Duncan Hill Treated Water Improvements Project

The Duncan Hill Treated Water Improvement Project, identified by project number 3110005-011C, is led by the Placer County Water Agency and funded by the State Water Board. Located in the unincorporated community of Ophir within Placer County, California, the project involves the installation of approximately 1.5 miles of treated water pipeline across Millertown Road, Calnick Lane, Voyiatzes Road, Duncan Hill Road, and Ophir Road. The scope of work also includes the installation of 560 feet of pipeline beneath non-native grasslands and the placement of two pressure-reducing stations along the project alignment to ensure proper system operation. The project is classified under NAICS code 237110 and was forecasted for June 15, 2026. Environmental compliance is a critical component of the project, as it adheres to a Mitigated Negative Declaration adopted under CEQA guidelines. This includes strict adherence to specific mitigation measures and a formal mitigation monitoring and reporting program to ensure no significant environmental effects occur. Key administrative contacts for the project include Heather Trejo of the Placer County Water Agency and Robyn Mendoza of the State Water Board.