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City reviews final Casper Aquifer monitoring plan, staff to seek proposals and budget for implementation
Summary
City staff and Trihydro presented a final well‑monitoring network for the Casper Aquifer recommending sentinel and background wells, a two‑year baseline sampling cadence, and an estimated first‑two‑year annual cost of about $85,000; staff said they will post the draft for public comment and return to council for adoption.
The Laramie City Council on April 14 heard a final report from Trihydro proposing a Casper Aquifer monitoring network intended to establish baseline water‑level and water‑quality data, detect contaminants early, and identify sentinel wells to protect production wells.
The plan, presented by Trihydro project manager Ryan Athey and introduced by city water staffer Ben Plaven, recommends a network that combines about 13 source‑area wells sampled quarterly for two years and additional lower‑priority wells sampled less frequently. Athey said that the monitoring would track major cations and anions, total dissolved solids, metals, field parameters and nitrates — the latter already detected above the EPA maximum contaminant level of 10 mg/L in some locations — and that targeted suites (total petroleum hydrocarbons, pesticides) would be analyzed annually where…
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