WATER COMMITTEE MEETING September 27, 2018 Agenda AGENDA II. - - PowerPoint PPT Presentation

Regional Service Through Unity… Meeting our Region’s Needs Today and Tomorrow

WATER COMMITTEE MEETING

September 27, 2018

Agenda

AGENDA

II. OPENING REMARKS A. Executive Director/Committee Champion Status Report concerning legislation and regulatory matters, budgets, current projects and ongoing programs of the District including the Regional Water System, Watershed Protection, and Water Conservation III. ACTION ITEMS A. Consider Approval of Water Committee Meeting Minutes – August 23, 2018 B. Consider Recommendation on Authorizing Execution of Raw Water Supply Contract with Trinity River Authority of Texas for Purchase of Raw Water for Diversion from Main Stem Pump Station (Please refer to Administrative Memorandum No. 5250) C. Consider Recommendation on Authorizing Execution of Water Transport Contract with City of Dallas for Transport of NTMWD Raw Water from Lake Fork to Lake Tawakoni (Please refer to Administrative Memorandum No. 5251) D. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on Project No. 101-0515-18, Wylie Water Treatment Plant II Structural and Mechanical Improvements (Please refer to Administrative Memorandum No. 5249) E. Consider Recommendation on Authorizing Award of Construction Contract on Project No. 101-0481-17, Wylie Water Treatment Plant III Supervisory Control and Data Acquisition Improvements (Please refer to Administrative Memorandum No. 5246) F. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on Project No. 101-0344-13, Bois d’Arc Lake Dam and Intake Structure for Development of a Bois d’Arc Lake Operations Plan (Please refer to Administrative Memorandum No. 5257) G. Consider Recommendation on Authorizing Execution of Replacement Discretionary Service Agreements on Project No. 101-0344-13, Bois d’Arc Lake Dam and Intake Structure (Please refer to Administrative Memorandum No. 5258) H. Consider Recommendation on Authorizing Execution of Interim Extension to Advanced Funding Agreement with Sulphur River Basin Authority for Water Resource Planning in Sulphur River Basin (Please refer to Consent Agenda Item No.18-09-07) I. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on Project No. ENG 18-9, United States Geological Survey Texas Water Science Center Water Resource Investigations Joint-Funding Contracts (Please refer to Administrative Memorandum No. 5252) J. Consider Recommendation on Adoption of Resolution No. 18-36-A Declaring Property Surplus to the Needs of NTMWD and Authorizing the Executive Director to Exchange Surplus Property for Site 12 Parcel, Bois d’Arc Lake, Fannin County Road and Bridge Improvements, Project No. 101-0435-16, and Authorize the Executive Director Execute Documents Necessary for Acquisition and Exchange of Parcels (Please refer to Administrative Memorandum No. 5203-3) IV. DISCUSSION ITEMS A. Bois d’Arc Lake Update B. 72-inch Water Transmission Main Repair Update C. Limitations on Conveyance and Use of Lake Texoma Water D. Opportunity for Committee Members to Provide Feedback on Water Committee Meeting E. Opportunity for Committee Members to Request Potential Future Agenda Items (No substantive discussion of items will take place at this time)

Agenda

AGENDA

Opening Remarks

• A. Executive

Director/Committee Champion Status Report concerning legislation and regulatory matters, budgets, current projects and

• ngoing

programs

• f

the District including the Regional Water System, Watershed Protection, and Water Conservation

WTP I & II 2018/19 PROJECTS OVERVIEW

4

485

414 479/ 517

479/ 517

Major Projects through 2019

375 - Rapid Mix Sedimentation 363 - HSPS 1-1 Mech Improvement 511 - Wash Water Tank Impr (Elevated) 485 – Chlorine System improvements 434 - Plant II BAF 479/517 – Clear Well Roof/Structural Imp 414 - HSPS 2-1 Electrical Improvements

Plant II Plant I

WTP III & IV 2018/19 PROJECTS OVERVIEW

5

Major Projects through 2019

387 - Plant IV Expansion 485 - Chlorine System improvements 480 - HSPS 3-1 Improvements 479/517 – Clear Well Roof/Structural Imp 434 - Plant III Valves 481 - Plant III SCADA improvements

