This summer, a study released by the Environmental Working Group determined PFAS had been detected at several different military bases in Maryland bordering the Chesapeake Bay, including the Army’s Aberdeen Proving Ground, the Air National Guard Base at Martin State Airport in Middle River and the U.S. Naval Academy in Annapolis, as well as Southern Maryland’s U.S. Naval Research Laboratory’s Chesapeake Bay Detachment and Blossom Point Tracking Facility and the Naval Air Station Patuxent River. Some of those detections were under the EPA’s threshold, like at Aberdeen, but others soared above it. A reading at the Naval Research Laboratory, for instance, found 234,000 parts per trillion of one PFAS chemical in groundwater.