Thurgood Marshall Middle School Fire Main Backflow Preventer Replacement

The San Diego Unified School District is seeking a qualified contractor to replace two 10‑inch fire‑main backflow preventers at Thurgood Marshall Middle School. The work includes removal of existing units, installation of new Watts 909RPDA OS&Y assemblies (or approved equal), associated gaskets, bolt kits, pipe stands, and post‑installation testing and certification. All labor, materials, equipment, and supplies must be self‑performed; no subcontractors are permitted. The bid is awarded to the lowest responsive bidder and requires a 10 % bid bond, performance and payment bonds, and required insurance certificates. • Scope limited to fire‑main backflow preventer replacement at a single middle‑school site • Must be a California‑licensed contractor, self‑performing 100 % of the work • Bid submission via PlanetBids, with a pre‑bid meeting on October 29, 2026 (mandatory) and bid deadline November 6, 2026.