References

Ms. Amy Jolley

General Counsel

Nobel Energy, Inc. 100 Glenborough Drive, Suite 100 Houston, TX 77067

(281) 943-1574

ajolly@nblenergy.com

Mr. Cameron George

Director of Finance

LINN Energy, LLC 600 Travis Street Houston, TX 77002

(281) 840-4000

cg@linnenergy.com

Mr. Preston Venable

Tax Manager

Ultra Petroleum Corporation 400 N. Sam Houston Parkway East Houston, TX 77060

(281) 582-6619

pvenable@ultrapetroleum.com

Mr. Mark Bonner

SVP, Business Development

ConocoPhillips Company 600 North Dairy Ashford, ML 3034 Houston, TX 77079

(281) 293-3287

mark.bonner@conocophillips.com

Mr. Darin Holderness

Chief Financial Officer

Concho Resources Inc. 600 West Illinois Ave. Midland, TX 79701

(432) 683-7443

dholderness@concho.com

Mr. Brandon Smith

Tax Director

Anadarko Petroleum Corporation 1201 Lake Robbins Drive The Woodlands, TX 77380

(832) 636-1176

brandon.smith@anadarko.com

Mr. Austin Murr

Senior Vice President, Business Development

QEP Resources, Inc. 1050 17th Street, #800 Denver, CO 80265

(303) 672-6900

austin.murr@qepres.com

Ms. Jennifer Stewart

Vice President, Tax

Southwestern Energy 10000 Energy Drive Spring, TX 77389

(832) 796-7770

jennifer_stewart@swn.com

Mr. Jon Sauer

Senior Vice President, Tax

Apache Corporation 2000 Post Oak Blvd, Suite 100 Houston, TX 77056

(713) 296-6180

jon.sauer@apachecorp.com

Mr. Dennis Johnson

Chairman and CEO

Summit Petroleum 550 W. Texas, Suite 700 Midland, TX 79701

(432) 682-9800

djohnson@summitpetroleumllc.com