479/ 517

Plant IV Plant III

387

Agenda

AGENDA

Action Items

A. Consider Approval of Water Committee Meeting Minutes – August 23, 2018 Recommend Approval of Water Committee Meeting Minutes

Action Items

B. Consider Recommendation

• n

Execution

• f

Raw Water Supply Contract with Trinity River Authority of Texas for Purchase of Raw Water for Diversion from Main Stem Pump Station Please refer to Administrative Memorandum No. 5250

AGENDA

MSPS RAW WATER

Trinity River Main Stem Pump Station & Pipeline

• Expands reuse supplies by diverting flows

from river into wetlands

• Up to 100 million gallons per day (MGD)
• 17 miles, 72-inch-diameter pipeline
• Cost approx. $120 million
• Completion by early 2019

TRINITY RIVER AUTHORITY: RAW WATER PURCHASE CONTRACT

Contract Overview

• Total Volume: 56,050 acre-feet per year
• Maximum Withdrawal Rate: Minimum of 114 million gallons per day (MGD) or

Previous Day’s Wastewater Treatment Plant (WWTP) Discharge Rate

• Minimum Withdrawal Rate: 50 MGD
• Restrictions:
• Once-Through Use of Water
• 30% Treated Volume Release Downstream from NTMWD WWTPs
• Fees:
• Established by TRA Board Annually- $95 per acre-foot purchase price
• Reservation fee – 0.3 * $95 per acre-foot purchase price
• 2019 Amount: $2.5M

TRINITY RIVER AUTHORITY: RAW WATER PURCHASE CONTRACT

Contract Overview Cont’d

• Purchase Schedule:

Fiscal Years: Reserved (AF/YR) Take or Pay (AF/YR) 2019-2020 42,050 14,000 2021-2025 40,050 16,000 2026-2030 28,025 28,025 2031-2035 14,013 42,037 After 2035 56,050

• Other Provisions
• 25% Surcharge for Overuse
• Emergency Water Available Prior to 2023 for 2 years (drought or emergency)
• Initial Term Through 2068
• 50-year Extension Available

RECOMMENDATION

Action Items

C. Consider Recommendation

• n

Authorizing Execution

• f

Water Transport Contract with City of Dallas for Transport of NTMWD Raw Water from Lake Fork to Lake Tawakoni Please refer to Administrative Memorandum No. 5251

AGENDA

DALLAS WATER UTILITIES LAKE FORK PIPELINE

DALLAS WATER UTILITIES: LAKE FOR TRANSPORT CONTRACT

Contract Overview

• Moves up to 20,000 acre-feet per year of NTMWD Contractual Water

Purchased from Sabine River Authority (SRA) from Lake Fork to Lake Tawakoni

• Dallas May Swap Lake Tawakoni Water in lieu of Transporting Lake Fork

Water

• NTMWD Submits a Transport Contract Annually for Review and Approval
• Transport Fee Adopted by City of Dallas Annually. Anticipate Rate of $0.3419

per 1,000 gallons for 2019

• Contract Term Through October 13, 2025 with Two Additional 10 year

Extensions (in Line with NTMWD Water Purchase Contract with SRA)

• Est. Cost for FY 2019 = $2.23M

RECOMMENDATION

Action Items

D. Consider Recommendation

• n

Authorizing Execution

• f

Engineering Services Agreement on Project No. 101-0515-18, Wylie Water Treatment Plant II Structural and Mechanical Improvements Please refer to Administrative Memorandum No. 5249

AGENDA

WYLIE WATER TREATMENT PLANT II STRUCTURAL AND MECHANICAL IMPROVEMENTS

• Evaluate structural issues related to:
• Expansion joints in basin structure
• Concrete clear well roofs
• Unsupported effluent troughs
• Foundation drain piping
• Evaluate process and hydraulic issues related to:
• Reclaimed water system capacity
• Common walls between treated and untreated water (BAF)
• Common walls between filtered and finished water (BAF)
• Critical meters for process control (BAF)
• Slide gates in clear wells and settled water flume (BAF)
• Evaluate access and workability issues related to:
• Filter gallery access for major maintenance
• Provisions for sludge removal and cleaning of Basins 2 and 7

Critical for Biologically Active Filtration

RECOMMENDATION

Action Items

E. Consider Recommendation

• n

Authorizing Award

• f

Construction Contract on Project No. 101-0481-17, Wylie Water Treatment Plant III Supervisory Control and Data Acquisition Improvements Please refer to Administrative Memorandum No. 5246

AGENDA

WYLIE WATER TREATMENT PLANT III SCADA IMPROVEMENTS

• Competitive Bids previously received in June 2018.
• Ad Memo No. 5207 authorized rejection of bids and re-bid.
• Design engineer underestimated level of programming and integration

effort required for the project.

