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.
According to Inside EPA, the agency is said to be developing a guidance for states on how to mitigate potential seismic risks associated with injection wells that handle briny wastewater from drilling for natural gas and oil.
That comes in the wake of a dozen quakes near Youngstown since last March that are believed to be caused by an injection well.
The federal agency intends to craft a report on the recent Ohio activity that will provide guidance for states and regional offices to improve their consideration of seismic activity when permitting and maintaining injection wells.
The federal agency is not expected to proposed any regulatory changes.
Some eco-groups were pushing to have the agency reverse a long-standing exemption excluding oil and gas wastewater from the definition of hazardous waste in an effort to force stricter regulations on disposal practices. But that appeared unlikely to happen, the publication said.