FILE - In this May 27, 2016, file photo, tanks sit near a housing development off state highway 119 near Firestone, Colo. The proximity of homes and schools to oil and gas facilities is often a contentious issue in Colorado and has become an issue in the November election. Gubernatorial candidates Walker Stapleton, a Republican, and Jared Polis, a Democrat, outlined their energy policies on Wednesday, Aug. 22, 2018, at a meeting of the Colorado Oil and Gas Association in Denver. (AP Photo/David Zalubowski,File)
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