be submitted as critical energy infrastructure information pursuant to 18 C.F.R. § 388.112. See Critical Energy Infrastructure Information, Order No. 683, 71 Fed. Reg. 58273 (Oct. 3, 2006), FERC Stats. & Regs. ¶ 31,228 (2006). Information pertaining to items such as: offsite emergency response; procedures for public notification and evacuation; and construction and operating reporting requirements, will be subject to public disclosure. All information shall be filed a minimum of 30 days before approval to proceed is requested.

26. Prior to initial site preparation, Dominion shall provide procedures for controlling access during construction.

27. Prior to initial site preparation, Dominion shall file the quality assurance and quality control procedures for construction activities.

28. Prior to initial site preparation, Dominion shall file a plot plan of the final design showing all major equipment, structures, buildings, and impoundment systems.

29. Prior to initial site preparation, a technical review of facility design shall be filed that:


A2 Instrument Specifications

P R O D U C T D ATA

Types 2250 and 2270 are innovative, hand-held analyzers fromBrüel & Kjær. The analyzers’ easy, safe and clever designphilosophy is based on extensive research. Type 2250 has wonseveral awards for its excellent ergonomics and design.

Both analyzers can host a number of applications includingfrequency analysis, logging, FFT, building acoustics and signalrecording. Additionally, Type 2270 can simultaneously measurewith two microphones, two accelerometers or one of each. Allapplication modules can be ordered as part of a fullypreconfigured instrument or separately at any time, as the needarises.

The combination of application modules and innovativehardware makes these analyzers dedicated solutions forperforming high-precision measurement tasks in environmental,occupational and industrial application areas. Together withMeasurement Partner Field App, MP Cloud support andMeasurement Partner Suite for post-processing, they provide atotal solution for your measurement needs.

Hand-held Analyzer Types 2250 and 2270for Types 2250-S, 2250-S-C, 2270-S and 2270-S-C

Uses and Features

Uses• Class 1 sound measurements to latest international standards• Environmental noise assessment and tone assessment

(1/3-octave and FFT)• Loudness and noise rating measurements• Occupational noise evaluation• Reverberation time measurements (see BP 2190)• Building acoustics (see BP 2190)• Product quality control (see BP 2183)• Noise source identification using sound intensity (see

BP 2341)*

• Audiometer calibration• Real-time analysis in 1/1- and 1/3-octave bands• Analysis of logging profiles for broadband parameters and

spectra• Vibration criteria measurements• Low-frequency building vibration according to ISO 8041:05

and DIN 45669 – 1:2010 – 09• Whole-body and hand-arm human vibration measurements

(RMS, MTVV and Crest Factor)• Infrasound (G-weighting) measurements according to

ISO 7196:1995 and ANSI S1.42 – 2001 (R2011)

Features• Hardware:

– 2-channel measurement capability with any combination ofmicrophones and accelerometers*

– Large, high-resolution, touch-sensitive colour screen– Communication via USB, LAN and options for Wi-Fi or 4G

communication– Integral digital camera for documentation and reference*

– Automatic detection of and correction for windscreen– Robust and environmentally protected (IP44)

• Software:– Dynamic range in excess of 123 dB(A)– 0.5 Hz – 20 kHz broadband linear range– Personalized measurement, display and job setup– ‘Smiley’ quality indicators with hints and warnings– Timers for automatic start of measurement– Measurement Partner Cloud (MP Cloud)– Measurement Partner Field App– Measurement Partner Suite for comprehensive post-

processing– GPS coordinates stored with measurement data– Simultaneous noise and weather data acquisition– 24- or 16-bit recording during all or parts of measurement

* Type 2270 only.

http://www.bksv.com/doc/bp2183.pdf




PRODUCT DATA

Type 2250 is the innovative, 4th generation, hand-heldanalyzer from Brüel & Kjær. The design philosophy isbased on extensive research which concluded that theinstrument should be easy and safe to use, while at thesame time incorporating clever features. Type 2250 hasbeen awarded several prizes for its combination of ex-cellent ergonomics and attractive design.

Type 2250 can host a number of software modules,including frequency analysis, logging (profiling) and re-cording of the measured signal. These are availableseparately at any time � or you can order a fully pre-configured instrument from the factory.

The combination of software modules and innovativehardware makes the instrument into a dedicated solutionfor performing high-precision measurement tasks, inenvironmental, occupational and industrial applicationareas. As a result, you get the functionality you neednow, plus the option of opening up for more functionalitylater � and your investment is securely protected.

