Smog from an inversion hangs over the Utah State Capitol on Jan. 23, 2013, in Salt Lake City. The U.S. Environmental Protection Agency has singled out the greater Salt Lake region as having the nation's worst air for much of January, when an icy fog smothers mountain valleys for days or weeks at a time and traps lung-busting soot. (Associated Press)
Smog from an inversion hangs over the Utah State Capitol on Jan. 23, 2013, in Salt Lake City. The U.S. Environmental Protection Agency has singled out the greater Salt Lake region as having the nation's worst air for much of January, when an icy fog smothers mountain valleys for days or weeks at a time and traps lung-busting soot. (Associated Press)
** FILE ** In this Sept. 14, 2009 photo, Encana Corp. placed two 2400 gallon water containers inside this unit on Louis Meeks' property in Pavillion, Wyo. The ranking Republican on the Senate Environment and Public Works Committee — Oklahoma Sen. James Inhofe — is asking the head of the U.S. Environmental Protection Agency for more information about an EPA investigation into groundwater contamination in a Wyoming gas field. (AP Photo/Casper Star-Tribune, Kerry Huller)
