Stormwater and Drainage System Design/Installation

The City of Hanford is seeking a subcontractor to design and construct stormwater detention basins, bioswales, and drainage systems to comply with NPDES permit requirements. The project falls under NAICS code 237110 and is classified as a subcontract, indicating the work will be performed under a prime contractor’s agreement. The primary location of performance is Hanford, California, with the zip code 93230, and the solicitation was posted on July 3, 2026. The objective of the project is to implement infrastructure improvements that manage stormwater runoff, reduce pollution, and ensure regulatory compliance with federal and state environmental standards. The scope emphasizes engineered solutions that integrate green infrastructure elements like bioswales with traditional drainage and detention systems to mitigate urban stormwater impacts. The contract involves detailed planning, site-specific design, construction, and likely ongoing coordination with environmental regulators to meet permit conditions and long-term maintenance criteria.