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PRIMARY SLUDGE THICKENING <br />Facility Process Component <br />Primary Treatment <br />$4,139,000 <br />Total Cost <br /> . PRIOR <br />Costs EXPEND- 2005-06 :2006-07. 2007-08* 2008=09 2009-10 TOTAL . <br /> ITURES <br />Construction 4 139,000 4,139,000 <br />TOTAL 0 0 0 4 139,000 0 4 139 000 <br />FUNDING SOURCE <br />Capital Reserve 3,639,000 3,639,000 <br />SDC Improvement Reserve 500 000 500,000 <br />TOTAL 0 0 0 4,139,000 0 0 4,139,000 <br /> * Inflated from 2004 by 6.3% to FY05-06 dollars (Engineering News Record factor) and 4% thereafter <br />PROJECT: Primary Sludge Thickening Outside of Clarifiers <br />DESCRIPTION: Thin primary sludge pumping and piping systems to gravity thickeners, two, 50' foot <br /> diameter gravity thickeners (covered for odor control), supernatant overflow pumping and <br /> piping, thickened sludge piping/pumping to digesters. See Odorous Air Treatment for <br /> treatment of odors. <br />JUSTIFICATION: One of the projects that increases capacity of existing primary clarifiers from approximately <br /> 103 mgd to 165 mgd. <br />PROJECT DRIVER: All peak wet weather flows must receive primary treatment prior to diversion and effluent <br /> blending to meet the current NPDES permit for total suspended solids. <br />PROJECT TRIGGER: Primary clarifier surface overflow rates exceeding 1800 gpd/sf: Sustained wet weather <br /> flows through the primaries in excess of 103 mgd after baffling improvements are made. <br />TYPE OF PROJECT: <br />ESTIMATED PROJECT COST <br />(FY 2004-05 Dollars): <br />INFLATED PROJECT COST <br />(FY 2007-08 Dollars): <br />PHASING: <br />100% Capacity <br />$3,600,000 <br />$4,139,000 <br />Budgeted for FY 2007/08 <br />Page 64 FY OS-06 BUDGET AND CIP <br />