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8.1.A. - Page 1 <br /> REPORT <br /> To the Honorable Mayor and City Council <br /> From the City Manager <br /> October 24, 2016 <br /> SUBJECT <br /> Amendment No. 2 to Design Services Agreement with Carollo Engineers, Inc. for <br /> consulting engineering services to support the design and construction of the Bair Island <br /> Storm Drain Pump Station <br /> RECOMMENDATION <br /> By motion, approve and authorize the City Manager to execute Amendment No. 2 to the <br /> Design Services Agreement with Carollo Engineers, Inc. for consulting engineering <br /> services for the Bair Island Storm Drain Pump Station, in an amount of $39,582 for a <br /> total contractual amount of $321,881 <br /> BACKGROUND <br /> The City systematically replaces aging storm infrastructure to ensure the continued <br /> reliability of the system. The existing Bair Island Storm Drain Pump Station (BISDPS) <br /> was constructed circa 1974 as part of the Bair Island Road Improvements Project. The <br /> pump station consists of two vertical shaft mixed-flow 40 horsepower pumps, a manual <br /> trash rack and 24" diameter discharge force main. The pump station receives flow from <br /> the storm collection system along Bair Island Road and pumps it into Redwood Creek. <br /> The pump station is also being relocated in advance of the future vehicular bridge <br /> extending from Blomquist Street to Bair Island Road. It is anticipated that the existing <br /> pump station is in conflict with the future bridge abutments, thus requiring the need to <br /> relocate the pump station. <br /> Staff issued request for proposals (RFP) to six qualified professional engineering design <br /> firms; Carollo Engineers, Inc., Kennedy/Jenks Consultants, West Yost Associates, <br /> Schaff & Wheeler, RMC Water and Environment, and HDR. Based on evaluating all <br /> proposals, staff recommended and City Council approved on January 13, 2013 a <br /> professional engineering services agreement with Carollo Engineers, Inc. for this <br /> project. <br /> During initial construction of BISDPS in 2013, it was discovered that a sanitary sewer <br /> force main operated by Silicon Valley Clean Water (SVCW) was within the immediate <br /> vicinity of the project site. Work was suspended in consideration of the risk to the <br /> SVCW sewer pipeline. Since the initial suspension of construction for the BISDPS <br /> project in 2013, SVCW constructed a new sanitary sewer force main pipeline, which <br /> began operating in the fall of 2015. This development prompted the City to lift the <br />