water committee meeting
TRANSCRIPT
Regional Service Through Unity… Meeting our Region’s Needs Today and Tomorrow
WATER COMMITTEE MEETING
June 27, 2019
AgendaAGENDA
Opening Remarks
A. Chairman/Executive Director/Committee Champion StatusReport concerning legislation and regulatory matters,budgets, current projects and ongoing programs of theDistrict including the Regional Water System, WatershedProtection, and Water Conservation
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AgendaAGENDA
Action Items
A. Consider approval of Water Committee meeting minutes –May 30, 2019
Recommend approval of Water Committee meeting minutes
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Action Items
B. Consider recommendation authorizing execution of propertyacquisition program with a budget of $1,423,500 and adoptionof Resolution No. 19-32 authorizing the use of eminentdomain to acquire property for the Shiloh System GroundStorage Tank, Project No. 101-0472-17(Please refer to Administrative Memorandum No. 5417)
AGENDA
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SHILOH SYSTEM GROUND STORAGE TANK
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• 4.5 million gallon ground storage tank and meter vault
• Located north of PGBT, between Custer Road and Independence Pkwy
• Includes approximately 3,000 LF of 30-inch pipe to connect to nearest point in transmission system
• Location within the system and elevation are important design factors
• Maintains minimum required pressure (5 psi) in the NTMWD transmission system under all dynamic conditions
In-Service In Construction In DesignNorth System 2South System 1 1East System 1
RECOMMENDATION
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Action Items
C. Consider recommendation authorizing award of constructioncontract to MYCON General Contractors, Inc., in the amountof $11,963,090 to construct the Wylie Water Treatment PlantWater Systems Operations Center, Project No. 101-0352-14(Please refer to Administrative Memorandum No. 5418)
AGENDA
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WATER SYSTEMS OPERATIONS CENTER
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• Original construction contract with Ratcliff Construction was terminated due to permitting delays
• Project was re-bid with modifications to address comments from local citizens for site screening
• Revised OPCC - $11.42M
• Three bids: $11.96M, $12.25M, $12.98M (within 8% spread)
• Grouping of bids suggests common understanding of scope
• Low bid recommended as reflective of market conditions
RECOMMENDATION
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Action Items
D. Consider recommendation authorizing award of constructioncontract to Prime Controls, LP, in the amount of $3,575,305 onProject No. 101-0534-19, Wylie Water Treatment Plants III andIV Filter Performance Improvements(Please refer to Administrative Memorandum No. 5419)
AGENDA
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WYLIE WATER TREATMENT PLANTS III AND IV FILTER PERFORMANCE IMPROVEMENTS
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• Part of response to Corrective Action Plan issued by TCEQ in 2016
• Involves filter performance enhancements for WTP’s III and IV• Upgrade and add turbidimeters for consistent performance
• Replace/level sedimentation basin weir plates to mitigate short-circuiting; repair trough coatings
• Add turbidity sample system and pH monitoring
• Upgrade programmable logic controllers and backwash control programming
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• OPCC - $3.088M
• Two bids: $3.57M, $3.62M (within 1.5% spread)
• Close grouping of bids indicates clear understanding of scope
• Non-programming elements of scope (mounting, wiring, weirs, coatings) are limited, so their subcontracting is not widely attractive
• Staff recommends the bids as reflective of best available pricing
WYLIE WATER TREATMENT PLANTS III AND IV FILTER PERFORMANCE IMPROVEMENTS
RECOMMENDATION
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Action Items
E. Consider recommendation authorizing ratification of actionsof Executive Director for additional engineering services withCarollo Engineers, Inc., in the amount of $231,041 on ProjectNo. 101-0387-15, Wylie Water Treatment Plant IV 70 MGDExpansion(Please refer to Administrative Memorandum No. 5420)
AGENDA
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RECOMMENDATION
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Discussion Items
A. FY19 amended and FY20 preliminary budget briefing
AGENDA
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BUDGET SUMMARY
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REGIONAL WATER SYSTEMExpenditures by Category
$5
$55
$105
$155
$205
$255
Personnel Operating CapitalFY19 Bdgt $51 $87 $222FY19 Amnd $51 $83 $222FY20 Bdgt $13 $116 $227
Mill
ions
$2 M Chemical<$6 M> Power
<$2 M> Wtr Purchases$2 M PUC
$1 M Richardson PL 33% Incr
<$12 M> CIP Fund Decr$17 M Debt Incr
75%Decr
2% <$19 M> Support Services
$47 M Allocations
<$40 M > Support Services$1.5 M Personnel
0%
5%Decr
0%
Preliminary
REGIONAL WATER SYSTEM
