Regional Service Through Unity… Meeting our Region’s Needs Today and Tomorrow WASTEWATER COMMITTEE MEETING September 18, 2018
AGENDA I. CALL TO ORDER II. OPENING REMARKS A. Executive Director/Committee Champion Status Report concerning legislation and regulatory matters, budgets, current projects and ongoing Wastewater System programs of the District III. ACTION ITEMS A. Consider Approval of Wastewater Committee Meeting Minutes – May 24, 2018 B. Consider Action on the Selection of a Wastewater Committee Vice-Chairman C. Consider Action on the Selection of a Wilson Creek Regional Wastewater Treatment Plant Oversight Committee Chairman D. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on Project No. 501-0470-17, McKinney Prosper Transfer Sewer E. Consider Recommendation on Authorizing Execution of Special Facility Contract with Seis Lagos Utility District F. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on the North McKinney Lift Station Improvements and North McKinney Transfer Force Main Projects G. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on Project No. 301-0471-17, Rowlett Creek Regional Wastewater Treatment Plant Peak Flow Management Improvements, Phase II H. Consider Recommendation on Authorizing Execution of Interlocal Agreement with the Collin County Related to Orr Road IV. DISCUSSION ITEMS A. New Policy for Membership in Regional Wastewater System/Upper East Fork Interceptor System for City of Melissa B. South Mesquite Regional Wastewater Treatment Plant Solids Handling Design C. South Mesquite Regional Wastewater Treatment Plant Peak Flow Preliminary Design D. Muddy Creek Wastewater Treatment Plant Aeration Basin, Odor Control, and Backup Power Improvements Construction Award E. System Performance Update F. Opportunity for Committee Members to Provide Feedback on Wastewater Committee Meeting G. Opportunity for Committee Members to Request Potential Future Agenda Items (No substantive discussion of items will take place at this time) V. ADJOURNMENT
CLICK TO EDIT MASTER TITLE STYLE AGENDA Opening Remarks A. Executive Director/Committee Champion Status Report concerning legislation and regulatory matters, budgets, current projects and ongoing Wastewater System programs of the District
Agenda AGENDA Action Items A. Consider Approval of Wastewater Committee Meeting Minutes – May 24, 2018 Recommend Approval of Wastewater Committee Meeting Minutes
Agenda AGENDA Action Items B. Consider Action on the Selection of a Wastewater Committee Vice-Chairman
Agenda AGENDA Action Items C. Consider Action on the Selection of a Wilson Creek Regional Wastewater Treatment Plant Oversight Committee Chairman
Agenda AGENDA Action Items D. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on Project No. 501-0470-17, McKinney Prosper Transfer Sewer
MCKINNEY PROSPER TRANSFER SEWER Drivers & Goals • 2015 Upper East Fork Interceptor System (UEFIS) evaluation identified the need for additional capacity • Meet the build-out projections for the cities of Prosper and McKinney • Construct 6.4 miles of 48- through 72-pipe • Start construction October 2019 and complete by the end of 2021 • On-going coordination with the City of McKinney’s utility and parks departments
MCKINNEY PROSPER TRANSFER SEWER Project Components • Project delivery is divided into three construction phases: • Phase I: 10,500 linear feet of 66- and 72-inch pipe. Engineer’s preliminary OPCC is $12.5M. • Phase II: 12,600 linear feet of 54- and 66-inch pipe. Engineer’s preliminary OPCC is $11.0M. • Phase III: 10,500 linear feet of 48-inch pipe. Engineer’s preliminary OPCC is $7.6M.