Uses and Features

USES� Environmental noise assessment and monitoring� Occupational noise evaluation� Selection of hearing protection� Noise reduction� Product quality control� Class 1 sound measurements to the latest

international standards� Real-time analysis of sound in 1/1- and 1/3-octave

bands� Analysis of time histories for broadband parameters

and spectra (Logging)� Documentation of measurements using text and

voice annotations� Documentation of measurements through recording

of measured sound

FEATURES� Large, high-resolution, touch-sensitive colour screen� Data storage on plug-in memory-cards� Standard USB (On-the-Go) computer interface� Dynamic range in excess of 120 dB� 3 Hz � 20 kHz broadband linear frequency range� Real-time frequency analysis in 1/1- or 1/3-octave

bands� Broadband and spectral data can be logged to obtain

a time history for later analysis� Sound recording of measured signal during all or

parts of a measurement � Personal measurement, display and job setup� PC software included for setup, archiving, export and

reporting� Automatic detection of, and correction for,

windscreen� Robust and environmentally protected (IP44)

Hand-held Analyzer � Type 2250, with Sound Level Meter Software BZ-7222,Frequency Analysis Software BZ-7223, Logging Software BZ-7224,

Enhanced Logging Software BZ-7225 and Sound Recording Option BZ-7226

Fig. 1 Key features of Hand-held Analyzer Types 2250 and 2270

120261/2

Power Switch

Windscreen Sensor

Windscreen

Navigation Pushbuttons:• Up/down, left/right arrow keys

Microphone/Preamplifier Stage:• Falcon™ Range ½″ microphone and

microphone preamplifier stage• The microphone preamplifier stage is

able to drive an extension cable of up to 100 m, a valuable feature when a measurement requires remote location of the microphone

Battery Charge:• 8 – 24 V DC input from a universal

mains adapter or external batteries

Output:• Output socket for software-

determined signals

Display:• Touch sensitive colour

screen with backlight

USB 2.0 (On-the-Go) Micro-AB socket:• Allows data transfer and remote control of

the analyzer directly with a host PC

High-speed LAN Interface

Trigger/Tacho Input

Slots for Secure Digital (SD) memory cards

Microphone for commentary

Battery Charge Indicator LED

Back Erase/Exclude Pushbutton:• Allows you to erase the last

5 s of data• Mark logged data with an

exclude marker

Start/Pause Pushbutton:• Press to start a measurement• Press to pause a measurement

Store Pushbutton:• Store measurement

results

Battery Compartment for rechargeable battery pack

Reset button

3.5 mm Stereo Socket for Headphones:• For reviewing recorded comments or

listening to measurement signals Input Channels 1 and 2 (2-channel option only available with Type 2270):• For AC/DC or CCLD signals. Can be used

when analysing electrical signals

Mounting thread

Red, yellow, green Status Indicators

Thread for tripod/wrist strap

Cover for protecting connectors

Non-slip surfaces for safe grip

Event Pushbutton:• For marking events

Accept Pushbutton:• Accepts any changes made

to parameters/setups

Commentary Pushbutton:• Allows you to attach recorded

messages to measurements

Reset Measurement Pushbutton:• Allows you to reset the

measurement buffers

Stylus (stored)

G4 indicates hardware version 4

USB 2.0 Standard A socket• For connection to USB devices

Camera (only available with Type 2270)

Wireless USB-A Adapter UL-1050

Optional ApplicationsA variety of applications that can be used in any combination can be purchased when you need them andare delivered as easily installed licenses. The applications described in this product data are:• Logging Software BZ-7224 – freely select parameters to log at periods from 1 s to 24 h. Running together

with SLM Software, all broadband parameters can be logged. If Frequency Analysis Software is also

3

PRODUCT DATA
Outdoor Microphones � Types 4952 and 4952-A
Outdoor Microphones Types 4952 and 4952-A aresuitable for long periods of unattended outdoor use.Their exterior housing is made of a chemical resistantpolymer that provides extremely high protection againstcorrosion.

The microphones� long-term stability guaranteesunattended outdoor use for up to a year without anysignificant change in sensitivity.

Frequency response is precisely controlled, such that,with the appropriate linearization, IEC 61672 Class 1requirements are fulfilled.

The windscreen upper part and bird spike can beremoved in seconds, enabling easy acousticalcalibration of the microphone.

Low weight makes this an ideal choice for portable use.

USES AND FEATURES

USES� Unattended outdoor installations� Measurements in all weather conditions� Microphone for noise monitoring systems� IEC 61672 Class 1 compliant outdoor sound

measurement� Complaint investigations

FEATURES� Easy �click-on� and �click-off� assembly and

disassembly� Easy and true acoustical calibration� CIC for on-site verification� Measurement to EN/IEC 61672 Class 1 and

ANSI S 1.40 �1984� Sensitivity 31,6 mV/Pa� Wide dynamic range� Built-in preamplifier with TEDS � IEEE P1451.4� Protected against the effects of wind, rain and

perching birds� Useable for both 0° and 90° angle of incidence

PRODUCT DATA
Outdoor Microphone Unit � Type 4198
Outdoor Microphone Kit � UA-1404

Type 4198 is a weather-proof microphone andpreamplifier assembly that meets IEC 61672 class 1 andANSI S1.4 Type 2 specifications. Use it in any situationwhere you must make precise outdoor soundmeasurements.

