Pipe Transition and Coupling Work (Steel-to-PVC)

The contract entails the fabrication and installation of a flexible coupler and concrete collar to seamlessly transition from an existing steel pipe to a new PVC pipe, with the primary objective of establishing a watertight seal and ensuring long-term structural integrity at the junction. This work is critical for maintaining system reliability and preventing leaks or failures under operational stress, particularly in a wastewater or water conveyance setting where durability and leak prevention are paramount. The solution must accommodate differential movement between dissimilar materials and withstand environmental and hydraulic loads without compromising performance. The project is located in Rio Vista, California, and falls under the NAICS code 238990 for other specialty trade contractors, indicating specialized non-building construction work. It is issued as a subcontract by the Central Valley Flood Protection Board, a state agency responsible for flood management infrastructure in California. The contract was posted on June 8, 2026, and the scope requires precise execution of material interfaces, proper concrete encapsulation, and adherence to engineering standards for pipe connections. All work must comply with applicable state and local codes to ensure public safety and infrastructure longevity, with no room for compromise on sealing or durability.