The Pennsylvania Department of Conservation and Natural Resources has refined its definitions of what constitutes surface disturbances tied to drilling for oil and natural gas.
The new definitions were released as the state moved toward allowing drilling on state-owned land including state forests and parks.
Drillers would have to pay the state $3,000 an acre in signing bonuses plus royalties of 18 percent.
Click here to read more from the Pittsburgh Post-Gazette.
Chesapeake Energy Corp,the Oklahoma-based firm is the No. 1 driller in Ohio.
Rig Count Interactive Map by Baker Hughes, an energy services company.
Shale Sheet Fracking, a Youngstown Vindicator blog.
The Ohio Environmental Council, a statewide eco-group based in Columbus.
Earthjustice, a national eco-group.
People's Oil and Gas Collaborative-Ohio, a grass-roots group in Northeast Ohio.
Concerned Citizens of Medina County, a grass-roots group.
No Frack Ohio, a Columbus-based grass-roots group.
Fracking: Gas Drilling's Environmental Threat by ProPublica, an online journalism site.
Pipeline, blog from Pittsburgh Post-Gazette on Marcellus shale drilling.
Allegheny Front, environmental public radio for Western Pennsylvania.