Type 4198 is even suitable for semi-permanent,unsupervised outdoor installation.

Outdoor Microphone Kit UA-1404 includes all of theprotective features of Type 4198, but without themicrophone and preamplifier. It enables you to weather-proof your Falcon� range microphones andpreamplifiers. It can also protect the microphones andpreamplifiers for Sound Level Meters Types 2236, 2250and 2260. All recommended combinations fulfilIEC 61672 class 1 and ANSI S1.4 Type 2 specifications(see configuration diagram, Fig. 7).

Both the unit and the kit enable you to takemeasurements that are protected against the effects ofwind, rain, and perching birds.

USES AND FEATURES

USES� IEC 61672 class 1 compliant outdoor sound

measurements in all weather conditions� Unattended, semi-permanent outdoor installations� Noise control� Complaint investigations� Research

FEATURES� Protected against the effects of wind, rain, and

perching birds� Easy acoustic calibration

� Detailed free-field corrections on mini CD to obtain flat response in all sound fields

� Falcon� range product with a 3-year guarantee� UA-1404 usable with existing Falcon� range

microphones and preamplifiers

TYPE 4198 ALSO FEATURES� Built-in Type 1 microphone and preamplifier� Wide dynamic range: 15.2 dB(A) to 146 dB� Remote calibration monitoring using CIC� Individual microphone calibration charts � Easy connection to standard measurement

microphone equipment

Product Data

Brüel & Kjær B K

Microsoft is a registered trademark and Win-dows is a trademark of Microsoft Corporation

The FalconÓ Range 1/2± Microphones — Types 4188 to 4193

USES:

❍ For sound level meters

❍ In noise measurement systems satisfying IEC and ANSI standards

❍ Transport-noise measurements

❍ Architectural acoustics

❍ Electro-acoustics

FEATURES:

❍ Choice of free or pressure-field frequency response

❍ Choice of pre- or external polarization

❍ Wide dynamic ranges typically from 14.2 dB(A) to 146 dB and 20 dB(A) to 162 dB (3% distortion limit)

❍ Very wide operating temperature range and low ambient-temperature coefficient

❍ Individual calibration charts

❍ Individual data disks for Types 4189 to 4193 for use with MicrosoftÑ WindowsÓ

❍ Withstand IEC 68-2-32 1 m drop test (<0.1 dB sensitivity change) and industrial environments

❍ FalconÓ Range product with a three-year guarantee

Introduction

The six 1/2± condenser microphonesof Brüel & Kjær’s FalconÓ Range cov-er, between them, a very wide rangeof needs and applications.

They are the culmination of 40years of leadership in top quality con-denser microphones for precisionacoustic measurements. These Fal-conÓ Range microphones will meetyour demands whether they be incomplying with ANSI or IEC stand-ards or in acoustic research.

Robust and StableThey are robust and suffer less thana ±0.1 dB change in sensitivity when

subjected to an IEC 68-2-32 1 m droptest onto a hard wooden block. Theyare made of carefully selected mate-rials and alloys to ensure excellentstability and are virtually unaffectedby industrial and similarly hostileenvironments. Furthermore, eachFalconÓ Range microphone comeswith an extended guarantee period ofthree years.

During manufacture, each micro-phone is artificially aged at a hightemperature to ensure good long-term stability.

No ecologically damaging materialsare used in the manufacture andpackaging of these microphones. The

Types 4189 to 4193 are packaged asshown above.

Selecting a Microphone for Your Needs

To make sure you select the right mi-crophone to match your needs, youwill probably have to consider one ormore of the following:

Standards (IEC or ANSI)Free- or pressure-field responseFrequency rangePolarization (0 V or 200 V)

The FalconÓ Range microphones aresix new high-quality, 1/2± diameter pre-cision condenser microphones. Theycover requirements for free-, random-and pressure-field measurements.They are the latest in Brüel & Kjær’srange of precision microphones for ac-curate and reliable electro-acoustic,IEC or ANSI sound measurements.Their corrosion resistance has been im-proved and their temperature rangehas been extended. They are the resultof a new and robust design which en-sures greater reliability and accuracy.

