Col. Douglas Schiess, 21st Space Wing commander, answers questions during a press conference at Peterson Fire Station 1, Wednesday, Nov. 2, 2016, at Peterson Air Force Base in Colorado Springs, Colo. Wastewater tainted with toxic chemicals used in firefighting foam originally thought to have been discharged by the Air Force into Colorado Springs' wastewater treatment system likely evaporated into the air in hot weather, officials said Wednesday following an investigation. Schiess said that 20,000 gallons of wastewater disappeared at Peterson Air Force Base over an undetermined period of time, but "evaporation was determined to be the likely culprit," rather than a discharge. (Christian Murdock/The Gazette via AP)
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