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• FY19 Significant Itemso Amended Budget Based on 99.87 BG compared to 103.27 BG for WY18o Est $7 M Net Rebate
o <$7 M> Variable Costso PUC, Validation Rate Litigation awarded in FY19
o $1.7 M Awarded – (not including a possible $275,000 in June)o $1.6 M Spent
o City of Richardsono $1.3 M Forensic Analysis
RWS STRATEGIC FINANCIAL PLAN
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2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029Current $2.92 $2.99 $3.14 $3.33 $3.50 $3.64 $3.79 $3.94 $4.10 $4.26 $4.43Curr Incr 2% 5% 6% 5% 4% 4% 4% 4% 4% 4%Prior $2.92 $3.12 $3.31 $3.48 $3.62 $3.76 $3.91 $4.07 $4.23 $4.40 $4.58Prior Incr 7% 6% 5% 4% 4% 4% 4% 4% 4% 4%
$2.50
$3.00
$3.50
$4.00
$4.50
$5.00
NTMWD Regional Water SystemMember Cost Per 1,000 Gallons PRELIMINARY
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REGIONAL WATER SYSTEMTotal Expenditures
$300$310$320$330$340$350$360$370
RWSFY19 Bdgt $361FY19 Amnd $357FY20 Bdgt $356
Mill
ions
1.1% Decr 1.4%
Decr
REGIONAL WATER SYSTEM MEMBER CITY RATE
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$1.58
$ 0.68
$0.46
$1.60
$ 0.65
$0.46
10.1%
Capital Improvement Fund$36 M
14.6%
Variable O&M$52 M
53.4%
Debt Issuance
$190 M
$2.99 Water Rate for FY20 Budget of $356 M
$1.60
$ 0.65
$0.44
$0.30
Chemical $31 MPower $17 M
Water Purchases $4 M
SWIFT $101Non SWIFT $139
21.9%
Fixed O&M$78 M
Personnel $13 MSupplies $3 MServices $60 M
Other $2 M(Other includes: Escrow, Capital
Outlay & Special Projects
REGIONAL WATER SYSTEM
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• FY20 Budgeto $5 M Increase to Capital.
o $15 M Increase in debt service for ’20 bonds (Full Year) o $2 M Increase in existing debt and required balance of debt fundo <$12 M> Decrease in transfer to Capital Improvements Fund
o <$2 M> Support Service Fund Impacto <$63 M> Support service expenses removed from RWSo $14 M Support services revenues removed from RWSo $34 M Indirect Support services expenses added to RWS O&Mo $13 M Direct Support services expenses added to RWS O&M
Discussion Items
B. Bois d’Arc Lake Shoreline Management Plan update
AGENDA
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- Staff level workshops
- SMP will develop guidelines• For area adjacent to BDL (on District owned lands)• Areas over BDL (over water)
- Schedule- on target to adopt in early 2020
- Preliminary outreach• Fannin County Representatives• USACE Tulsa District
- Regular updates to Fannin County beginning in July
OVERVIEW
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Water and Land Recreation Opportunity Spectrum (WALROS)
• Tool Developed by U.S. Bureau ofReclamation
• Establishes methodology for determining Boating Density and Capacity
• Bois d’Arc Lake• Density = 35 Acres per Boat• Capacity = 300 Boats at One Time
BOATING DENSITY & CAPACITY
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Consistent with Comprehensive PlanWill impact the number of docks and marina slips (yet to be established)
BOATING DENSITY & CAPACITY
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100acres/boat
50acres/boat
35acres/boat
20acres/boat
10acres/boat
8acres/boat
BOATING CAPACITY
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Lake Usable Acres16,637 Normal Pool Surface Acres - 6,119 Acres encumbered by trees = 10, 518 Usable Acres
Carrying Capacity CalculationUsable Acres/Density = Carrying Capacity
10,518 acres / 35 acres/boat= 300 boats at one time
This means target boating capacity will be exceeded when there are more than 300 boats on the water at
one time
SHORELINE SUITABILITY
DRAFT
Usable Shoreline Criteria:
• Minimum 3ftdepth at 120ft from shoreline
• No standing timber or other obstacles
• Removal of timber• Removal of material in the reservoir footprint
• Any placement of material in the footprint will require a 404 permit
MEETING WITH USACE TULSA DISTRICT
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Any activity in the reservoir footprint OR 100-yr flood plain will requireDistrict approvalUSACE suggested bank stabilization be required for any landownerapproved to conduct these activities
DOCK TYPES
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Comprehensive Plan – Fixed docks only
Fixed DockUsability Range: 10‐28%
Usable Elevation: 534‐532 MSL
Floating Pole DockUsability Range: 10‐55%
Usable Elevation: 534‐528 MSL
LAKE ELEVATION PROBABILITY
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• In no case shall the combined length of gangway and dock exceed 120’ (safety) (Comp. Plan = NTE 150')
• Single story docks- size not to exceed 1,000 sq. ft. (larger than typical ) (Comp. Plan = 1,500 sf)
• Swim docks incorporated as part of the boat dock will be permitted ‐Individual swim docks will not be permitted
• Single owner or Community docks
• Marinas – consider individually
DOCK STANDARDS
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Will require permit for modifications on District-owned land between 534-541 MSL
• Trees and shrubs up to 2” in diameter may be removed• Removal of larger trees will be managed through
permit
• Placement of some types of non-floating equipment will be allowed (e.g. picnic tables, fixed benches, fire pits, etc.)
