Site work and new construction of a water / sewer project in Chelmsford, Massachusetts. Completed plans call for the construction of a water / sewer project; and for site work for a water / sewer project.

**As of March 26, 2026, this project has not yet been awarded. A timeline for the award has not yet been established.** Masonry, Miscellaneous and Ornamental Iron, Roofing and Flashing, Painting, Plumbing, HVAC, Electrical The project involves constructing a new treatment process for the removal of PFAS at the Riverneck WTP. The treatment process will be housed in a separate masonry building and consist of six, pressurized 12-foot diameter vessels filled with granular activated carbon (GAC). The building will be approximately 132 by 57 feet with the main process floor depressed 4-feet below ground elevation. The building will contain two-celled backwash supply tanks with vertical turbine pumps, an electrical room, and a mechanical room. The work will also include various upgrades to the Riverneck WTP main building. This project included prequalification for General Contractors and Filed Subbidders. Only prequalified General Contractors and Filed Subbidders can submit a bid. Contractor Qualification DCAMM Certificate Required for DCAMM contracts over $150,000, Highway Division contracts over $50,000. Question Deadline 02/04/2026 Questions regarding the Contract Documents shall be directed to Jeff Valentine, Telephone number (508) 439-2573 or e-mail address jeff.valentine@aecom.com All questions by prospective Bidders as to the interpretation of the Contract Documents shall be submitted in writing to Engineer and shall be in its possession at least five (5) business days before the date set for the receipt of Bids