Pipeline Replacement – Horizontal Siphon Installation

The contract entails the installation of a new 36-inch steel pipeline using a horizontal siphon technique through an existing 44-inch conduit spanning 1,000 linear feet. This project requires full fabrication of the steel pipe, application of protective coatings, and precision installation to ensure structural integrity and operational efficiency. The work must be executed with strict adherence to environmental safeguards to protect surrounding ecosystems, minimize disruption, and comply with regulatory standards. All phases of the project, from preparation to final placement, demand specialized engineering expertise and advanced techniques to navigate the constraints of the existing conduit while maintaining safety and compliance. The project is classified under NAICS code 221210 for water and sewage system construction and is structured as a subcontract under the oversight of the City and County of San Francisco. Although specific location details such as city, state, or zip code are not provided, performance is expected within the jurisdictional boundaries of San Francisco. The solicitation was posted on June 25, 2026, and is accessible via a state-maintained project portal, indicating alignment with California’s public infrastructure procurement protocols. The work requires coordination with environmental and utilities authorities to ensure seamless integration with existing infrastructure and long-term system reliability.