ACTIVITY ALONG SHORELINE
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• Continue staff-level workshops
• Engage with Fannin County and others entities• Work with legal team and consultants to draft permit
language
• Develop draft sections of the plan
NEXT STEPS
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Anticipate completion of the Bois d’Arc Lake SMP by Spring 2020
Discussion Items
C. Regulatory update
AGENDA
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REGULATORY UPDATE
Environmental Protection Agency Administrative Compliance Order (ACO) Overview• The origin of the ACO for the District dates back to incidents at Rowlett
Creek and Wylie Treatment Complex from November 2015 and August of 2016.• July 2017 - Ammonia leak at Wylie Complex.• March 2018 - EPA inspection and subsequent report lead to 5 Areas
of Concern (AOCs).• August 2018 - District staff met with EPA to provide a progress
update on the corrective actions addressing the findings from the March inspection.
• March 2019 – District receives Administrative Compliance Order No. CAA-06-2019-3305 from EPA.
• April 2019 – Board approves entering into ACO.
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REGULATORY UPDATE
Progress to Date
District took immediate action to address items in the ACO.
• Addressed the inspection finding which were called out in the ACO Violations 1-3.• Standard Operating Procedures updated.
• Initial ammonia system assessment by 3rd party (Sept. 2017).• Critical updates performed (June 2018).*
• Engaged a 3rd party expert to perform in depth assessment and recommended updates. Completion in June 2019.
• Chlorine and ammonia system training held for operations and maintenance staff. Completed May 2018.
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REGULATORY UPDATE
Forward Look• Engaging a 3rd party RMP auditor
• Required to engage within 90 days of ACO execution - ahead of schedule
• Enter into a service agreement with 3rd party specialist• Service agreement was signed on 3/27/19 - ahead of schedule
• Provide 3rd party hazard analysis and recommended system updates• Completed and will be submitted to EPA - ahead of schedule
• Scrubber system improvements
• Conversion to LAS
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REGULATORY UPDATE
Outstanding Violations (from 2016)
• Failure to maintain the filters in a watertight condition at Plant 4.
• Expected to go before Board in June or July.
• Failure to measure and record the Combined Filter Effluent (CFE) turbidity levels at least once every four hours.
• Eng. Proj. 16-15 will address Plant 4.• A project nomination for Plants 1, 2
and 3 will be submitted.
Texas Commission on Environmental Quality (TCEQ) Comprehensive Compliance Investigation May 2019
New Alleged Violations
• Failure to provide an air gap on the filter to waste lines at Plant 3.
• Engineering began evaluation with consultant prior to inspection.
• Failure to provide signage of a restricted zone at the raw water intake.
• Signs and buoys on order.
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REGULATORY UPDATE
Texas Commission on Environmental Quality (TCEQ) Comprehensive Compliance Investigation May 2019
• Failure to maintain the vent screen on the air relief line at the Farmersville Pump Station Pumps.
• Repaired.
• Failure to maintain the cover on the overflow on the 3.5 MG storage tank without a gap of less than 1/16th in.
• Gap is compliant.
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REGULATORY UPDATE
Additional Issues
• Remove vegetation from fence line at the Farmersville Pump Station.• Removed.
• Assess the discharge at the Casa View Pump Station.• Leak detection investigation ongoing. Needs to dry out.
