SR 06:070 - Laserfiche WebLink

Honorable Mayor and Members of the City Council: BACKGROUND In 1997, the City hired a consulting engineering firm specializing in water system facility design to evaluate the existing water facilities constructed by the Pleasanton Township County Water District (PTCWD) on Santos Ranch Road, along Pleasanton Ridge and Kilkare Road. These facilities serve approximately 300 properties within and outside the City limits. The facilities include three booster pump stations, including six pumps, five water storage tanks, and several miles of water mains that range in size from 6 to 12 inches in diameter. The majority of the water lines and tanks were constructed in 1964. The consulting firm 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 the refurbishment recommended by the consulting firm and has completed the recoating of the three water tanks, the installation of the cathodic protection for the existing water mains, and the replacement of sections of pipe at the pipe bends along Santos Ranch Road. Remaining, is the replacement of the three pump stations, including the six pumps and related mechanical and electrical equipment. The project was designed, advertised and put out to public bid in 2005. However, on February 15, 2005, at staff's recommendation, City Council approved the rejection of all bids, to re- engineer and redesign the project in order to reduce costs, and to re -bid the project. The previous lowest responsible bidder submitted a construction bid of $2,778,900. Staff met with the lowest responsible bidder, GSE, the project designer, Tetra Tech, and looked at possible changes in design to reduce costs. Some of the changes included the removal of non - essential amenities such as the paving of the parking areas adjacent to the pump stations, the use of fewer architectural elements on the exterior of the pump station buildings (the buildings are located in fairly remote areas along the private -gated road -- Santos Ranch Road -- which receive very little drive -by traffic), the removal of underground pipe raceways, the use of a bolted 20,000 gallon water tank instead of a new welded tank, the reduction in size of the pump station building footprints, and other cost saving revisions. On March 15, 2005, the City Council authorized a consulting contract amendment with Tetra Tech to redesign these facilities to incorporate cost - reducing recommendations for an amount not -to- exceed $215,160. After completion of the redesign effort, the project was re -bid and bids were opened on December 14, 2005. The lowest responsible bid was submitted by McGuire and Hester, Inc. and the project was awarded to them in the amount of $1,881,450, resulting in a net savings (including redesign costs) of approximately $680,000. SR 06:070 Page 2 of 4