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DEPARTMENT OF WATER MANAGEMENT <br /> Memorandum No. 2011-16 <br /> August 22, 2011 <br /> TO: Honorable Mayor McElroy and City Council <br /> FROM: Ryan P. McCrady, City Manager <br /> Keith D. Alexander, Director of Water Management <br /> SUBJECT: South Water Treatment Plant Basin Repairs <br /> Phase I Engineering Services <br /> SUMMARY RECOMMENDATION: <br /> Council adopt the attached resolution approving Task Order No. 19 for a Continuing Agreement <br /> for Engineering Services with Black & Veatch Corporation to perform South Water Treatment <br /> Plant Basin Repairs Phase I Engineering Services for a lump sum fee of$29,300. <br /> BACKGROUND: <br /> As reported to Council earlier this year, the South Water Treatment Plant (SWTP) has four <br /> enormous concrete basins that are used to mix water purification chemicals with the water that <br /> enters the plant from Lake Decatur. The basins are similar to extremely large and deep <br /> swimming pools with robust chemical feeding and mixing equipment installed in them. Two of <br /> the basins are 105 feet square and 19 feet deep, the other two are 120 feet square and 21 feet <br /> deep. <br /> Over the past 23 years that the SWTP has been in operation, the chemicals, exterior weathering <br /> and continuous use have taken a toll on the condition of the concrete, mixing systems, overall <br /> performance and energy efficiency. Large concrete walkways that provide access to the basins <br /> and also serve as the roof of the SWTP basement are also deteriorating and in need of <br /> rehabilitation. <br /> As authorized by Council earlier this year, Black &Veatch has completed an inspection report of <br /> these facilities with recommendations and opinions of probable cost of construction to restore the <br /> basins, walkways and related equipment to a high level of performance and reliability. Based on <br /> the report, City staff has developed this repair project schedule: <br /> Phase I - FY 2011-2012 Preliminary Construction Cost Estimate <br /> Expansion Joint Repairs $17,840 <br /> Suspended Slab Renovation $92,000 <br /> Miscellaneous Basin Repairs $17,600 <br /> Total $127,440 <br /> Phase II- FY 2012-2013 Preliminary Construction Cost Estimate <br /> Basin Equipment Replacement &Repairs $324,000 <br /> Crane Rental &Misc. Items $5,000 <br /> Total $329,000 <br /> 1 <br />