Raytown awards nearly $2.7 million in sewer and basin contracts; staff say project will reduce inflow

The Raytown Board of Aldermen on Sept. 17 approved a series of contracts to address sanitary sewer inflow and infiltration (I&I), including a $1,548,763.70 contract recommended to Kissick Construction, a $914,208.63 equalization‑basin contract, and a $152,058 construction‑phase services contract with George Butler Associates.

Jason Hanson, who presented the projects, said the Kissick contract covers a neighborhood‑scale sanitary sewer rehabilitation intended to reduce the volume of stormwater entering the sanitary system and thereby lower billing and treatment costs over time. "This is our third kind of neighborhood‑wide large sanitary sewer project," Hanson told the Board, and staff recommended a 10% contingency for unknown conditions in the ground.

Hanson described the 80 Seventh Street equalization basin project as cleaning and lining the basin, installing a new low‑flow concrete channel, replacing about 20‑year‑old valve structures and addressing pipe connections into the basin. He said that the engineer's estimate had been lower but that bids came in higher, so the Board approved the contract with contingency.

The Board also approved awarding construction‑phase observation and inspection services to George Butler Associates for $152,058 to provide daily field personnel and reports during construction.

Board discussion included questions about whether previous projects have shown measurable reductions in inflow; staff said that monitoring can be affected by rainfall variability though after multiple projects the city expects gradual reductions in inflow and associated metered costs.

All three measures passed on roll-call votes at the meeting. Staff will proceed with contracting and construction scheduling; the projects are phased so that work and monitoring continue over months.