Item 2C: Ratification of MWMC Budget

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Metropolitan Wastewater Management Commission Capital Improvements Program Digester Mixing Improvements (Design and Construction) FY 06-07 Capital Budget = $2,472,596 Expected Cash Flow: * FY 06-07 = $1,272,596 FY 07-08 = $1,200,000 The MWMC Facility Plan identifies the need to provide additional solids stabilization volume. This project includes design and construction of digester mixing improvements that will increase the active volume of the existing three digesters, thus allowing for additional solids stabilization volume. This will be accomplished by replacing the existing gas mixing system with a pump mixing system. This project will also defer the need to construct an additional digester. The current schedule calls for soliciting bids in February 2006, starting construction in May 2006, and completing construction by January 2008. Waste Activated Sludge Thickening (Gravity Belt Thickener Building/Equipment Expansion) FY 06-07 Capital Budget = $2,637,000 Expected Cash Flow: * FY 06-07 = $137,000 FY 07-08 = $2,500,000 The MWMC Facilities Plan includes a third gravity belt thickener by expanding the existing building. This is intended to provide additional capacity for waste activated sludge thickening and is anticipated to help delay construction of an additional digester. This project is being reviewed to determine the proper schedule for design and construction. Design work and bidding of the project should occur in FY 06-07. Ultimately, the timing for this project will be determined based on performance testing of the upgraded clarifiers. Clarifier Improvements FY 06-07 Capital Budget = $14,350,000 Expected Cash Flow: * FY 06-07 = $6,950,000 FY 07-08 = $7,250,000 FY 08-09 = $150,000 The Clarifier Improvements Project combines three separate clarifier projects identified in the MWMC Facilities Plan. These projects were combined because they have similar design and construction specifications and also because their timelines are in close proximity of each other. The bundled projects are: 1. Primary Clarifier Enhancements. The Primary Clarifier Enhancements project includes design and construction of baffling in the primary clarifiers and removal of hydraulic restrictions. Enhancing the existing clarifiers will increase primary treatment capacity, increase capacity to treat base and peak flows, and improve effluent quality _ and reliability so that a blended primary and secondary effluent can meet the currentBNPDES total suspended solids limits. Page 30 PROPOSED FY 06-07 BUDGET AND eIP