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Page 4 of 6 Sunol Boulevard 20-Inch Water Main (F-7 Line), CIP No. 24173 On August 15, 2023, the City Council approved and authorized the City Manager to execute a professional services agreement with Mark Thomas for the design of the Sunol Boulevard 20- inch Water Main (F-7 Line), CIP No. 24173. A new 18-inch water line is needed on Sunol Boulevard from the intersection of First Street and Bernal Avenue to Sycamore Creek (approximately 4,500 linear feet) to increase the capacity of the existing 12-inch and 16-inch water lines in the roadway. The existing 12-inch cast iron pipe built before the 1960s is nearing the end of its useful life and was recommended to be replaced as part of the Water System Condition Assessment. As such, it is recommended to increase the new water line size from 18-inches to 20-inches to replace the capacity of the 12-inch line when it is decommissioned. The cost savings associated with installing one 20-inch line versus an 18-inch line, plus the replacement of the 12-inch line, is estimated to be $300 per linear foot of pipe. Bids Sealed bids for this project were received on February 22, 2024. Six bids were received, ranging from the low bid amount of $7,852,150 to the high bid amount of $13,758,080. The low bid amount, submitted by JMB Construction, Inc. is approximately 9.3 percent below the Engineer's Estimate of $8,653,750 (see Attachment 1 for bid summary). Staff reviewed bids and found the low bid responsive and responsible. Past work performed by the low bidder was verified to be satisfactory. Staff recommends awarding the construction contract to JMB Construction, Inc. Consultant/Specialty Services Installation of the new pipeline will require the removal and replacement of an estimated 45 traffic signal loop detectors. Loop replacement will be performed by the City’s on-call traffic signal maintenance contractor for an estimated cost of $22,500. The Stoneridge Drive portion of the work requires a new 24-inch gate valve, which is not a standard stock item, to be installed prior to peak summer demands. A check of several suppliers identified that there are no 24-inch gate valves currently available in California that meet the project time frame. To avoid potential project delays, staff recommends the purchase of a 24-inch gate valve from DPI, Inc. that had a surplus new 24-inch valve available for purchase for $35,000. The valve has been tested by City staff and the cost is below vendor proposals for a new valve. Woodard & Curran, Inc., the project designer for the Stoneridge Drive portion of the work, will provide value engineering services in negotiating with potential booster station providers after initial proposals ranged from $1.7 - $1.8 million as compared to an engineer’s estimate of 850,000. Woodward & Curran was tasked with designing a flushing station for the Stoneridge Drive pipeline, which was not a part of the original scope of work for the project, but is necessary for safe cleaning and disinfection of the pipe. This work is not included in its original contract and has an estimated cost of $45,000. Woodard & Curran, Inc. will also provide construction support services during the project, including review of contractor submittals and requests for information, surveying of pipe alignment, testing of the completed installed cathodic protection system, and development of record drawings, for an estimated cost of 65,000. This work is not included in Woodward & Curran's original contract. Page 95 of 228 DocuSign Envelope ID: 7FAA54C3-9A1A-4C50-9AAD-7467E7B73787