Item 2C: Ratification of MWMC Budget

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Facility Process Component Secondary Treatment $10,189,680 Total Cost Costs Design/Construction FUNDING SOURCE Capital Reserve SDC Improvement Reserve PROJECT: DESCRIPTION: JUSTIFICATION: PROJECT DRIVER: PROJECT TRIGGER: TYPE OF PROJECT: ESTIMATED PROJECT COST (FY 2004-05 Dollars): RECOSTED PROJECT COST (FY 2006-07 Dollars): PHASING: ... '4) .. AERATION BASIN IMPROVEMENTS - PHASE 1 TOTAL . PRIOR EXPEND- ITURES 410000 TOTAL 410,000 8,379,680 1 ,400 000 9,779,680 8,789,680 1 ,400 000 10.189,6.80 Aeration Basin Improvements Design and Construction - Phase I Add step feed, anoxic selectors, and fine bubble diffusers to 4 of the 8 cells of the aeration basins. Remove hydraulic restrictions in both south and north aeration basins (effluent gates). Includes future primary effluent flow control gates for both north and south aeration basins. Increase the dry weather aeration basin treatment capacity to 65 mgd with respect to ammonia (Le., with nitrification) and increase the sustained (Le., on a weekly basis) wet weather treatment capacity to 130 mgd. NPDES permit includes ammonia limit requiring nitrification in dry weather and expansion of wet weather capacity to treat wet weather flows to meet NPDES monthly and weekly suspended solids limits. Maximum month dry weather flow of 25 mgd requiring nitrification. May flows and temperatures could require the use of all aeration basin cells. Peak wet weather flows above 103 mgd require hydraulic modifications. 50% Capacity; 50% Performance $6,900,000 $10,189,680 Budgeted for FY 2004/05, carryover to FY 2005/06 and 2006/07 Page 73 FY 06-07 BUDGET AND CIP