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Council approves $522,191 clarifier procurement after plant failure
Summary
Riverton awarded Westech Engineering $522,191 to pre‑procure a clarifier mechanism for the wastewater treatment plant after a clarifier failure and as part of a larger $2.6 million WCDA grant project.
RIVERTON, Wyo. — Riverton City Council on Aug. 5 authorized procurement of a replacement clarifier mechanism for the city wastewater treatment plant, approving a $522,191 contract with Westech Engineering LLC as an early‑procurement step after the plant’s clarifier failed earlier this year.
Council was told the clarifier — a roughly 90‑foot‑diameter mechanism housed under one of the plant domes — failed in spring 2025 and staff, together with HDR engineering and the Community Development Authority (WCDA), moved to pre‑procure a replacement to expedite repairs. The clarifier purchase will be paid from an existing WCDA grant package of about $2.6 million allocated to plant upgrades; the city reported no local matching requirement for this procurement.
The engineering estimate for replacement had been about $622,000; the low bid from Westech came in at $522,191 and a second bid from EnviroDyne was $791,000. HDR and staff reviewed the bids and recommended awarding the pre‑procurement to Westech. Council approved the recommendation.
City staff said the pre‑procurement is an initial step while the larger engineering and construction procurement for the plant modernization proceeds. HDR will continue to administer the design and construction procurement processes; the grant partner (WCDA) earlier had agreed with the expedited procurement approach.
Council discussion focused on schedule and cost: staff noted the bid came in below the engineer’s estimate and that using grant funds for the pre‑procurement reduced the city's near‑term capital burden.
Action: Council voted to award the purchase to Westech Engineering LLC for $522,191. The meeting transcript records the motion and its passage but does not provide a roll‑call vote listing individual votes.
What’s next: staff and HDR will proceed with delivery and installation scheduling and continue the larger grant‑funded plant rehabilitation project.
