San Diego County Ivalua #BPM013242 (RFB 13242)

Jamacha Force Main and Gravity Sewer Construction Improvements

San Diego County is seeking a construction contractor for sewer force-main and gravity-sewer improvements in Spring Valley. - Government buyer: County of San Diego, Department of Purchasing and Contracting; Addendum 6 and 11 identify Maggie Ramsberger as Interim Director. - Procurement: Jamacha Force Main and Gravity Main Sewer Improvements, RFB 13242. - OEMs: None specified. No manufacturer brands or branded products are identified. - Other named organizations: SDG&E is referenced for utility coordination; Sweetwater Authority (SWA) in connection with property and a sewer easement; Atlas Technical Consultants and C Below Subsurface Imaging as preparers of supporting reports. They are not identified as suppliers or bidders. - Main construction items: 9,000 LF of 18-inch HDPE sewer pipe (ASTM F714 pressure pipe); 400 LF of 18-inch PVC gravity sewer pipe; ductile-iron pipe in 8-inch (54 LF), 10-inch (7 LF), and 16-inch (92 LF) sizes; six plug valves; sewer maintenance holes and cleanouts; a precast vault; retaining wall; fencing, gates, protection posts, and project signs. Bid-item codes are provided in the line-item lists. - Associated work: Temporary sewer bypass and dewatering, asbestos-cement pipe removal, excavation and shoring, traffic control, utility protection, erosion and stormwater controls, traffic-loop detector replacement, and project management. - Notable requirements: Protect active force mains and the Jamacha Pump Station; provide a contractor-prepared and approved bypass-pumping and spill-response plan with full-flow capacity and standby redundancy; obtain County approval for pump-station shutdowns, limited to two hours; hand-excavate within 10 feet of specified high-pressure gas mains and coordinate in advance with SDG&E. HDPE joints are primarily to be thermal butt-fused; 18-inch DIPS DR11 electrofusion couplings may be approved in limited locations where butt fusion is impractical. The Resident Engineer office must be approved, furnished, and at least 1,000 square feet. - Schedule and allowance: The overall construction period is not stated consistently. Addendum 10 identifies 302 working days for physical site work and 352 working days for administrative work; the bid schedule lists 352 working days of time-related overhead and 511 days for the Resident Engineer office. Addendum 10 also specifies a minimum 120-calendar-day office period or as directed by the Engineer. A $100,000 field-order allowance is included.

Description

The County of San Diego is soliciting bids for the Jamacha Force Main and Gravity Main Sewer Improvements. The bid schedule includes work items for sewer pipe installation, sewer maintenance holes, temporary sewer bypass and dewatering, valves, and related construction activities. The source provides project plans, contract documents, supplemental project information, and multiple addenda. The response deadline is October 8, 2026, at 2:00 PM.

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