Los Valles / Project No. 98-34/Case No(s): ENV201300138, Revised Tract 52584, VAR 201300003, CUP 201300081, OAK 2-1300023

The Williams Ranch Development project, identified by Revised Tentative Tract Map No. 52584, involves the coordination of administrative costs and water facilities to be financed through the Castaic Union School District's Community Facilities District No. 2025-1. Authorized by the Los Angeles County Board of Supervisors on May 12, 2026, this action enables the Los Angeles County Waterworks District No. 36, Val Verde, to adopt a resolution ensuring compliance with the Mello-Roos Community Facilities Act of 1982. The project is located in Castaic, Los Angeles County, and is managed by L.A. County Public Works with the County of Los Angeles serving as the lead agency. In accordance with the California Environmental Quality Act, a Notice of Determination was filed on May 27, 2026, confirming that the project will not have a significant environmental effect based on a prepared Negative Declaration. The project is associated with State Clearinghouse Number 2013121056 and includes specific mitigation measures and monitoring plans. Administrative oversight is provided by personnel from the Department of Public Works and the Regional Planning division, with the project falling under NAICS code 237110 for heavy and civil engineering construction.