• Ensure the most current backflow prevention assembly test and maintenance form is utilized.
• Adopted.
• The weirs on the sedimentation basins at Plant 3 are in need of repair or replacement. Ensure even flow can exit the basin.
• A project nomination is being submitted.
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REGULATORY UPDATE
Additional TCEQ considerations
• Casa View 4 MG tank will be reviewed further.
• Wylie Complex Contact Time (CT) study.
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REGULATORY UPDATE
Proposed Agreed Order:12/4/2018 Release of Potable Water
• 12/4/2018: Approximately 8 million gallons of potable water released
• Unnamed tributary of Rowlett Creek impacted
• Resulted in approximately 142 Fish killed
• Fine or Supplemental Environmental Project (SEP) participation: $ 7,275
• Anticipate action at July Water Committee and Board Meeting
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8/30/2018 Release of Potable Water• TCEQ action pending
Discussion Items
D. Discuss preliminary results of North Garland Pipeline Systemelectromagnetic and acoustic evaluations
AGENDA
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NORTH GARLAND PIPELINE INSPECTION UPDATE
Overview• Bottom Line Up Front
• Recap of forensic analysis results – cause of failure
• Overall Summary – SmartBall Findings – Leak Detection
– PipeDiver Findings – Wire Breaks
• Analysis of pipe no. 426
• Ongoing Efforts Update by Maintenance Department
• Next Steps
BOTTOM LINE UP FRONT
SmartBall:• Acoustics technology
• 7 leaks
PipeDiver:• Eddy Current Technology
• 5,955 pipes inspected (21 miles)• 168 pipes with broken wire wraps (bww)
• One pipe with most (20) broken wires NOTrecommended for repair or replacement by the consultant.
• District plans on repairing with clamp in the fall due to associated risk.
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NORTH GARLAND PIPELINE INSPECTION UPDATE
AUGUST 30, 2018FAILURE LOCATION
NORTH GARLAND PIPELINE INSPECTION UPDATE
Localized Compromised Mortar Coating,which led toCorrosion and Embrittlement of WiresandSubsequent Broken Wire Wrapsdue to aCorrosive Soil Environment,which led to Concrete Core Crackingexhibited byCylinder Corrosion,all of which contributed toLoss of Structural Capacity,which ultimately intersected with aTransient Pressure Event.
MODE OF FAILURE
OVERALL SUMMARY
SmartBall:• 7 leaks - Initially
• 6 medium (2-10 gpm)• 1 large (>10 gpm)
• 2 instances of entrained air
• 1 acoustic anomaly
PipeDiver:• 5,955 pipes inspected• 168 pipes with broken wire wraps (bww)
• 1 pipe with 20 bww – area of concern• 38 pipes with 10-15 bww• 129 pipes with 5 bww
• 9 anomalous pipes• 35 thicker cylinder pipes
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PERFORMANCE CURVE - 60-INCH, PIPE NO. 426
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FINDING FOR PIPE WITH MOST BROKEN WIRES
• Performance Curve generated for Class 100-23 used design specifications– 23 feet of earth cover– 100 psi design pressure– 40 psi surge pressure
• 60-inch Piece No. 426 (20 broken wires) is below the Yield Limit, and therefore not recommended for repair or replacement (yield limit is 32 broken wires) per consultant
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MAINTENANCE DEPARTMENT EFFORTS
• All air relief valves on both lines have been inspected, 15 replaced
• 10 Areas of interest identified, all visually inspected (includes 7 leaks)
• 7 Potential leaks– 2 Repaired– 2 Confirmed and require scheduling– 2 Require further excavation– 1 False reading
• 1 Acoustic anomaly, confirmed air relief valve that requires scheduling
• 2 Cases of entrained air – 1 Air relief valve that requires scheduling– 1 False reading
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WHAT’S NEXT?
• Evaluation Report Deliverables• Completed Condition Assessment Report
• Will include pipe performance curves for pipe classes w/ 15+ bww• Workshop to review design checks, risk rankings, & performance curves
• GIS pipe-by-pipe information
• Communication with stakeholders• Staff to provide cities update on results and coordinate with them as
needed on potential future work• Email update to affected homeowners to relay preliminary inspection
results• Respond to media inquiries
• District staff to install clamp repair in fall of 2019
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AGENDA
Discussion Items
E. Opportunity for Committee members to provide feedback onWater Committee meeting
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AGENDA
Discussion Items
F. Opportunity for Committee members to request potential futureagenda items(No substantive discussion of items will take place at this time)
Adjournment
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