Pavillion

In recent years, perhaps nothing in the world of natural resources has been more controversial than the debate over hydraulic fracturing or "fracking." The national debate has been especially significant in Wyoming, where contaminated groundwater near Pavillion was linked to chemicals used in fracking.

The Wyoming Department of Environmental Quality says preliminary results from an air monitoring station in an area several miles east of Pavillion did not reveal pollution levels exceeding federal standards. The state agency installed a mobile monitoring station that began collecting data Jan. 27, 2011, on land in the Pavillion area downwind of gas development equipment and infrastructure.