East Weaver Water Treatment Plant Improvements Project

The East Weaver Water Treatment Plant Improvements Project, managed by the Weaverville Community Services District in Trinity County, California, focuses on upgrading critical water infrastructure to ensure a safe and reliable supply. The scope of work includes the construction of a new water treatment building and a 1-million-gallon concrete water storage tank, the installation of new waterlines and power/communications conduit, and the enlargement of existing earthen backwash ponds. Additionally, the project involves the demolition of an existing concrete sedimentation basin, chemical room, and a 0.4 MG water tank located on National Forest lands. Infrastructure improvements also extend to public utility easements along East Weaver Creek Road, where the Trinity Public Utilities District will replace power poles and convert overhead lines from single-phase to three-phase, alongside the construction of a new pressure reducing valve station. The project is subject to rigorous environmental and regulatory compliance, including the California Environmental Quality Act and the Safe Drinking Water Act. Key requirements include adhering to OSHA safety standards for confined spaces, following the California Manual on Uniform Traffic Control Devices for road work, and complying with federal and state floodplain management and fire safety codes. Biological assessments have been conducted to protect threatened and endangered species in accordance with the Endangered Species Act. Construction is scheduled to begin in May 2027, with phases for demolition, site preparation, and grading leading into building construction, with an expected operational year of 2028.