AgdaPkt 2012-11-19 - Laserfiche WebLink

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6.1.C. - Page 1 RE PO RT To the Honorable Mayor and City Council From the City Manager November 19, 2012 SUBJECT Award of Contract — EI Camino Real Storm Drain & Water Main Rehabilitation Project (Near James Avenue) RECOMMENDATION Approve, by motion, the contract documents and award the standard form contract for the EI Camino Real Storm Drain & Water Main Rehabilitation Project (Near James Avenue) to Valentine Corporation of San Rafael, CA for their responsive and responsible low base bid of $119,950.00 and authorize the City Manager to increase the contract amount, if necessary, up to 10% of the amount awarded. BACKGROUND Redwood Creek and its tributaries, collectively comprised about 8 miles of waterway, traverse across much of Redwood City, from the hillside to downtown and out to the Bay. The section of about 200 feet of corrugated metal pipe that crosses under the Sequoia High School property near the corner of James Avenue and EI Camino Real was installed prior to 1967 and has been gradually degrading over time. In early November, 2011, there were water main breaks in a nearby water line. One possible cause for the water main breaks is thought to be the undermining of the water main from a leak in the storm drain pipe. Rehabilitation by slip-lining of the storm drain will help to prevent further damage to the adjacent water system. While the water system was fixed as an emergency repair in November 2011, additional rehabilitation, including the addition of an isolation valve and several anodes for Cathodic protection will be added with this project. The additional valve will allow for maintenance of the existing pipe with fewer service disruptions, and the additional anodes will increase the service life of the existing pipe by slowing the corrosion process. The water main is under the sidewalk at this location, and when the emergency water main repairs were completed, the sidewalk was removed and replaced with a temporary sidewalk. As part of this project, the temporary sidewalk will be removed and replaced with a permanent, concrete sidewalk. Some minor pavement repairs on EI Camino Real will also be completed as part of the project. A Caltrans permit has been obtained for work within the Caltrans right of way.