Title
Crystal Tree Subdivision Water Main Lining - Proposal Award
History
Crystal Tree Subdivision was developed in the late 1980’s. The water main that was installed during construction was a ductile iron pipe, which is still the standard for water main installation in the village. In the late 1990’s ductile iron pipe manufacturers recommended a polyvinyl wrap when installing a new water main to prevent corrosion to the exterior of the pipe. Crystal Tree Subdivision has been prone to water main breaks due to deterioration of the ductile water main.
Two different methodologies of rehabilitation were explored: open cut and cured in place structural slip lining. Both methods offer positive and negative attributes. In 2009 2,632 feet of water main in Crystal Tree was replaced with PVC pipe. That replacement was completed in advance of the homeowners association planned street rehabilitation project. After evaluation, cured in place structural slip lining proved to be cost effective and the least invasive option. Staff recommends the use of a structural liner with the service connection mechanically connected to the liner. This process eliminates reliance on the host pipe which continues to deteriorate.
Based on available 2018 funding, Utility Division staff prioritized sections of main to be lined based upon quantity of water main breaks and overall main condition. Staff recommends Lake Ridge Road, Golf Road, and a portion of Hollow Tree Road. There would be a total of 2,555 linear feet of water main lined and fifty-nine 1” services reinstated. Additional water main is planned for lining with 2019 funds.
The request for proposals was advertised on November 8, 2018. A total of two hundred three (203) vendors were notified through BidNet and one (1) contractor was emailed directly with a notification of bid. Twenty four (24) companies downloaded the specifications. The proposal opening was conducted on December 5, 2018, and the village received three (3) pr...
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