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REPORT <br />To the Honorable Mayor and City Council <br />From the City Manager <br /> <br />August 28, 2017 <br /> <br />SUBJECT <br />Final Acceptance - Redwood Shores Potable Water Transmission System Seismic <br />Improvement Project <br /> <br />RECOMMENDATION <br />By motion, accept the Redwood Shores Potable Water Transmission System Seismic <br />Improvement Project and authorize the release of bonds and retention according to City <br />procedures <br /> <br />BACKGROUND <br />On October 10, 2011, the City Council accepted the Water System Master Plan Report <br />and directed staff to move forward with specific recommendations and projects for <br />future Council consideration. The Water System Master Plan forecasts improvements <br />necessary to accommodate water demand by new development and redevelopment <br />activities anticipated by the City’s General Plan; analyzes and identifies improvements <br />for reliable performance during normal and emergency conditions, such as fires and <br />earthquakes; and prioritizes capital improvements to the system for the subsequent 20 <br />years after approval. <br /> <br />The Water System Master Plan includes a City-wide W ater System Seismic Reliability <br />Sub-Program to upgrade potable water transmission pipelines, and upgrade and repair <br />tanks and pump stations. The purpose is to make the water delivery system more <br />reliable and better able to withstand an earthquake. The Sub-Program has been divided <br />into various projects that are being performed in order of priority and availability of <br />funds. The City’s water system has two water tanks in Redwood Shores. The Topaz <br />Pipeline and the Redwood Shores Transmission Loop bring water to these tanks. Due <br />to the type of soil and the proximity to water bodies, these pipelines are considered to <br />be more vulnerable to earthquake damage. The Redwood Shores Potable Water <br />Transmission System Seismic Improvement Project is the fourth of the seismic retrofit <br />projects. The project installs by-pass outlet/piping and isolation valves, and acquires <br />emergency hoses and a trailer in order to quickly restore water service to the RWS <br />area, which will aid with repairs of damaged pipe following a large earthquake event. <br /> <br />City staff hired and worked with G & E Engineering Consultants to perform the design <br />and prepare the Contract Documents. A project location map is attached. <br /> <br /> <br />6.2.B. - Page 1