• Re-bid was $80,965 higher due to:
• Change of materials and construction method for electrical building
• Enhancement of PLC control configuration and resulting network switching and programming
• Clearer understanding of programming requirements
• Enhancements recommended to sustain function of expanding SCADA

system that is approaching its dependable capacity.

• Reasonable confidence in re-bid due to:
• Confirmable cost impacts on enhancements
• Second similar bid from bidder experienced and knowledgeable with NTMWD work

RECOMMENDATION

Action Items

F. Consider Recommendation

• n

Authorizing Execution

• f

Engineering Services Agreement on Project No. 101-0344-13, Bois d’Arc Lake Dam and Intake Structure for Development of a Bois d’Arc Lake Operations Plan Please refer to Administrative Memorandum No. 5257

AGENDA

BOIS D’ARC LAKE OPERATIONS PLAN

Background

• Ownership and operation of Bois d’Arc Lake will require

NTMWD to assume new responsibilities

• Proposing development of two key guidance documents:
• Lake Operations Plan
• Shoreline Management Plan
• Plans will include cross references and reference to other

NTMWD documents, as appropriate

BOIS D’ARC LAKE OPERATIONS PLAN Lake Operations Plan

• NTMWD functions for operation
• f lake and infrastructure
• O&M/SOP for key assets
• Raw water delivery
• Regulatory compliance
• Interagency coordination
• Incident response
• Watershed protection
• Internal document
• Development led by FNI
• Award September Board

Shoreline Management Plan

• Public facilities and public use of

property along shoreline

• Access/lease permits
• Boat ramps
• Private boat docks
• Irrigation pumps
• Onsite Wastewater Treatment

Systems

• Erosion control
• Document may be public
• Developed by TBD Consultant
• Award December Board

Both plans slated for completion in early 2020

BOIS D’ARC LAKE OPERATIONS PLAN

Lake Operations Plan

• Addresses operation and maintenance of:
• Dam and emergency spillway
• Service spillway including debris removal
• Raw water intake, pumps, and liquid oxygen system
• Buoys, marking systems, and debris
• Water quality and invasive species monitoring
• Miscellaneous lake operations items
• References existing NTMWD manuals and resources
• Describes interagency relationships and coordination
• NTMWD monitoring, inspection, and reporting

requirements

RECOMMENDATION

Action Items

• G. Consider

Recommendation

• n

Rescinding Action

• f

Administrative Memorandum No. 5170 and Authorizing Execution of Two (2) Replacement Discretionary Services Agreements with Oncor Electric Delivery LLC in the Amounts

• f $5,975,000 and $17,595,000 on Bois d’Arc Lake Dam and

Intake Structure, Project No. 101-0344-13. Please refer to Administrative Memorandum No. 5258

AGENDA

• Rescind action of Administrative

Memorandum No. 5170, which authorized execution of a previous standard Oncor DSA.

• Raise two high voltage Oncor

electric transmission lines above BDL water surface to meet National Electric Code clearances.

• Authorize payment of 90% of the

estimated cost. Purpose:

Electric Transmission Lines to be Raised

ONCOR ELECTRIC DELIVERY DISCRETIONARY SERVICES AGREEMENTS (DSA)

ONCOR ELECTRIC DELIVERY DISCRETIONARY SERVICES AGREEMENT

RECOMMENDATION

Rescind $23,850,000.00 and Approve $23,570,000.00

Action Items

H. Consider Recommendation

• n

Authorizing Execution

• f

Interim Extension to Advanced Funding Agreement with Sulphur River Basin Authority for Water Resource Planning in Sulphur River Basin Please refer to Consent Agenda Item No.18-09-07