Product Data

Brüel & Kjær B K

Sound Level Calibrator — Type 4231

USES:

❍ Calibration of sound level meters and other sound measurement equipment

FEATURES:

❍ Conforms to IEC 942 (1988) Class 1 and ANSI S1.40–1984

❍ Robust pocket-size design with highly stable level and frequency

❍ Calibration accuracy °0.2 dB

❍ 94 dB SPL, or 114 dB SPL for calibration in noisy environments

❍ Extremely small influence of static pressure

❍ Sound pressure independent of microphone equivalent volume

❍ 1 kHz calibration frequency for correct calibration level independent of weighting networks

❍ Fits Brüel & Kjær 1± and 1/2± microphones (1/4± and1/8± microphones with adaptor)

❍ Switches off automatically when removed from the microphone

The Sound Level Calibrator Type4231 is a pocket-sized, battery oper-ated sound source for quick and di-rect calibration of sound level metersand other sound measuring systems.It fits Brüel & Kjær 1± and 1/2± micro-phones and, with adaptors, it can beused for 1/4± and 1/8± microphones aswell.

The calibration frequency is1000 Hz (the reference frequency forthe standardized internationalweighting networks), so the same cal-ibration value is obtained for allweighting networks (A, B, C, D andLinear). The calibration pressure of94 °0.2 dB re 20mPa is equal to 1 Paor 1 N/m2. The +20 dB level step gives114 dB SPL which is convenient forcalibration in noisy environments.

The design of the 4231 is based ona feed-back arrangement to ensure ahighly stable sound pressure leveland ease of use. The feed-back loopuses a condenser microphone (seeFig. 1), which is specially developedfor this purpose. This microphone isoptimized to have extremely high sta-

bility and independence of variationsin static pressure and temperaturearound the 1 kHz calibration frequen-cy. The result of this is a user-friendlycalibrator where exact fitting of themicrophone is non critical and the ef-fects of changes in temperature andstatic pressure are negligible.

The calibrator gives a continuoussound pressure level when fitted on

a microphone (see Fig. 2) and activat-ed. The sensitivity of the sound meas-uring equipment can then beadjusted until it indicates the correctsound pressure level. The calibratoris automatically switched off whenremoved from the microphone.

A leather protecting case, whichdoes not need to be removed to usethe calibrator, is supplied.

The Sound Level Calibrator Type4231 is a handy, portable sound sourcefor calibration of sound level metersand other sound measurement equip-ment. The calibrator is very robust andstable and conforms to IEC 942 Class1 and ANSI S1.40-1984.

A3 Instrument Calibration Certificates

West Caldwell Calibration Laboratories Inc.

Certificate of Calibration for

HAND-HELD ANALYZER Manufactured by: Model No: Serial No:

BRUEL & KJAER 2250 3024185

Calibration Recall No: 28891

Customer:

Companv: Address:

Submitted By:

MICHAEL THERIAULT

MICHAEL THERIAULT ACOUSTICS INC 401 CUMBERLAND A VE. PORTLAND ME 04101-287

The subject instrument was calibrated to the indicated specification using standards traceable to the National Institute of Standards and Technology or to accepted values of natural physical constants. This document certifies that the instrument met the following specification upon its return to the submitter.

West Caldwell Calibration Laboratories Procedure No. 2250 BRUE

Upon receipt for Calibration, the instrument was found to be:

Within ( X )

tolerance of the indicated specification. See attached Report of Calibration. The information supplied relates to the calibrated item listed above. West Caldwell Calibration Laboratories' calibration control system meets the requirements, ISO 10012-1 MIL-STD-45662A, ANSI/NCSL Z540-l, IEC Guide 25, ISO 9001:2008 and ISO 17025.

Note: With this Certificate , Report of Calibration is included. Approved by:

Calibration Date: 04-Jun-18 Felix Christopher (QA Mgr.)

Certificate No: 28891 -2

QA Doc. #1051 Rev. 2.0 10/1/01 Certificate Page 1 of 1 1S0/IEC 17025:2005

Bri.iel & Kjmr North America Inc.

The Briiel & Kjrer Calibration Laboratory 3079 Premiere Parkway Suite 120

Duluth, GA 30097 Telephone: 770/209-6907

CERTIFICATE OF CALIBRATION Certificate No: CAS-314967-W8V2F7-301

Fax: 770/447-4033 Web site address·. http://www.bkhome.com

CALIBRATION OF: Sound Level Meter:

Software version:

CLIENT:

Brtiel & Kj~r

BZ7222 Version 4.7.4

Michael Theriault Acoustics, Inc.

