Commissioners question sampling frequency and redrill reliability after staff presentation
Jun 3, 2026
Commissioners pressed staff on sample-size reliability and redrill histories, citing an El Paso County study; staff suggested over-sampling border areas and agreed to provide a redrill spreadsheet for further analysis.
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Commissioners voiced concerns about whether the planned sample size would yield usable long-term data, referencing an El Paso County study they reviewed. The chair noted that El Paso's experience included a larger monitoring set but low usable-data yield: "El Paso is...they had 96 wells, and only 0.5 of them provided useful data," the chair said. Commissioners asked whether the county should initially over-monitor or double up wells in key areas to account for potential fall-out from participant drop-off.
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