Primary Filtration Project Phase I, Capital Project No. 2022

The Primary Filtration Project – Phase I is a design‑build, lump‑sum construction effort to install new primary‑filtration equipment and supporting civil, structural, mechanical, electrical, and control systems at the Four Rivers Sanitation Authority wastewater‑treatment plant in Rockford, Illinois. The scope includes demolition of existing clarifier structures, construction of wet‑well foundations, installation of cloth‑media disk filters, gravity‑belt thickener, associated pumps, variable‑frequency drives, instrumentation, HVAC, fire‑alarm, site grading, paving, and full start‑up, commissioning, and operator training. The contract is funded by an Illinois Environmental Protection Agency revolving‑loan (IEPA Project No. L17‑5882) and is subject to Davis‑Bacon prevailing‑wage, DBE participation, and extensive insurance and bonding requirements. The award was made to Williams Brothers Construction Inc., with a contract period of 597 calendar days from Notice to Proceed and liquidated damages for schedule overruns.