AGENDA

INTERIM FUNDING AGREEMENT SRBA

Background

• Sulphur River Basin Authority (SRBA) created in 1980s by state to
• versee

development and protection

• f

water resources within Sulphur River Basin

• 2002 an initial funding agreement approved by NTMWD, TRWD,
• UTRWD. DWU and City of Irving joined later to an agreement
• Advanced funding agreements continue focus on feasibility of future

water supply projects within the Sulphur River Basin

• This extension will allow SRBA to complete the ongoing efforts with

the Sulphur River Basin Studies

• This is cost shared with DWU, TRWD, UTRWD and City of Irving

RECOMMENDATION

Action Items

I. Consider Recommendation

• n

Authorizing Execution

• f

Engineering Services Agreement on Project No. ENG 18-9, United States Geological Survey Texas Water Science Center Water Resource Investigations Joint-Funding Contracts Please refer to Administrative Memorandum No. 5252

AGENDA

USGS JOINT FUNDING AGREEMENTS

Background

• NTMWD has partnered with USGS since 2009 in

funding efforts related to flow gauges, water quality, and zebra mussel monitoring

• Program has provided:
• Flow and quality data for Bois d’Arc Creek
• Dispersal, survival, and growth of zebra mussel

populations

• Information on formation of cyanobacteria, cyanotoxins,

and taste/odor compounds

USGS JOINT FUNDING AGREEMENTS

Background

• Data is used by NTMWD staff to support O&M,

permitting, and water quality monitoring

• State and federal agencies use data for planning,

research, and reporting

• TPWD waterbody listing status for Zebra Mussels:

USGS JOINT FUNDING AGREEMENTS

Background

• Lavon Lake sampling results for Zebra Mussels
• ---- = None

D = DNA V = Veliger

USGS JOINT FUNDING AGREEMENTS

Project Purpose

• Continue partnership with USGS and renew three

annual, joint-funded contracts for:

• Water quality and flow monitoring for Bois d’Arc Creek
• Zebra Mussel monitoring for NTMWD water supplies,

balancing reservoirs, and raw water infrastructure

• Supplemental seasonal Zebra Mussel monitoring in

Lake Texoma

Contract USGS NTMWD Total Bois d’Arc $33,220 $160,660 $193,880 Routine ZM $47,000 $150,000 $197,000 Seasonal ZM $4,750 $43,250 $48,000

Action Items

J. Consider Recommendation on Adoption of Resolution No. 18- 36-A Declaring Property Surplus to the Needs of NTMWD and Authorizing the Executive Director to Exchange Surplus Property for Site 12 Parcel, Bois d’Arc Lake, Fannin County Road and Bridge Improvements, Project No. 101-0435-16, and Authorize the Executive Director Execute Documents Necessary for Acquisition and Exchange of Parcels Please refer to Administrative Memorandum No. 5203-3

AGENDA

• Authorizes a government body to consult with its attorney in an

Executive Session to seek advice on legal matters regarding pending

• r contemplated litigation or a settlement offer.
• A government body may not invoke this Section to convene a closed

session and then discuss matters outside of that provision.

• General discussion of policy, unrelated to legal matters, is not

permitted under the language merely because an attorney is present.

• Items discussed during consultation with the District’s attorney are

privileged and should remain confidential.

EXECUTIVE SESSION

Section 551.071, Consultation with Attorney

AGENDA

Discussion Items

A. Bois d’Arc Lake Update

RECOMMENDATION

Adjourn Executive Session

AGENDA

Discussion Items

B. 72-inch Water Transmission Main Repair Update

NORTH GARLAND PIPELINE SYSTEM

Prestressed Concrete Cylinder Pipe (PCCP)

NORTH GARLAND PIPELINE SYSTEM

2017

72-INCH WATER TRANSMISSION MAIN REPAIR UPDATE Repair Status

• Pipeline in Service
• Concrete Replacement Ongoing (25% Complete)

Public Interest Responses

• Responding to Transmission Main Location Inquiries, Mostly from

Richardson Residents

• Responding to Media Requests

Ongoing Work

• Finalizing Scopes and Fees (Freese Nichols, Inc. and Halff

Associates, Inc.)

• Electromagnetic Analysis Work Planning Under Way

AGENDA

Discussion Items

C. Limitations on Conveyance and Use of Lake Texoma Water

AGENDA

Discussion Items

D. Opportunity for Committee Members to Provide Feedback on Water Committee Meeting

AGENDA

Discussion Items

E. Opportunity for Committee Members to Request Potential Future Agenda Items

(No substantive discussion of items will take place at this time)

Adjournment