Construction of the Wilseyville Transfer Station Improvements Project

Calaveras County Integrated Waste Management, a Division of the Department of Public Works, is requesting bids on construction of the Wilseyville Transfer Station Improvements Project under ITB #26-1200-12-914, with bids due October 27, 2026 at 3:00 p.m. The awardee must hold a Class A general engineering contractor license or any combination of Class C licenses constituting a majority of the work, and must be registered to perform public work under California Public Contract Code Section 1725.5. Prevailing wage rates under California Department of Industrial Relations apply.

The scope comprises installation of 45 cubic yards of 9-inch deep reinforced concrete paving at the Wilseyville Transfer Station facility on Blizzard Mine Road, which processes appliances, electronics, and e-waste. Additive alternate work includes a retractable awning, a connex storage container, and a large water storage tank for fire and dust suppression. The contractor must complete base bid work within 30 working days, with an additional 5 working days required for each of the three additive alternates. Work must begin within 10 working days of Notice to Proceed.

The estimated contract cost is $211,534.00 for the base bid; contract award will be made to the lowest responsible bidder for the base bid plus any additive alternates the County selects. Bidder's security equal to at least 10 percent of the bid amount is required, along with payment and performance bonds each equal to at least 100 percent of the total bid. The project must comply with Build America Buy America requirements and California Air Resources Board regulations for vehicle fleets.

The bid opening occurs October 27, 2026 via Zoom. Written questions are due October 14, 2026 at 3:00 p.m., with County responses due October 16, 2026 at 3:00 p.m. The apparent successful bidder will be notified by October 29, 2026, with contract award anticipated by December 8, 2026.