Human Services Commission Meeting Agenda Packet 10022024

Page 3 of 7 The project will install a new 18-inch water line in parallel to the existing 12-inch line from Turnout No. 5 at the corner of Nevada Street to the Vineyard Booster Station at the intersection of Vineyard and Bernal Avenue. The project also includes improvements at Turnout No. 1 on Santa Rita Road that will replace the interior piping and equipment to Zone 7 Water Agency’s current standards and include a motorized control valve, flow meter, fluoride injection, and instrumentation. The turnout was placed out of service after it was flooded, the equipment was temporarily repaired, and the leak was repaired. Construction of the project began in February 2024, with major construction impacts anticipated in late March 2024. Stoneridge and Sunol Water Lines & Turnout No. 4 - IN PROGRESS The second project consists of Turnout No. 4 Replacement and Booster Station and Stoneridge Drive 24-Inch Potable Water Main (F-1 Line), CIP No. 24171, and the Sunol Boulevard 20-Inch Water Main (F-7 Line), CIP No. 24173, packaged together as Near-Term Water Improvements. Bids opened on February 22, 2024, and the bid was presented to the City Council on March 19, 2024, with an anticipated construction cost of $9.5 million. Work on Stoneridge Drive occurs from Johnson Drive to Hopyard Road and will include installation of approximately 3,200 linear feet of 24-inch fusible PVC water main; 450 linear feet of ductile iron pipe ranging in diameter from 18-inch to 24-inch; site preparation for installation of a new prefabricated booster station which is being procured separately; and installation of the prefabricated booster station with new Zone 7 connection once fabrication is complete. Work on Sunol Boulevard will extend from Sycamore Road to Bernal Avenue and includes the installation of 4,500 linear feet of 20-inch ductile iron pipe connecting to the existing City system at each end. The project will construct a larger turnout and booster station that will increase the firm capacity and reliability of the turnout from 1,000 gallons per minute (gpm) to 5,200 gpm. Turnout No. 4 Booster Station - IN PROGRESS The third project is the procurement of the prepackaged booster station. Given the limited site conditions, a prepackaged booster station will be built off-site and will be similar to the Recycled Water Booster Station in Ken Mercer Sports Park. The consultants developed a request for proposal (RFP), and proposals were received on January 19, 2024. The proposals ranged from $1.7-$1.8 million, as compared to the engineer’s estimate of $850,000. Further analysis and updates to the RFP are being completed to reduce costs. It is anticipated the booster station will not be installed until spring 2025, and the temporary rental pump will continue to be in place as needed. In addition to the water line improvements, the bond proceeds will be utilized toward the design work of new City wells to replace the City’s ground water pumping quota. Water Supply Alternative – City Ground Water Supply Project - IN PROGRESS The Water Supply Alternative project identified and reviewed options to address PFAS in the City's existing groundwater wells and outlined several alternatives to restore the City’s 3,500 acre-feet groundwater pumping quota. The City is moving forward with a project to design, construct, and operate two new groundwater wells in the Bernal sub-basin (as outlined in the agenda report regarding the Water Supply Alternatives Study presented to the City Council on October 17, 2023). If during the feasibility process of test drilling and permitting with Zone 7, it is determined that new groundwater wells are not feasible, then the City would pivot back to constructing a reduced PFAS Treatment and Well Rehabilitation project with a focus on improvements to Well 8 (City PFAS Treatment and Well 8 Rehab Project). The project is Page 212 of 448Page 221 of 557