The Pennsylvania Department of Environmental Protection (DEP) has reversed its approval of an underground injection well in Indiana County. The agency approved Pennsylvania General Energy's (PGE) permit to operate the well late last year after the U.S. Environmental Protection Agency (EPA) signed off on its plan to convert an old natural gas well to accept waste generated during the hydraulic fracturing (fracking) process. The EPA has primacy over Class II injection wells in the state, but DEP was also required to approve the conversion plan. Residents in Grant Township, where a ban on injection wells passed last year, filed an appeal. DEP said the well violated regulations in the state's Clean Streams Law and added that it had not taken those into consideration when it approved the permit. PGE has filed a federal lawsuit against the town's ban, which is expected to be heard next month.