WWTF Phase I Upgrade Project

The City of Nashua, New Hampshire, Division of Public Works is requesting bids for construction at the Nashua Wastewater Treatment Facility Phase I Upgrade Project under IFB0285-072126, with bids due July 21, 2026 at 3:00 p.m. and a mandatory pre-bid conference and project walkthrough on June 23, 2026 at 1:00 p.m. The project is funded in whole or in part through the New Hampshire Clean Water State Revolving Fund (CWSRF) and is subject to Davis-Bacon wage requirements, American Iron and Steel (AIS) provisions, and MBE/WBE compliance requirements — all bidders must submit MBE/WBE documentation and American Iron and Steel acknowledgements with proposals.

The scope includes renovations to chlorine contact tanks and pump building; replacement of secondary and secondary by-pass flow meters and eight flow-regulating gates; renovations to primary clarifiers, septage receiving area, tank drain pumps, and associated piping. The project is located at 2 Sawmill Road, Nashua, NH 03060. Substantial completion is required within 615 calendar days and final completion within 675 calendar days from the Notice to Proceed; liquidated damages are assessed at $1,500 per calendar day for delays beyond each completion milestone. The bid schedule includes a lump-sum item for primary Phase I Upgrade work, allowances for chemical feed pumps ($15,290) and SCADA/PLC programming services ($60,000), and unit-price items for ledge excavation, pavement, crack repair, structural repairs, solids removal, and CCTV inspection.

All bids must be FOB Nashua, NH and accompanied by a bid bond equal to 5 percent of the total bid price. The successful contractor must furnish 100 percent performance and payment bonds within ten days of award notification and execute the contract within ten days of award. Bids remain binding for ninety days following the deadline or until contract execution, whichever is later. Written questions are due June 30, 2026 at noon, with answers posted by July 9, 2026 at 3:00 p.m. Sealed bids may be submitted electronically via Bonfire or in paper format (one paper copy and one digital copy on USB drive) to Central Purchasing at 229 Main Street, Room 11, Basement Floor, Nashua, NH 03060. Contact Amy Girard, Purchasing Manager, at purchasing@nashuanh.gov or 603-589-3332.