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Metropolitan Wastewater Management Commission Capital Improvement Program
<br />CLARIFIER IMPROVEMENTS
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<br />Description: Clarifier Improvements (originally Primary Clarifier Enhancements, Secondary Clarifier
<br /> Enhancements and new 9rh and 10rh Secondary Clarifiers). Also added to this project: the
<br /> Equipment Replacement projects to replace clarifier drives ($720,000) and to replace existing
<br /> gates and operators in the Secondary Clarifiers ($120,000); and the Major Rehabilitation of
<br /> existing Clarifier floors ($1,080,000) and- rehab of existing rake arms in the Primary Clarifiers
<br /> ($240,000). An additional $540,000 was transferred to the project for construction of the .
<br /> Contractor Courtyard and Tertiary Treatment Tie-In. includes landscaping in vianity.
<br />Status: The MWMC clarifier construction phase is underway by MKB (general contractor). Project
<br /> completion is anticipated by June/July 2008.
<br />Justification:.. ,Enhancing the existing clarifiers will increase primary and secondary. treatment capacity and will
<br /> maximize the facilities investment in existing infrastructure. Adding the two new clarifiers will
<br /> increase secondary treatment capability and increase ability to handle peak flows.
<br />Project Driver: Increase capacity to treat base and peak flows and improve effluent quality and reliability so that
<br /> a blended primary and secondary effluent can meet the current National Pollutant Discharge
<br /> Elimination System (NPDES) total suspended solids limits.
<br />Project Trigger: From the MWMC 2004 Facilities Plan -the trigger for this project is unacceptably high clarifier
<br /> surface overflow rates and wet weather flows.
<br />Project Type: 100% Capacity -Primary Clarifier Enhancements
<br /> 50% Capacity and 50% Performance -Secondary Clarifier Enhancements
<br /> 100% Capacity - 9rh and 10`h Secondary Clarifiers
<br />Estimated Project Cost: Authorized budget for this project is $17,480,000. Estimated cost to complete is $16.1 million.
<br />Expected Cash Flow: FY 07-08 = $5,591,337
<br />Expenditure/Category: Prior Years 2007-08 2008-09 2009-10 2010-11 2011-12 Total
<br />Design/Construction $11,888,663 $5,591,337 0 0 0 0 $17,480,000
<br />Other 0 0 0 0 0 0 0
<br />Total Cost $11,888,663 $5,591,337 $0 $0 $0 $0 $17,480,000
<br />Funding Source:
<br />Capital Reserve
<br />EPA Grant
<br />SDC Reimbursement Reserve
<br />SDC Improvement Reserve
<br />Equipment Replacement
<br />Reserve
<br />Total Cost
<br />Prior Years 2007-08 2008-09 .2009-10 2010-11 2011-12 Total .
<br />$11,888,663 $3,566,337 0 0 0 0 $15,455,000
<br />0 0 0 0 0 0 0
<br />0 $1,425,000 0 0 0 0 1,425,000
<br />0 $600,000 0 0 0 0 600,000
<br />.'
<br />0 0 0 0 0 0 0
<br />$11,888,663 $5,591,337 $0 $0 $0 $0 $17,480,000
<br />Page 60 FY 07-08 BUDGET AND CIP
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