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Commission hears update: new GAC filters nearly finished, sewer/water extension plans under review

Green River Planning Commission · November 18, 2025
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Summary

Staff said granulated activated carbon filters at the water treatment plant are nearly complete and will improve filtration; commissioners also reviewed multiple routing options for an industrial attendee's sewer/water extension and discussed capacity implications.

Speaker 2 told the commission the new granulated activated carbon (GAC) filters at the water treatment plant are near completion and "are going to help clean our very muddy, soupy water during April and October when we see the most sediment." Staff explained the GAC filters sit ahead of existing sediment and sand filter media and likely will speed processing though they do not directly increase existing core filter capacity.

Commissioners then discussed a proposed water and sewer extension to serve a tenant/development. Staff outlined five routing options (including connections via Elgin Avenue, a railroad bridge or from the plant) and said engineering work and preliminary council approval are in place; some funds are described as promised but the release depends on lab/sample documentation. Speaker 1 asked whether expanded onsite treatment or sewer routing would increase capacity; staff said the new filters improve treatment but capacity increases would require additional infrastructure.

Separately, Speaker 1 described a small, locally proposed algae‑based treatment pilot (company name spoken as "Air Air Village") that a presenter has developed and is awaiting university lab materials to qualify before funding is released.

Ending: Staff to continue engineering work, confirm funding and sample documentation for the sewer/water extension and report timing of any capacity upgrades.