401 Cumberland A venue

Portland, ME 04101

CALIBRATION CONDITIONS: Preconditioning: 4 hours at 23 ± 3 °C

2250

Environment conditions See actual values in Environmental Condition sections

SPECIFICATIONS:

Serial No: 3024494

Page 1 of9

This document certifies that the instrument as listed under "Model/Serial Number" has been calibrated and unless otherwise indicated under "Final Data", meets acceptance criteria as prescribed by the referenced Procedure. The reported expanded uncertainty is based on the standard uncertainty multiplied by a coverage factor k = 2 providing a level of confidence of approximately 95%. Statements of compliance, where applicable, are based on calibration results falling within specified criteria with no reduction by the uncertainty of the measurement. The calibration of the listed instrumentation, was accomplished using a test system which conforms with the requirements of ISO/IEC 17025, ANSI/NCSL Z540-l, and ISO 10012-1. For "as received" and/or "final" data, see the attached page(s). Items marked with one asterisk(*) are not covered by the scope of the current A2LA accreditation This Certificate and attached data pages shall not be reproduced, except in full, without the written approval of the Brtiel and Kj~r Calibration Laboratory-Duluth, GA. Results relate only to the items tested. This instrument has been calibrated using Measurement Standards with values traceable to the National Institute of Standards and Technology, National Measurement Institutes or derived from natural physical constants.

PROCEDURE: Brue! and Kj~r Model 3630 Sound Level Meter Calibration System Software 7763 Version 7.1 - DB: 7.10 Test Collection 2250-4189.

RESULTS: As Received Condition _ X _ Received in good condition _ Damaged - See attached report

As Received Data _ X _ Within acceptance criteria _ Outside acceptance criteria

_ Inoperative Data not taken

Date of Calibration: 05. Jul 2018

Kyle Chancey

Calibration Technician

Final Data _ X _ Within acceptance criteria

Limited test - See attached details

Certificate issued: 05. Jul 2018

Quality Representative

The Brüel & Kjær Calibration Laboratory 3079 Premiere Parkway Suite 120

Duluth, GA 30097 Telephone: 770/209-6907

Fax: 770/447-4033 Web site address: http://www.bkhome.com

Calibration Certificate Number 1568.01

CERTIFICATE OF CALIBRATION

Certificate No: CAS-284986-B6H9K1-102 Page 1 of 11

CALIBRATION OF: Sound Level Meter: Brüel & Kjær 2250 Serial No: 3024219 Microphone: Brüel & Kjær 4189 Serial No: 3130859 Preamplifier: Brüel & Kjær ZC-0032 Serial No: 27105 Software version: BZ7222 Version 4.7.4

CLIENT: Bruel & Kjaer N. A. Demo

3079 Premiere Parkway Suite 120

Duluth, GA 30097

CALIBRATION CONDITIONS: Preconditioning: 4 hours at 23 ± 3 °C Environment conditions See actual values in Environmental Condition sections

SPECIFICATIONS: This document certifies that the instrument as listed under "Model/Serial Number" has been calibrated and unless otherwise indicated under "Final Data", meets acceptance criteria as prescribed by the referenced Procedure. The reported expanded uncertainty is based on the standard uncertainty multiplied by a coverage factor k = 2 providing a level of confidence of approximately 95%. Statements of compliance, where applicable, are based on calibration results falling within specified criteria with no reduction by the uncertainty of the measurement. The calibration of the listed instrumentation, was accomplished using a test system which conforms with the requirements of ISO/IEC 17025, ANSI/NCSL Z540-1, and ISO 10012-1. For "as received" and/or "final" data, see the attached page(s). Items marked with one asterisk (*) are not covered by the scope of the current A2LA accreditation This Certificate and attached data pages shall not be reproduced, except in full, without the written approval of the Brüel and Kjær Calibration Laboratory-Duluth, GA. Results relate only to the items tested. This instrument has been calibrated using Measurement Standards with values traceable to the National Institute of Standards and Technology, National Measurement Institutes or derived from natural physical constants.

PROCEDURE: Brüel and Kjær Model 3630 Sound Level Meter Calibration System Software 7763 Version 7.1 - DB: 7.10 Test Collection 2250-4189.

RESULTS: As Received Condition As Received Data Final Data _X_ Received in good condition _X_ Within acceptance criteria _X_ Within acceptance criteria ___ Damaged - See attached report ___ Outside acceptance criteria ___ Limited test - See attached details ___ Inoperative ___ Data not taken

Date of Calibration: 27 Feb. 2018 Certificate issued: 28 Feb. 2018

John Avitabile

Calibration Technician Quality Representative



MICROPHONE Manufactured by: BRUEL & KJAER

4189 Model No: Serial No: 1783679 Calibration Recall No: 28891

Customer:

Company: Address:

Submitted By:

MICHAEL THERIAULT


The subject instrument was calibrated to the indicated specification using standards traceable to the National Institute of Standards and Technology or to accepted values of natural physical constants. This document certifies that the instrument met the following specification upon its return to the submitter. ·



Within ( X )

tolerance of the indicated specification. See attached Report of Calibration. The information supplied relates to the calibrated item listed above. West Caldwell Calibration Laboratories' calibration control system meets the requirements, ISO 10012-1 MIL-STD-45662A, ANSI/NCSL Z540-1, IEC Guide 25, ISO 9001:2008 and ISO 17025.

