Workers drill one of 17 test sites for firefighting foam-tainted water around Peterson Air Force Base and the Colorado Springs, Colo., Airport Wednesday, Nov. 2, 2016. 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. (Christian Murdock/The Gazette via AP)
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