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REPORT <br />To the Honorable Mayor and City Council <br />From the City Manager <br /> <br />July 25, 2016 <br /> <br />SUBJECT <br />Reject all Bids – 2016 Redwood Creek Repair and Rehabilitation Project <br /> <br />RECOMMENDATION <br />By motion, reject all bids for the 2016 Redwood Creek Repair and Rehabilitation Project <br /> <br />BACKGROUND <br />Storm water within the City primarily drains by gravity to Redwood Creek or one of its <br />tributaries: Kensington Branch, Stulsaft Branch, Jefferson Branch, and Emerald Branch. <br />These branches converge and discharge into San Francisco Bay near Bradford Street <br />and total about 8 miles in length collectively. <br /> <br />Certain portions of Redwood Creek and its tributaries in the lower area of the City have <br />been improved by the construction of concrete lined channels and box culverts <br />approximately 50 years ago. Since then, aside from some emergency repairs, the creek <br />walls and channels have not been improved. Over time, these concrete structures <br />developed deficiencies such as cracking, spalling, exposed, damaged and/or corroded <br />reinforcing steel, joint filler deterioration, and horizontal/vertical displacements in <br />concrete joints. <br /> <br />Repair and rehabilitation of the concrete structures are necessary to ensure continued <br />reliability of the storm water collection system. This project is the first improvement <br />project of a multi-year repair and rehabilitation program for Redwood Creek. In the fall of <br />2015, the City obtained permits from the regulating agencies, which are the US Army <br />Corps of Engineers (USACE), California Regional Water Quality Control Board <br />(RWQCB), and California Department of Fish and Wildlife (CDFW) to work within <br />Redwood Creek and its branches. The permits allow for repair, rehabilitation or <br />replacement within the concrete channel and concrete box culvert portions of the creek <br />only. No work is authorized within natural channels. <br /> <br />ANALYSIS <br />The City contracted with BKF Engineers to document deficiencies of the Redwood <br />Creek and its four tributaries in 2012. The Redwood Creek Deficiency Review report <br />indicated that although only a few deficiencies are serious and require immediate <br />attention, some of the less critical deficiencies could lead to more serious failures in the <br />future if left untreated. Upon review and evaluation of identified deficiencies, the <br />6.1.B. - Page 1