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.
From the Associated Press:
A West Virginia natural gas driller will pay $177,500 to settle charges it disturbed wetlands and streams while building well pads and pipelines in Harrison County.
The Environmental Protection Agency announced the terms of an administrative consent order with PDC Mountaineer of Bridgeport on Thursday.
It requires the company to restore wetlands and complete mitigation projects at four sites associated with the D'Annunzio and Hudkins well pads.
PDCM does not admit any wrongdoing.
EPA says the driller failed to obtain federal permits required to disturb or fill wetlands and streams. Further investigation found it had committed other violations while building two pipelines.
In all, EPA says about 1,500 feet of stream was permanently affected, while 3,000 feet was temporarily damaged.
The wetlands and streams ultimately flow into the West Fork River.