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District reports PFAS sampling progress; one local sewage-sample returned 10 ppt PFOA
Summary
Operations Manager Matt Brooks updated the board on PFAS sampling and agency coordination; he said some lab results are pending, EPA finished-water samples are awaited, and a sample from an Arrowhead Lake Association bathroom returned 10 parts-per-trillion for PFOA.
Operations Manager Matt Brooks presented an amended PFAS update and said staff have received some laboratory results while others remain pending. He told the board the District is "awaiting the finished water samples taken for the EPA" and has met with the Department of Drinking Water and consultant N2W on preliminary designs to reduce issues during project implementation.
Brooks reported a sample taken after a small sewage spill at an Arrowhead Lake Association bathroom on Burnt Mill Bay returned "10 parts per-trillion for PFOA." He also said a voluntary influent sample at the Grass Valley Wastewater Treatment Plant taken Aug. 22 is pending. The board received public comment during the PFAS discussion; staff will continue sampling and work with state and federal agencies as results become available.