Note: With this Certificate, Report of Calibration is included. Approved by:

Calibration Date: 05-Jun-18 Felix Christopher (QA Mgr.)


QA Doc. #1051 Rev. 2.0 10/1/01 Certificate Page 1 of 1 1S0/IEC 17025:2005



MICROPHONE Manufactured by: Model No: Serial No: Calibration Recall No:

BRUEL & KJAER 4189 2662889 28891

Submitted By:

Customer: MICHAEL THERIAULT

Company: Address:





Within ( X)


Note: With this Certificate, Report of Calibration is included.

Calibration Date: 05-Jun-18


QA Doc. #1051 Rev. 2.0 10/1/01 Certificate Page 1 of 1

West Caldwell Calibration

uncompromised calibration Laboratories, Inc. 1575 State Route 96, Victor, NY 14564, U.S.A.

Approved by:

Felix Christopher (QA Mgr.)

ISO/ IEC 17025:2005



MICROPHONE Manufactured by: Model No: Serial No: Calibration Recall No:

BRUEL & KJAER 4189 2199741 28891

Submitted By:

Customer: MICHAEL THERIAULT

Company: Address:





Within ( X)



Calibration Date: 05-Jun-18


QA Doc. #1051 Rev. 2.0 10/1/01 Certificate Page 1 of 1


uncompromised calibration Laboratories, Inc. 1575 State Route 96, Victor, NY 14564, U.S.A.

Approved by:


ISO/I EC 17025:2005



MICROPHONE Manufactured by: BRUEL & KJAER

4952 Model No: Serial No: 2653065 Calibration Recall No: 28696

Customer:

Company: Address:

Submitted By:

MICHAEL THERIAULT

MICHAEL THERIAULT ACOUSTICS, INC. 401 CUMBERLAND A VE PORTLAND ME 04101-287




Within ( x )

tolerance of the indicated specification. See attached Report of Calibration. The information supplied relates to the calibrated item listed above. West Caldwell Calibration Laboratories' calibration control system meets the requirements, ISO 10012-1 MIL-STD-45662A, ANSl/NCSL Z540-1, IEC Guide 25, ISO 9001:2008 and ISO 17025.

Note: With this Certificate, Report of Calibration is included. Approved by:

Calibration Date: 02-Apr-18 Felix Christopher (QA Mgr.)

Certificate No: 28696 - 1

QA Doc. #1 051 Rev. 2.0 10/1/01 Certificate Page 1 of 1 ISO/IEC 17025:2005

Inc.



ACOUSTICAL CALIBRATOR Manufactured by: Model No: Serial No: Calibration Recall No:

BRUEL & KJAER 4231 1882710 28891

Submitted By:

Customer:

Comoanv: Address:

MICHAEL THERIAULT





Within ( X )



Calibration Date:

Certificate No:

QA Doc. #1051 Rev. 2.0 10/1/01

04-Jun-18

28891 -9

Certificate Page 1 of 1


Laboratories, lnG.

Approved by:


1S0/IEC 17025:2005

A4 Noise Level Data and Data Reductions

Location Start Time End Time Activity LAeq(dB)

LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/4/2018 2:00:00 AM 11/4/2018 4:00:00 AM 100% 56.9 58.2 56.8 55.4

NSA 2 11/4/2018 2:00:00 AM 11/4/2018 4:00:00 AM 100% 52.7 54.0 52.4 51.0

NSA 3 11/4/2018 2:00:00 AM 11/4/2018 4:00:00 AM 100% 42.5 44.3 42.0 40.4

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/6/2018 2:00:00 AM 11/6/2018 4:00:00 AM 100% 48.0 48.0 46.8 45.9

NSA 2 11/6/2018 2:00:00 AM 11/6/2018 4:00:00 AM 100% 44.4 46.0 42.4 41.0

NSA 3 11/6/2018 2:00:00 AM 11/6/2018 4:00:00 AM 100% 32.1 34.1 31.2 29.5

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/7/2018 2:00:00 AM 11/7/2018 4:00:00 AM 100% 54.4 55.6 54.1 52.8

NSA 2 11/7/2018 2:00:00 AM 11/7/2018 4:00:00 AM 100% 45.6 46.9 43.9 42.7

NSA 3 11/7/2018 2:00:00 AM 11/7/2018 4:00:00 AM 100% 44.9 47.1 44.1 42.0

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/8/2018 2:00:00 AM 11/8/2018 4:00:00 AM 100% 56.8 58.1 56.5 55.3

