San Bruno Creek Detention Basin Flap Gate Installation DDO (EA 4X110)

The California Department of Transportation (Caltrans), District 4 – Bay Area/Oakland, is proposing a project to install a flap gate at the 24-inch outlet pipe of the San Bruno Creek Detention Basin along SR-380 at post mile 6.22 in San Bruno, California. The purpose of the installation is to prevent tidal backflow from San Bruno Creek into the detention basin during King Tide events, which have previously caused flooding on 7th Avenue due to its low-lying topography. In conjunction with the flap gate installation, all debris accumulated in the outfall and basin will be removed to ensure unobstructed flow and system functionality. Traffic control measures will be implemented during construction to maintain public safety. The project is categorized as exempt under the California Environmental Quality Act (CEQA) per Class 1(c) – Existing Facilities, as outlined in 14 CCR 15301, with a Notice of Exemption already signed on August 7, 2025, and a certified exemption document attached to the filing. The project is classified as a forecast under NAICS code 237310 and the solicitation number is EA 4X110, posted on August 8, 2025. No contract value, pricing, or payment details are provided, nor are there standard Federal Acquisition Regulation (FAR) clauses, contract type, delivery schedule, invoicing methods, or funding identifiers specified in the documentation. The work will be performed at the detention basin site in San Bruno, with no separate delivery or acceptance location indicated. Juliane Smith, Senior Environmental Scientist and NEPA/CEQA Specialist at Caltrans District 4, serves as the primary point of contact for the project, though no Contracting Officer, technical representative, or procurement officer is formally designated. No special requirements related to security clearances, key personnel, options, or organizational conflicts of interest are referenced, and the solicitation does not include evaluation factors, offeror certifications, or specific submission formats beyond the required environmental exemption documentation.