Xtreme Energy Co., headquartered in Victoria, Texas, has been ordered by the Pennsylvania Dept. of Environmental Protection (DEP) to shut down/stop producing at two Marcellus wells operated by the company located in Somerset County, PA, in the southwestern part of the state. Why? Because, says the DEP, Xtreme has not paid its impact fee (i.e. severance tax) for those wells for 2014, 2015 and 2016.