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 ongoing programs of the District including the Regional Water System, Watershed Protection, and Water Conservation
WTP I & II 2018/19 PROJECTS OVERVIEW Plant II Plant I 485 414 479/ 517 Major Projects through 2019 375 - Rapid Mix Sedimentation 363 - HSPS 1-1 Mech Improvement 511 - Wash Water Tank Impr (Elevated) 479/ 485 – Chlorine System improvements 517 434 - Plant II BAF 479/517 – Clear Well Roof/Structural Imp 414 - HSPS 2-1 Electrical Improvements 4
WTP III & IV 2018/19 PROJECTS OVERVIEW Plant III Plant IV 479/ 517 Major Projects through 2019 387 - Plant IV Expansion 387 485 - Chlorine System improvements 480 - HSPS 3-1 Improvements 479/517 – Clear Well Roof/Structural Imp 434 - Plant III Valves 481 - Plant III SCADA improvements 5
Agenda AGENDA Action Items A. Consider Approval of Water Committee Meeting Minutes – August 23, 2018 Recommend Approval of Water Committee Meeting Minutes
AGENDA Action Items B. Consider Recommendation on 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
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 0 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
AGENDA Action Items 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
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
AGENDA Action Items 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
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
AGENDA Action Items 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
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
AGENDA Action Items 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
Recommend
More recommend
