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Local residents seek additional information about groundwater contamination at booths manned by local health, science and administrative authorities during a meeting at Medical Lake High School, Medical Lake, Wash. May 23, 2017. Fairchild Air Force Base leadership and environmental specialists, in an act of transparency to the local community, arranged a public meeting and information-sharing session to help inform residents.The ongoing sampling efforts on and around Fairchild AFB are part of a proactive and comprehensive site inspection program to determine if, and to what extent, past base activities contributed to elevated levels of PFOS/PFOA in groundwater. PFOS/PFOAs are unregulated compounds and are classified by the EPA as "emerging contaminants." (U.S. Air Force photo / Airman 1st Class Ryan Lackey)

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Photo by: A1C Ryan Lackey |  VIRIN: 170523-F-HU835-136.JPG