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BACKGROUND This project is a part of the annual maintenance program which includes necessary projects such as replacement of failing water pipelines. Water pipeline replacement projects are selected from a list of problem areas, or potential problem areas, identified and maintained by the City's Utilities Division. Repair and replacement projects are prioritized based on records of maintenance, the potential for failure, potential damage caused by breakage, and the expected life span of the existing pipelines. The water pipeline at Hopyard Road and Owens Drive, which interconnects two water main pipelines on either side of Hopyard Road was removed from service this past fall due to leaks. The water pipeline was installed in the 1980s to serve the developing Hacienda business park area. Water service to Hacienda has not been interrupted while the failed pipeline has been out of service because the water distribution system within the park is "looped," but replacing the pipeline is essential to providing reliable water service to the area's customers. The water pipeline on the bridge crossing on Wisteria Trail at Kilkare Road in Sunol was built in the 1960s and serves customers in Kilkare Canyon. The existing welded steel pipe has had numerous repairs due to corrosion and due to leaking needs to be replaced at this time. DISCUSSION This project consists of installing 120 feet of PVC water pipeline and valving on Hopyard Road at the intersection of Owens Drive. The work will impact traffic as it requires trenching across Hopyard Road along the south side of the Owens Drive intersection. Due to the potential for significant traffic impacts, the majority of the work will be completed at night. Approximately 40 feet of existing pipeline at the bridge crossing on Wisteria Trail at the intersection of Kilkcare Road will be removed and replaced with new ductile iron pipe. The work will include custom pipe supports securing the new pipe to the bridge. In addition to the replacement of piping, the installation of seismic fittings, isolation valves, air release valves, and cathodic protection will be installed on the new pipelines ensuring they remain in service for many years. Bids Sealed bids for this project were received on April 12, 2023. Two bids were received, with the low bid at $334,084, and the other bid at $387,000. The Engineer's Estimate was $300,000 (see Attachment 2 for bid summary). Staff has reviewed the two bids and finds that the low bid is responsive and responsible. Past work performed by the low bidder, DPI, Inc., was verified to be satisfactory. Staff recommends awarding the construction contract to DPI, Inc. Consultant/Specialty Services Consulting testing services will be provided under the City's existing on-call materials testing contracts. These services include required specialty testing of the materials for Page 2 of 3