NCC WTP - Collection System Optimization

The Colorado Department of Public Health and Environment is soliciting design/build proposals under RFP 2027000097 for the North Clear Creek Water Treatment Plant Collection System Optimization, with a mandatory pre-proposal conference and site tour on November 17, 2026 at 10:00 a.m. at 6191 Highway 119, Black Hawk, Colorado, and prequalification submittals due January 4, 2027 at 2:00 p.m. MST. At least 80% of work must be performed by Colorado labor, with written justification required for any deviation, and award is made considering a Colorado resident bidder preference.

The scope covers assessing the existing collection system at the Central City/Clear Creek Superfund Site, designing and constructing pipeline projects to optimize collection, and transporting acid mine drainage from historic mine adits to the plant with accurate flow accounting. The project uses an Integrated Project Delivery approach with a Design/Build Guaranteed Maximum Price, and the guaranteed maximum price is due at completion of the Design Development phase. Design begins April 1, 2027, and construction runs June 2027 through March 2028, followed by a warranty period. Bidders must demonstrate bonding capability up to $2.5 million with a surety letter and post pay and performance bonds of not less than 50% of contract value. Contractors must have operated in the same business under the same name for the last two years. Required compliance includes Colorado prevailing wage, the Buy Clean Colorado Act for eligible materials, and apprenticeship program participation for subcontractors with contract values of $250,000 or more.

The estimated project cost is $2.0 million. Evaluation weights qualifications at 60% and sealed fee proposals at 40%, with the lowest fee receiving the maximum fee score. Interviews are scheduled for the week of February 1 through 5, 2027, and selection is announced February 11, 2027. The project is financed by the State of Colorado and the U.S. Environmental Protection Agency. Submissions go through the Rocky Mountain E-Purchasing System (BidNet), and the solicitation package includes a vendor confirmation form, an acknowledgement and attestation form, and a fee proposal form.