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West Yellowstone council OKs engineering studies for lift station expansion and infiltration basins tied to 80‑acre plan

Town Council, Town of West Yellowstone · December 3, 2025
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Summary

Council approved a $10,000 rapid infiltration basin capacity study and a $16,000 predesign for expanding the IRIS lift station to assess wastewater capacity needed for the town’s 80‑acre development planning.

The West Yellowstone town council voted to fund two engineering predesign studies intended to clarify wastewater conveyance and disposal needs associated with planned growth in the 80‑acre area.

Kyle, the remote consultant, told the council these are preliminary but necessary steps: the rapid infiltration basin (RIB) capacity analysis (estimated $10,000) will evaluate where and when the town needs additional infiltration cells or conversion of existing treatment cells to infiltration basins so effluent disposal can match future flows. The lift‑station predesign (estimated $16,000) will analyze options for expanding the IRIS lift station — either upgrading pumps or supplementing with an additional station — and produce a construction cost estimate to inform planning for future development.

Councilor [motion maker] moved and the council seconded both motions. For the RIB capacity study the council approved the $10,000 proposal; for the lift‑station predesign the council approved the $16,000 proposal. Staff confirmed the town attorney has reviewed the proposals.

Kyle said the study outcomes will enable the town to issue more accurate capacity letters for future hookups, produce schedule and cost options for pump upgrades versus a new station, and help determine the timing for converting treatment cells to infiltration basins. He added that the analyses will be coordinated with plant staff so design and permitting considerations align with the treatment plant expansion.