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DEPARTMENT OF WATER MANAGEMENT <br /> Memorandum No. 2008-22 <br /> September 23, 2008 <br /> TO: Mayor Michael T. Carrigan and City Council <br /> FROM: John A. Smith, Interim City Manager <br /> Keith D. Alexander, Director of Water Management r� <br /> SUBJECT: Supplemental Water Supply Study <br /> SUMMARY RECOMMENDATION: <br /> Council approve the attached Resolution authorizing Task Order No. 14 (Supplemental Water <br /> Supply Study) for the Continuing Agreement for Engineering Services with Black & Veatch <br /> Corporation for a fee not to exceed $181,000. <br /> BACKGROUND: <br /> Recently Council expressed a desire to further investigate several supplemental water supply ' <br /> options that were recommended by City Staff, H. L. Chastain & Associates and the Archer I <br /> Daniels Midland Co. This Task Order will authorize Black & Veatch to evaluate the options in � <br /> greater detail. The options are: <br /> 1. Review the ADM proposal for supplemental sources of water. <br /> 2. Evaluate the feasibility of using the South Water Treatment Plant lake emergency intake <br /> during a drought period. <br /> 3. Review the concept and update the costs for constructing a new South Water Treatment <br /> Plant water intake 1,300 feet upstream of the Highway 51 bridge. <br /> 4. Evaluate potential groundwater sources downstream of the South Water Treatment Plant. <br /> Items 1 & 2 will be done first at a cost of$87,200. If the results of Item 2 indicate that use of the <br /> emergency intake is feasible, then Item 3 may be undertaken at a cost of $34,500 only if <br /> authorized by the City. If the results indicate that intake use is not feasible, then Item 4 may be <br /> undertaken at a cost of $59,300 only if authorized by the City. Therefore, the cost of these <br /> services will range from $87,200 to $181,000 depending on the results of the intermittent steps. <br /> Black & Veatch was the firm that designed the City's south water plant intake structure, raw <br /> water pump station and south water plant in the mid 1980s. Since then Black & Veatch has also <br /> completed several other water plant, Lake Decatur dam and water resource projects for the City. <br /> Since Black & Veatch is the consulting engineering firm with the best cumulative working <br /> knowledge of these subjects, they are recommended for this work. <br /> POTENTIAL OBJECTION: <br /> None foreseen. <br /> STAFF REFERENCE: <br /> Keith Alexander, Director of Water Management,phone 424-2863, email <br /> kalexander@decaturil.gov <br />