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DNR authorizes public hearings on proposed numeric groundwater PFAS standards after updated DHS recommendations
Summary
The board approved a preliminary public hearing and comment period to begin formal rulemaking aimed at setting numeric groundwater standards for PFAS as recommended by the Department of Health Services and informed by federal guidance. The action will open NR 140 rulemaking and allow public comment on draft numeric levels and implementation.
The Natural Resources Board voted Feb. 20 to authorize a preliminary public hearing and comment period for a scope statement to update NR 140 and set numeric groundwater standards for per- and polyfluoroalkyl substances (PFAS). The department said the action follows updated Department of Health Services recommendations received in January 2025 and recent federal guidance on PFAS.
Why it matters: Numeric groundwater standards under NR 140 would guide cleanup expectations, liability triggers for regulated parties and thresholds used in permitting and enforcement. The proposed NR 140 updates will…
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