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Riverton clears $2.36M taxiway rehabilitation bid, accepts state wastewater-sampling contract
Summary
Council approved a contingency award for taxiway D rehabilitation and lighting (Century Companies bid $2,362,537.50, with a supplemental discount to reduce the city match) and accepted a Wyoming Department of Health wastewater-sampling agreement that pays the city $93,600 upfront for bi-weekly samples through 2029.
Riverton — The City Council on May 19 approved two items affecting public infrastructure: a conditional award for taxiway D rehabilitation and lighting at Central Wyoming Regional Airport and a wastewater‑sampling agreement with the Wyoming Department of Health.
Airport: Staff presented the single responsive bid from Century Companies, Inc. of $2,362,537.50 for full rehabilitation of taxiway D and replacement of the airfield lighting with LED fixtures. A supplemental agreement delivered the afternoon of the meeting was represented as a negotiated reduction of $212,778.80; with grant and other funding applied the city's local match would be reduced to roughly $7,353.71. Council approved the bid award contingent on execution of the supplemental agreement.
Wastewater sampling: City staff described a three‑year agreement with the Wyoming Department of Health to collect wastewater samples at the treatment plant twice weekly and ship them to a state lab for analysis; the Department of Health would provide materials, shipping labels and a lump-sum payment of $93,600 up front to cover sampling and shipping through July 31, 2029. Staff said those data would be publicly released by the state, similar to past wastewater surveillance work performed during the COVID years.
City staff and council members said both actions aimed to reduce long‑term maintenance costs (LED lighting versus frequent bulb replacements) and to leverage state resources for public-health monitoring without local cost. "This project upgrades the lighting to LED and builds conduit that will help other airport projects," Mr. Tolman said. "The Department of Health is paying for the sampling materials and shipping; the city provides the sampling labor and the state will publish results."
What happens next: Staff will finalize and sign the supplemental agreement with the airport contractor and proceed with grant reimbursements and project scheduling; the wastewater sampling contract will be executed and sampling will begin on the agreed schedule.