NSA 2 11/8/2018 2:00:00 AM 11/8/2018 4:00:00 AM 100% 51.8 53.6 51.2 49.4

NSA 3 11/8/2018 2:00:00 AM 11/8/2018 4:00:00 AM 100% 46.2 49.7 44.8 40.6

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/9/2018 2:00:00 AM 11/9/2018 4:00:00 AM 100% 55.4 56.8 55.2 53.9

NSA 2 11/9/2018 2:00:00 AM 11/9/2018 4:00:00 AM 100% 52.3 53.5 52.0 50.8

NSA 3 11/9/2018 2:00:00 AM 11/9/2018 4:00:00 AM 100% 41.9 43.6 41.3 39.8

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/10/2018 2:00:00 AM 11/10/2018 4:00:00 AM 100% 56.2 57.6 56.0 54.5

NSA 2 11/10/2018 2:00:00 AM 11/10/2018 4:00:00 AM 100% 47.1 48.1 46.4 45.2

NSA 3 11/10/2018 2:00:00 AM 11/10/2018 4:00:00 AM 100% 44.3 46.0 43.6 42.1

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/11/2018 2:00:00 AM 11/11/2018 4:00:00 AM 100% 56.7 57.9 56.6 55.4

NSA 2 11/11/2018 2:00:00 AM 11/11/2018 4:00:00 AM 100% 46.1 47.4 45.6 44.3

NSA 3 11/11/2018 2:00:00 AM 11/11/2018 4:00:00 AM 100% 44.7 46.6 44.2 42.4

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/12/2018 2:00:00 AM 11/12/2018 4:00:00 AM 100% 48.9 50.3 48.6 47.3

NSA 2 11/12/2018 2:00:00 AM 11/12/2018 4:00:00 AM 100% 43.6 45.5 42.4 41.4

NSA 3 11/12/2018 2:00:00 AM 11/12/2018 4:00:00 AM 100% 36.2 38.4 34.2 31.4

11/12/18 ‐ NSA 1 ‐ SEE EXCLUSION ANALYSIS (2 am to 4 am) 48.7

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/14/2018 2:00:00 AM 11/14/2018 4:00:00 AM 100% 57.3 58.6 57.1 55.8

NSA 2 11/14/2018 2:00:00 AM 11/14/2018 4:00:00 AM 100% 47.8 49.2 47.0 45.4

NSA 3 11/14/2018 2:00:00 AM 11/14/2018 4:00:00 AM 100% 51.1 54.8 49.3 43.9

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/15/2018 2:00:00 AM 11/15/2018 4:00:00 AM 100% 56.5 57.8 56.2 54.6

NSA 2 11/15/2018 2:00:00 AM 11/15/2018 4:00:00 AM 100% 53.0 54.3 52.5 51.2

NSA 3 11/15/2018 2:00:00 AM 11/15/2018 4:00:00 AM 100% 45.1 47.4 44.2 42.2

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/17/2018 2:00:00 AM 11/17/2018 4:00:00 AM 100% 58.2 59.5 58.0 56.7

NSA 2 11/17/2018 2:00:00 AM 11/17/2018 4:00:00 AM 100% 49.1 50.2 48.7 47.8

NSA 3 11/17/2018 2:00:00 AM 11/17/2018 4:00:00 AM 100% 42.6 44.3 42.0 40.4

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/18/2018 2:00:00 AM 11/18/2018 4:00:00 AM 100% 52.4 54.6 51.7 50.4

NSA 2 11/18/2018 2:00:00 AM 11/18/2018 4:00:00 AM 100% 50.0 51.5 49.4 47.9

NSA 3 11/18/2018 2:00:00 AM 11/18/2018 4:00:00 AM 100% 36.0 37.0 33.0 31.7

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/19/2018 2:00:00 AM 11/19/2018 4:00:00 AM 100% 48.1 49.4 47.6 46.6

NSA 2 11/19/2018 2:00:00 AM 11/19/2018 4:00:00 AM 100% 42.9 45.4 39.4 38.2

NSA 3 11/19/2018 2:00:00 AM 11/19/2018 4:00:00 AM 100% 47.5 49.3 47.4 43.8

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/20/2018 2:00:00 AM 11/20/2018 4:00:00 AM 100% 48.7 49.7 48.2 47.0

NSA 2 11/20/2018 2:00:00 AM 11/20/2018 4:00:00 AM 100% 45.0 47.4 42.6 40.2

NSA 3 11/20/2018 2:00:00 AM 11/20/2018 4:00:00 AM 100% 41.9 43.3 41.4 40.0

11/20/18 ‐ NSA 1 ‐ SEE EXCLUSION ANALYSIS (2 am to 4 am) 48.5

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/22/2018 2:00:00 AM 11/22/2018 4:00:00 AM 100% 55.4 57.1 54.9 53.5

