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Metropolitan Wastewater Management Commission Capital Improvement Program <br /> <br />ODOROUS AIR TREATMENT – PHASE 1 <br />Description: <br /> Biofilters technology treatment for odors from primary clarifiers, expanded pretreatment <br />area and new influent pumping station. Includes the complete covering of the primary <br />clarifiers, which is additional improvements beyond the 2004 MWMC Facilities Plan <br />concept of covering only the weirs and launders in the clarifiers. <br />Justification: <br /> Primary clarifiers are odor sources. Although the Facilities Plan indicated that most <br />odors are generated and can be captured at the weirs and launders of the clarifiers, <br />information from other treatment plants which have used this technology indicates that <br />the only effective means of odor control on the primaries would be complete coverage. <br />This change in concept has been communicated to the Commission. The expanded <br />pretreatment facilities and new influent pumping station will also be additional odor <br />sources that must be dealt with. <br />Status: <br />As of December 23, 2009, the project is in the construction phase. The odorous air <br />treatment project is currently collecting and treating air from the new pretreatment <br />system. The contractor anticipates receiving materials to start covering the primary <br />clarifiers in January of 2010. <br />Project Driver: <br />Maintain MWMC’s status as environmental stewards. Address neighborhood odor <br />complaints and community concerns regarding odors. <br />Project Trigger: <br />Coordination with the design of the pretreatment expansion and influent pumping <br /> <br />expansion and be on-line in coordination with construction of those facilities. <br />Project Type: <br />100% Performance <br />Improvement <br /> SDC Eligibility: <br />26% <br />Estimated Project Cost <br />: $9.4 million <br />Expected Cash Flow: <br />FY 05-06= $2,295; FY 06-07 = $43,451: FY 07-08 = $384,152; <br />FY 08-09 = $1,104,902; FY 09-10 = $7,567,000; FY 10-11 = $1,732,200 <br />2009-10 <br />Expenditure/Category:Prior YearsEst. Act.2010-112011-122012-132013-142014-15Total <br />Design/Construction $1,534,800 $7,567,000 $1,732,2000000$10,834,000 <br />Other 00000000 <br />Total Cost $1,534,800 $7,567,000$1,732,200$0$ 0$ 0$ 0$10,834,000 <br />Page 57 DRAFT FY 10-11 BUDGET AND CIP <br />