East Branch East Weaver Creek Migration Barrier Removal

The project involves the removal of an existing 8-foot by 60-foot elliptical concrete pipe culvert on East Weaver Creek Road in Trinity County, California, and its replacement with a 15-foot 9-inch by 8-foot by 66-foot aluminum box culvert equipped with wing walls, head walls, a natural stream bottom configuration, and boulder clusters to restore natural stream function. The culvert is located on East Branch East Weaver Creek and currently acts as a barrier to fish migration, which this project aims to eliminate as part of broader habitat restoration goals. Work is confined to a Limited Operating Period from June 15th to October 15th each year to avoid disruptions to sensitive wildlife, particularly during nesting seasons, and is restricted to daylight hours between 7:00 AM and 7:00 PM. Additional activities include installing a single-lane detour bridge to maintain road access, setting up exclusion fencing, and relocating aquatic species to minimize ecological disturbance during construction. All work must comply with regulatory frameworks including the NCRWQB 401 Water Quality Certification, CDFW Lake and Streambed Alteration Agreement, NOAA/NMFS Biological Opinion, and the Clean Water Act Section 401, while implementing Best Management Practices outlined in the 5C Roads Manual to protect water quality and habitats. The project is led by Trinity County’s Department of Transportation with oversight from the Environmental Compliance Specialist II and the Director, and falls under the NAICS code 237990 for other heavy and civil engineering construction. Although the contract is listed as a forecast with a posted date of October 16, 2025, no solicitation number, contract value, or funding details have been disclosed, with general reference to support from the Five Counties Salmonid Conservation Program. No federal acquisition regulation clauses, special contract requirements, payment information, contracting officer details, or evaluation criteria for award are included in the provided materials, as the documentation centers entirely on environmental compliance under CEQA rather than federal procurement regulations. Performance occurs at the specified site in ZIP 96093, with inspections and acceptance expected at the project location. Submissions for environmental review are to be physically filed with Trinity County Community Development or the Office of Planning and Research in Sacramento, with no electronic submission options available. The work is entirely environmentally driven, focused on restoring natural stream processes and fish passage while maintaining transportation infrastructure within strict ecological constraints.