Chief Oil & Gas Participating in National Registry of Hydraulic Fracture Chemicals Used at Natural Gas Wells

Chief today announced they are providing information to a national online registry for the voluntary disclosure of hydraulic fracturing additives.

Registry to provide information from oil and gas companies nationwide

DALLAS, TX (April 11, 2011) – Chief Oil & Gas LLC ("Chief") today announced they are providing information to a national online registry for the voluntary disclosure of hydraulic fracturing additives. Chief joins oil and gas companies nationwide who have signed up for the registry, a joint effort of the Interstate Oil & Gas Compact Commission and the Ground Water Protection Council.

The registry will allow the public to access information on the components of the fluids used in each well drilled. The registry will be searchable by state, county, well operator or well number at www.fracfocus.org.

Chief has voluntarily disclosed, on its website, detailed information about the additives used in the hydraulic fracturing process since October 2010. Chief also voluntarily submitted reports to the Pennsylvania Department of Environmental Protection (PADEP).

“The registry is a great tool for the industry and for the public,” said Kristi Gittins, Vice President of Public Affairs for Chief Oil & Gas. “While Chief has been voluntarily disclosing this information since 2010, we hope that the widespread adoption of this practice by the industry will help to assure the public that our operations are safe and increase the open, honest and transparent communication that are key values at Chief.”

For more information about the registry, click here to read the press release from the Interstate Oil & Gas Commission (IOGCC) and the Ground Water Protection Council (GWPC).

About Chief Oil & Gas LLC

Based in Dallas, Texas, Chief Oil & Gas is a privately held, independent oil & gas company engaged in the exploration, development and production of oil and natural gas throughout the continental United States. For more information, visit chiefog.com.