Harold Westfall of Barber County, West Virginia, walks across the site of a Rice Energy Marcellus shale drilling rig in Lone Pine, Washington County, on Jan. 19, 2011. The rig seen here drilled to a depth of 7,638 feet.

Dustin Chidester of Buckhannon, West Virginia, works atop a Rice Energy Marcellus shale drilling rig in Lone Pine, Washington County, on Jan. 19, 2011.

Foam used to bring drill cuttings to the surface at a Rice Energy Marcellus shale drilling rig pours into a drill pit before being taken away for disposal in trucks in Lone Pine, Washington County, on Jan. 19, 2011.

Harold Westfall of Barber County, West Virginia, watches as foam pumps out of the ground into a containment area at the site of a Rice Energy Marcellus shale drilling rig in Lone Pine, Washington County, on Jan. 19, 2011.

Craig Stevens of Silver Lake Township, Pa., delivers his testimony while holding a jug of contaminated water from a neighbor's home in Dimock, Pa., during a Pennsylvania House of Representatives Policy Committee Hearing on Department of Environmental Protection Accountability for Marcellus Shale Environmental Testing at the Courthouse Square Building in Washington, Pa. on Tuesday, Feb. 19, 2013.

Linda Headley, 44, looks over a wellhead while guiding the Post-Gazette on a tour of fracking sites on her Springhill Township farm in Fayette County on June 19, 2013.

Beth Voyles of Washington, Pa. sits with her daughter Ashley, and one of their dogs, Diesel, while talking with the Post-Gazette at her home on McAdams Road on Thursday, May 24, 2012. Voyles and her family have been sickened by contaminated well water and air pollution since a Marcellus Shale operation began 700 feet from her home.

A crew cuts down trees on the property of Kevin and Connie McRoberts of Darlington Township on Friday, March 30, 2012, after the McRoberts lost a court battle with a drilling company over the right to use the land.

John Owsiany, left, the director of water systems and operations for Consol Energy speaks with Henry Wandrie, right, the C.O.O. of Epiphany Solar Water Systems while they look over a solar dish that will be used in a new water treatment system announced today by Epiphany Solar Water Systems and Consol Energy that will be used at Marcellus shale fracking sites to purify water after a press conference held at the Pittsburgh Technology Council's office in Oakland on Monday, June 25, 2012.

A member of the Loretto Landowner Group enters Our Lady of Loretto Community Hall in Loretto, Pa., before the start of a meeting on Wednesday, Feb. 2, 2011.

Anthony and Rose Ann Sinagoga of Imperial look over a drilling plan during a public workshop and information session at the Pittsburgh Airport Marriott hotel hosted by Consol Energy and the Allegheny County Airport Authority about oil and natural gas drilling at the Pittsburgh International Airport on Tuesday, Aug. 27, 2013.

Joshua Knicely stands at the podium as a proponent of shale drilling as residents gather for a public hearing on proposed ordinances affecting Marcellus shale drilling in Mt. Pleasant Township on Thursday, Jan. 20, 2011. Knicely is an employee of Red Oak Water Transfer, a business that could benefit economically from its use by shale drilling companies.

Joni Rabinowitz of Edgerton Avenue in PIttsburgh takes notes before speaking during a public hearing on Allegheny County's first Marcellus Shale Compressor Station Permit in building 7 of the Clack Health Center in Lawrenceville on Tuesday, March 27, 2012.

From left, Ko Watanabe of Sumitomo Corporation of America, David French of L.R. Kimball, Lee Ann Wainwright of Chief Oil & Gas, Matt Pitzarella of Range Resources Corporation, Doug Matthews of U.S. Steel, Kathryn Klaber of the Marcellus Shale Coalition, Jack Thompson of Chesapeake Energy, Gregg Troian of PGT Trucking and Jason Norris of Dura-Bond Pipe take the stage as part of a press conference about a new economic impact analysis of Marcellus Shale development in Pennsylvania at the U.S. Steel Mon Valley Works Training Hub in Duquesne, Pa. on Wednesday, July 20, 2011.

A group of protesters gather and march from the UFCW Local 23 office to the Southpointe headquarters for Range Resources to call for a gas extraction tax to help reduce cuts in education in the state's budget on Tuesday, April 19, 2011.

Barbara Barnes of Canonsburg holds an American flag after marching with a group of protesters gathered across the street from the Southpointe headquarters for Range Resources to call for a gas extraction tax to help reduce cuts in education in the state's budget on Tuesday, April 19, 2011.

Allegheny County Council member James R. Ellenbogen gestures dismissively and walks out of a public comment session as a speaker urges the Allegheny County Council to vote against allowing hydraulic fracking in Deer Lakes Park during a County Council meeting in Downtown Pittsburgh on Tuesday, May 6, 2014.

Members of the group Protect our Parks unroll 7,500 signatures from three separate petitions urging the Allegheny County Council to vote against allowing hydraulic fracking in Deer Lakes Park during a County Council meeting in Downtown Pittsburgh on Tuesday, May 6, 2014. The roll of signatures stretched three times around the council chambers.