SR 05:045 - Laserfiche WebLink

responsible bidder in the amount of $2,7'78,900 and provide additional funding in the amount of $900,000 to complete the project, or 3) reject all bids, value engineer the project and redesign the project to reduce the overall construction costs and rebid the project. City Council approved Staff's recommendation to reject all bids, redesign the project using less costly materials, eliminating all nonessential elements of the project, and exploring the use of less labor intensive product installations with the objective to reduce the overall project costs. The attached Amendment to Tetra Tech's design service contract provides for the redesign of the project, bid support to publicly rebid the project, and to provide for construction services which include pump start-up services and electrical inspection services. DISCUSSION The Santos Ranch Pump Station Project (CIP No. 991035) includes the reconstruction of three water-booster pumping stations located along Santos Ranch Road westerly of Foothill Road. All three pump stations (the water tanks, pumps, piping and electrical equipment) were constructed in 1964 by the then existing Pleasanton County Township Water District (PTCWD). The District sold bonds in order to generate funds to construct these pump station improvements and the property owners whose properties' benefited by the improvements paid the assessments. In 1972, the PCTWD was dissolved and the City of Pleasanton agreed to assume the obligations of the District. Accordingly, the District's facilities, including the pumps and the waterlines, became the City's. The City has operated, maintained and made minor improvements to each pump station since 1972, including adding the wooden buildings that protect the pump station components in 1988. However, these pump stations are now approximately 40 years old and the vast majority of the pump station components are at the end of their useful life. There are approximately 300 existing water customers within the area served by the three Santos Ranch Pump Stations. The majority of these customers are in the County of Alameda, with homes located in the Kilkare Woods area just north of the town of Sunol. In 1997, the City hired a consulting engineering firm specializing in water system facility design to evaluate the existing water facilities constructed by the PTCWD on Santos Ranch Road, along Pleasanton Ridge and Kilkare Road. The facilities include three booster pump stations including six pumps, five water storage tanks, and several miles of water mains ranging in size from 6 to 12 inches in diameter. The majority of the water lines and tanks were also constructed in 1964. The consultant's report recommended the replacement of the pump station piping, electrical equipment, mechanical equipment, portions of the pump station buildings, the recoating of three of the five water tanks and the installation of cathodic protection to the water mains to guard against pipe corrosion. The City has phased this refurbishment and has completed the recoating of the three water tanks and has completed the installation of the cathodic protection for the existing water mains SR:05:045 Page 2 of 5