AGENDA D. Recommendation Consultant: Halff Associates, Inc. Scope: Final Engineering Design Project: No. 501-0470-17, McKinney Prosper Transfer Sewer Amount: $2,410,900
Agenda AGENDA Action Items E. Consider Recommendation on Authorizing Execution of Special Facility Contract with Seis Lagos Utility District
SEIS LAGOS UTILITY DISTRICT SPECIAL FACILITY CONTRACT Background o Seis Lagos Utility District (SLUD) current Water and Sewer System customer o NTMWD Operates and Maintains SLUD 0.25 MGD WWTP Effluent flows into Lavon Lake o Regionalization promotes decommissioning small WWTPs in Lavon Watershed o SLUD signed agreement with WNE for future WW service; WNE upsized collection system in accommodate SLUD flows o WNE Customer of City of Wylie, WW flows to Muddy Creek WWTP o SLUD requires new facilities to convey flows to WNE system
Seis Lagos Special Utility District Project
SEIS LAGOS UTILITY DISTRICT SPECIAL FACILITY CONTRACT Special Facility Contract o SLUD approached NTMWD to fund project using Special Facility Contract o NTMWD will issue bonds to fund project and other expenses (reimburse WNE for upsizing collection system) o Major provisions of contract: o NTMWD constructs project (lift station and force main) o SLUD will operate and maintain facilities o SLUD will pay principal and interest and associated expenses o Term of contract is for the life of the bonds (30 years)
AGENDA E. Recommendation Contracting Party: Seis Lagos Utility District, Texas Purpose: Execution of Wastewater Facilities Installment Sale Contract
Agenda AGENDA Action Items F. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on the North McKinney Lift Station Improvements and North McKinney Transfer Force Main Projects
NORTH MCKINNEY LIFT STATION AND TRANSFER FORCE MAIN Drivers and Goals • Lift station originally constructed in 2012 • Conveys 25 MGD to the Wilson Creek RWWTP through the North McKinney Force Main. • Study identified the North McKinney Lift Station as the site to convey flows to the new Sister Grove Regional Water Resource Recovery Facility. • Lift station improvements and a new force main goals: • Meet initial phase service date in 2023 – 64 MGD peak flow • Maintain ability to convey flows to Wilson Creek RWWTP • Second phase estimated in service in 2028 – 128 MGD peak flow
NORTH MCKINNEY LIFT STATION AND TRANSFER FORCE MAIN Project Components • Evaluate lift station alternatives including • Re-purpose existing lift station • Expansion of the existing lift station • Construction of a new transfer lift station • Develop three alternatives for proposed force main route • Confirm pipe sizing and pump requirements • Evaluate existing structures • Site layout and yard piping • Preliminary design report and recommended alternatives • Planning level cost estimate is $46.6 M
AGENDA F. Recommendation Consultant: AECOM, Inc. Scope: Preliminary Engineering Design Project: North McKinney Lift Station Improvements and North McKinney Transfer Force Main Projects Amount: $378,558
Agenda AGENDA Action Items G. Consider Recommendation on Authorizing Execution of Engineering Services Agreement on Project No. 301-0471-17, Rowlett Creek Regional Wastewater Treatment Plant Peak Flow Management Improvements, Phase II
ROWLETT CREEK RWWTP PEAK FLOW IMPROVEMENTS, PHASE II Drivers and Goals • Rowlett Creek RWWTP has a current capacity of 24 MGD on an annual average basis and peak flow capacity of 60 MGD. • Phased expansion of peak flow capacity has lower costs than new conveyance and expansion at Wilson Creek RWWTP. • Phase I – peak flow capacity of 77 MGD (under construction) • Phase II – peak flow capacity of 95 MGD • Phase III – peak flow capacity of 120 MGD • Phase II preliminary engineering recommended the following: • Step-feed alternative which will save construction cost by re- purposing many existing facilities • New solids thickening and dewatering facilities
ROWLETT CREEK RWWTP PEAK FLOW IMPROVEMENTS, PHASE II Project Components • Additional pumps in two lift stations • Convert Train A and Train B to step feed process • Improvements to Train A clarifiers • Demolition of existing Train A and Train B chlorination facilities to be replaced with: • UV disinfection facilities • Disk filter facilities • Various pipe capacity improvements • Electrical and instrumentations improvements--including generators • Demolition of existing solids thickening, dewatering and support facilities and replacement with new solids facilities • Engineer’s preliminary OPCC $50.8M
Solids Improvements
AGENDA G. Recommendation Consultant: Hazen and Sawyer, Inc. Scope: Final Engineering Design Project: No. 301-0471-17, Rowlett Creek Regional Wastewater Treatment Plant Peak Flow Management Improvements, Phase II Amount: $5,182,700
Agenda AGENDA Action Items H. Consider Recommendation on Authorizing Execution of Interlocal Agreement with the Collin County Related to Orr Road
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