The Installation of a Full Trash Capture Device on Castro Valley Boulevard near Lake Chabot Road in Alameda County, California

The Alameda County Public Works Agency is implementing a project to install a large underground trash capture device on Castro Valley Boulevard near Lake Chabot Road in Castro Valley, California. The primary objective of this installation is to achieve compliance with the 100 percent trash load reduction requirement mandated by the Municipal Regional Stormwater Permit (MRP3) through the San Francisco Regional Water Quality Control Board. The scope of work includes the construction of a cast-in-place reinforced concrete diversion structure designed to divert low-flow water from an existing 24 inch diameter reinforced concrete pipe into a new pre-cast trash capture structure that connects to the existing culvert beneath the boulevard. The project will be executed entirely within the County road right-of-way, featuring an excavation footprint of approximately 40 feet wide by 18 feet long and reaching a maximum depth of approximately 13 feet. This initiative is classified as categorically exempt under California Fish and Game Code Section 711.4 and CEQA Section 15301, as it involves minor alterations to existing facilities with negligible expansion of use. Administrative oversight is managed by the Alameda County Public Works Agency, with Moses Tsang serving as the primary point of contact.