Lehigh Southwest Cement Company and Hanson Permanente Cement, Inc., Permanente Plant, Cupertino, Santa Clara County – NPDES Permit Reissuance

The Permanente Plant in Cupertino, California, operated by Lehigh Southwest Cement Company and Hanson Permanente Cement, Inc., is a limestone quarry and former cement facility now producing construction aggregate. The facility’s operations generate various sources of process and stormwater runoff, including treated quarry dewatering water, aggregate crushing and washing water, truck and equipment wash water, and industrial stormwater, all of which are discharged into upper Permanente Creek under the authority of the Regional Water Board Order R2-2026-0015. This permit reissuance governs the lawful release of these waters, ensuring compliance with water quality standards and environmental protections for the receiving waterway. The permit is administered by the Regional Water Quality Control Board, Region 2 – San Francisco Bay, and the point of contact for inquiries and regulatory matters is John H. Madigan, Water Resource Control Engineer, reachable via phone or email. The facility’s place of performance is clearly defined as Cupertino, California, with a zip code of 95014, and the permit reissuance was officially posted on June 17, 2026. While the solicitation is classified as a forecast and does not include a solicitation number or set-aside details, the regulatory framework ensures ongoing oversight of the plant’s water discharges to protect regional water resources.