Douglas L. Smith Middle Basin Asset Renewal Project

The Johnson County Board of County Commissioners is soliciting bids for the Douglas L. Smith Middle Basin Asset Renewal Project, a comprehensive renovation and expansion of multiple buildings and process areas at the Middle Basin Wastewater Treatment Facility. The scope includes demolition, equipment replacement, structural repairs, installation of a new natural‑gas standby generator, upgrades to pump stations, construction of a new sodium hypochlorite storage area with a pre‑engineered building, and extensive site‑work (yard piping, electrical, paving, grading, erosion control). All labor, materials, equipment, and services are required, and bidders must submit a 5 % bid bond and complete a mandatory pre‑bid/site‑visit. • Scope covers MB‑2, MB‑3, MB‑7, MB‑8, MB‑10, MB‑11, MB‑13 existing structures and new MB‑17 process area. • Major tasks: grit classifier & conveyor replacement, belt filter press demolition, motor control center upgrades, generator installation, pump modifications/replacements, tank demolition, flow‑meter relocation, odor‑control fan and HVAC upgrades, new fiberglass‑reinforced storage building. • Required pre‑qualified equipment purchases (VFDs, rotary lobe pumps, grit classifiers) already priced in the solicitation. • Mandatory pre‑bid and site visit on 24 Jun 2026 at the WWTF admin building, Overland Park, KS. • Bids due 2 Sep 2026 via IonWave; questions due 21 Aug 2026.