Harnett County #ENG24-0788

Southwest Wastewater Pump Station Upgrade and 20-Inch Force Main Construction

Harnett Regional Water is seeking a contractor for a pump-station upgrade and a major wastewater force-main project in Harnett County, North Carolina. - Government buyer: Harnett Regional Water, Harnett County, North Carolina; no sub-agency or office specified. - Project scope: Upgrade SLS #57, including headworks work, two replacement 100 HP submersible pumps, a lime-feed system, electrical, SCADA, controls, telemetry, wet-well coating, and bypass pumping. Construct approximately 26,220 LF of 20-inch DR-21 C905 PVC force main with related piping, fittings, valves, casing, site restoration, and erosion controls. - Key quantities and equipment: Force-main schedule includes 20,967 LF at 42-inch minimum cover, 5,018 LF at 78-inch minimum cover, and 235 LF of fusible PVC in casing. The station work also includes a 5,600-gallon lime tank, fiberglass enclosure, and two fiberglass metering manholes with Parshall flumes. A 3/8-inch 304 stainless-steel baffle plate is required. - Named manufacturers/products: Sherwin-Williams Dura-Plate 6100 and PermoxCTF are identified as lining options; EBAA Iron Series 2800 bell-restraint harnesses and supports are an accepted alternative for DR-21 PVC at steel-cased bores. - Notable requirements: 36-inch steel casing bores are priced separately for soil and rock; casing must be at least 0.50 inch thick. The bid documents require MBE/WBE and Build America, Buy America supplements. Rock-bore pricing requires special tooling and engineer inspection. Fort Bragg Pump Station maximum-day flow is expected to be 12.5 MGD. - Performance: Substantial completion is required within 360 calendar days after contract time begins, with final completion within 390 calendar days.

Description

The project consists of one contract with two sections. Section A upgrades the existing SLS #57 sewer pump station, including headworks modifications, replacement of two existing 100 HP submersible pumps, a new lime feed system, and electrical, SCADA, and controls work. Section B involves installing 26,220 LF of 20-inch sewer force main and appurtenances, along with required sitework, piping, fittings, and valves. Addenda revise the bid documents, add compliance supplements and specifications, and clarify project requirements; the bid date is November 12, 2026.

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