R2003-41 ACCEPTING THE BID AND AUTHORIZING A CONTRACT

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COUNCIL COMMUNICATION FORM Engineering & Infrastructure Memorandum NO. 2003-13 March 27 2003 TO: Honorable Mayor Howley and City Council FROM: Steve Garman, City Manager Stephen Swanson, P.E., Director of Engineering & Infrastructur��R�" Matthew C. Newell, P.E., City Engineer� SUBJECT: Miscellaneous Sanitary Sewer Rehabilitation, City Project 2003-14 SUMMARY RECOMMENDATION: It is recommended by staff that the City Council approve the attached resolution awarding the contract for Miscellaneous Sanitary Sewer Rehabilitation, City Project 2003-14, to Insituform Technologies USA, Inc., as the lowest, responsible bidder in the amount of$393,649.00, and that the Mayor be authorized to execute the contract, and the City Clerk to attest. BACKGROUND: The Miscellaneous Sanitary Sewer Rehabilitation project entails the structural lining of sewer pipes that are in poor structural condition. Pipe lining is accomplished by using water pressure to insert a resin coated felt tube, somewhat like a long balloon, that is unfolded into the line and then cured by heating the water in the line to harden the resin. The ends are then cut and service laterals are reestablished. Interested Council members can find out more information on this rehabilitation process by visiting the Insituform web site (www.insituform.com) or one of the other web sites set up by contractors that provide this type of service. Over the past several years the City has been pursuing an aggressive sanitary sewer inspection program which has identified numerous lines that are in relatively poor structural shape. Additionally, some sanitary sewer lines have deteriorated joints that allow an inordinate amount of ground water to infiltrate into the pipe thus causing backups and surcharges during wet weather. Cured-in-place sewer lining adds structural capacity to pipes that are cracked and in the process of failing and it closes up leaking joints that are allowing ground water to enter the pipe. This type of repair method can be significantly cheaper than digging up a collapsed line and it is important that pipe line inspection continue to identify candidate lines and that funding continue to be available to restore them before the damage increases.