ACCEPTED 03-14-00257-CV 4873387 THIRD COURT OF APPEALS AUSTIN, TEXAS 4/14/2015 8:31:59 AM JEFFREY D. KYLE CLERK FREDERICK, PERALES, ALLMON & ROCKWELL, P.C. FILED IN 3rd COURT OF APPEALS Rio Grande, Suite 200 AUSTIN, TEXAS Austin, TX 78701 4/14/2015 8:31:59 AM (512) 469-6000 Phone JEFFREY D. KYLE Clerk (512) 482-9346 Fax April 14, 2015 Mr. Jeffrey D. Kyle, Clerk of the Third Court of Appeals via e-file Price Daniel, Sr. Building, Room 101 W. 14th Street Austin, Texas 78701 Re: Court of Appeals No. 03-14-00257-CV; Maverick County, et. al., v. Railroad Commission of Texas, et. al..

Dear Mr. Kyle: In response to your letter dated March 24, 2015, please know that I intend to argue the above-referenced case before the Court on May 20, 2015 at 9:00 AM, on behalf of Appellant Maverick County. Please feel free to contact me if you have any questions.

Sincerely, /s/ David Frederick David Frederick Frederick, Perales, Allmon & Rockwell, P.C.

707 Rio Grande, Ste. 200 Austin, Texas 78701 (512) 469-6000 (512) 482-9346 (facsimile) [email protected] CERTIFICATE OF SERVICE By my signature below, I certify that on this 14th day of April, 2015, a copy of the foregoing document was served upon the parties identified below via electronic service.

/s/ David Frederick David Frederick FOR APPELLEES DOS FOR APPELLANT CITY OF REPUBLICAS COAL EAGLE PASS: PARTNERSHIP, CAMINO REAL Heriberto Morales Jr. FUELS, LLC, AND NORTH Stephen J. Ahl AMERICAN COAL COMPANY: Langely & Banack, Inc. Bill Cobb 401 Quarry St. Chesley N. Blevins Eagle Pass, TX 78852 Jackson Walker LLP Telephone (830) 773-6700 Congress Ave., Ste. 1100 Facsimile (830) 757-4045 Austin, TX 78701 [email protected] Telephone (512) 236-2326 [email protected] Facsimile (512) 691-4446 [email protected] FOR APPELLANT MAVERICK [email protected] COUNTY HOSPITAL DISTRICT: Celeste Lira FOR APPELLEE RAILROAD Brin & Brin COMMISSION OF TEXAS: 6223 IH-10 West Cynthia Woelk San Antonio, TX 78201 Nancy E. Olinger Telephone (210) 341-9711 Office of the Attorney General Facsimile (210) 341-1854 P.O. Box 12548 [email protected] Austin, TX 78711-2548 Telephone (512) 453-2012 Facsimile (512) 457-4613 [email protected] [email protected]

FOR APPELLANTS MAVERICK COUNTY ENVIRONMENTAL AND PUBLIC HEALTH ASSOCIATION AND GEORGE BAXTER: Javier Riojas Texas RioGrande Legal Aid, Inc. E. Main P.O. Box 2001 Eagle Pass, TX 78853 Telephone (830) 752-6400 Facsimile (830) 773-5806 [email protected] Enrique Valdivia Texas RioGrande Legal Aid, Inc. 1111 N. Main Avenue San Antonio, TX 78212 Telephone (210) 212-3700 Facsimile (210) 212-3772 [email protected] Thomas M. Weber Paul R. Tough McElroy, Sullivan, Miller, Weber & Olmstead, LLP P.O. Box 12127 Austin, TX 78711 Telephone (512) 327-8111 Facsimile (512) 327-6566 [email protected] [email protected]