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Author      Title/Abstract      

Author: Sandie De Medeiros, Lori Jones (West Yost, Davis), Danea Gemmell (City of Concord)
Date: 3/206
No Dig 2006 Conference

The technical challenges associated with rehabilitating collection system infrastructure represent just one aspect of creating a successful project. This paper provides a discussion and lessons learned related to the innovative ways to design and bid a sewer rehabilitation project to provide a client with a renewed infrastructure system on time, and to help maximize their hard earned funding. In 2004, the City of Concord acquired $12.2 million of bond funding for the rehabilitation of its corroded concrete trunk sewers. The bond funding stipulates that the rehabilitation projects need to be completed by 2007, when the unused money will be returned. The success factors for the project were not only to effectively rehabilitate the deteriorated sewers, but to maximize the use of the bond money within the time allowed. To maximize the use of the money, the design team used innovative ways to minimize the cost and provide an efficient design while still maintaining a high quality. Also the bidding strategy allowed for effective competition not only between several contractors, but the bid was set up to allow competition between several trenchless rehabilitation technologies. The first phase of the project was successfully bid in March 2005 with the City receiving very favorable bids. Phase 1 of the project is being constructed in the summer of 2005 with design of Phase 2 scheduled for August 2005. Phase2 construction is scheduled to start in winter 2006 and finish in mid 2006.

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