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Hill Air Force Base officials update Layton City on PFAS groundwater investigation
Summary
Air Force project manager Jared Case briefed the Layton City Council on ongoing investigations into PFAS (PFOS/PFOA) contamination around Hill Air Force Base, describing sampling, cleanup steps under CERCLA and EPA drinking-water rules, and interim protections for private wells where needed.
Jared Case, project manager for the Hill Air Force Base cleanup program, told the Layton City Council on May 15 that the Air Force is expanding its investigation into per- and polyfluoroalkyl substances (PFAS) found in shallow groundwater near the base.
Case said the Air Force has identified multiple areas of firefighting-foam use and other potential sources and is in the remedial-investigation phase to determine “the nature and extent” of contamination. He noted the EPA finalized a drinking-water rule in April 2024 that sets maximum contaminant levels for several PFAS chemicals and that the Defense Department is using those levels to guide sampling and response work.
The presentation outlined the scope of sampling and mapping completed to date, and the distinction between “legacy” contaminants such as chlorinated solvents and the PFAS detections. Case…
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