NSA 2 11/22/2018 2:00:00 AM 11/22/2018 4:00:00 AM 100% 46.9 49.8 44.4 42.5

NSA 3 11/22/2018 2:00:00 AM 11/22/2018 4:00:00 AM 100% 47.7 52.1 42.4 40.0

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/23/2018 2:00:00 AM 11/23/2018 4:00:00 AM 100% 51.2 52.6 50.9 49.4

NSA 2 11/23/2018 2:00:00 AM 11/23/2018 4:00:00 AM 100% 48.9 50.1 48.8 47.5

NSA 3 11/23/2018 2:00:00 AM 11/23/2018 4:00:00 AM 100% 36.0 37.5 35.6 34.1

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/24/2018 2:00:00 AM 11/24/2018 4:00:00 AM 100% 53.5 56.3 52.2 50.7

NSA 2 11/24/2018 2:00:00 AM 11/24/2018 4:00:00 AM 100% 52.1 53.4 51.8 49.8

NSA 3 11/24/2018 2:00:00 AM 11/24/2018 4:00:00 AM 100% 36.5 37.9 36.3 34.7

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/25/2018 2:00:00 AM 11/25/2018 4:00:00 AM 100% 56.0 57.4 55.8 54.3

NSA 2 11/25/2018 2:00:00 AM 11/25/2018 4:00:00 AM 100% 45.5 47.4 44.2 42.7

NSA 3 11/25/2018 2:00:00 AM 11/25/2018 4:00:00 AM 100% 48.8 50.7 48.1 46.3

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/26/2018 2:00:00 AM 11/26/2018 4:00:00 AM 100% 46.9 47.4 45.9 44.7

NSA 2 11/26/2018 2:00:00 AM 11/26/2018 4:00:00 AM 100% 44.3 45.6 41.5 40.1

NSA 3 11/26/2018 2:00:00 AM 11/26/2018 4:00:00 AM 100% 38.1 40.9 37.2 35.3

Overall Data


LA10(dB)

LA50(dB)

LA90(dB)

NSA 1 11/27/2018 2:00:00 AM 11/27/2018 4:00:00 AM 100% 51.0 51.8 50.0 48.9

NSA 2 11/27/2018 2:00:00 AM 11/27/2018 4:00:00 AM 100% 44.4 46.4 40.3 38.8

NSA 3 11/27/2018 2:00:00 AM 11/27/2018 4:00:00 AM 100% 42.1 43.8 41.7 39.9

Theri

Text Box

Exclusions 7 through 12 were due to vehicle pass-bys.

Theri

Text Box

Exclusions 7 through 10 were due to vehicle pass-bys.

A5 Statistical Levels

Statistical Sound Level Analysis

70

Truck

60

, dB

A)

CarPass-by

Pass-by

L10

50

evel

(A-w

eigh

ted

Leq

40

Soun

d L

e

L50

L90

20

30L90

201 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59

Time (Seconds)

EXAMPLE STATISTICAL ANALYSIS

COVE POINT LIQUEFACTION FACILITY LUSBY, MARYLAND

FIGURE A1 PROJECT NO. 1992

Page | 1

Statistical Levels. Environmental noise levels constantly change over time and at any given moment are often combinations of natural sounds from birds, insects or tree rustle; noise from local or distant traffic; and/or from industrial, commercial or residential activities. To separate low‐level (amplitude), constant (temporal) sources of noise (the din of distant traffic, for example) from louder, short‐duration events (such as aircraft flyovers or vehicle passbys) statistical or ‘exceedance’ measurements are often used. These measures help describe the ‘average’ level of noise, as well as the range of highs to lows for any given measurement period. As shown in Figure A1: L10 (‘L‐Ten’) is the level exceeded 10% of the time, (i.e., levels are higher than this

value only 10% of the measurement time.) The L10 typically represents the loudest and

shortest noise events occurring in the environment, such as car and truck passbys or aircraft flyovers.

L50 (‘L‐Fifty’) is the sound level exceeded 50% of the time. Levels will be above and

below this value exactly one‐half of the measurement time, and therefore the L50 is

sometimes referred to as the ‘median’ sound level. L90 (‘L‐Ninety’) is the sound level exceeded 90% of the time and is often called

the ‘background’ sound level. Levels are higher than this value most of the measurement time, so the L90 represents the relatively low‐level, constant noise

present in the environment, discernable only when intermittent or varying noises such as birdcalls, car passbys or aircraft flyovers cease.

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