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Board: Petersburgh testing finds low GenX levels; quarterly/POE testing plan discussed
Summary
Officials said new tests detected very low GenX amounts and described a monitoring schedule: monthly sampling on the GAC treatment system and quarterly well testing; the board urged state advocacy to expand point-of-entry testing using methods that detect GenX.
Petersburgh officials told the board they have expanded testing to include GenX in addition to PFOA, and reported very low detections in recent samples.
"We are now doing testing not only for PFOA, but for Gen X," said Committee member (Speaker 2), who summarized the town's sampling plan and interactions with county and state agencies. Board members said GenX had not migrated into the aquifer feeding the water district at concerning levels. Speaker 2 noted the town will test the GAC treatment system monthly and sample wells every three months; he added that point-of-entry or POE systems (referred to in the meeting as "poets") are tested less frequently and urged advocacy for POE testing with EPA Method 543 because the commonly used 517 method does not detect GenX.
During the discussion a participant cited measured amounts as "very low," roughly "200, 400 parts per trillion" in conversational remarks; officials emphasized the need to understand possible migration pathways and to press for broader testing of home POE systems in areas closer to the Taconic site. The board agreed to continue monthly monitoring of the GAC system and quarterly well testing and to advocate to county/state partners for expanded POE testing methods.
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