OPERATORS · TEXAS · P-5 NUMBER 126045

Calto Operating Company, Inc.

14 PERMITS · PAGE 1 OF 1 · BY ISSUE DATE

Issued	Permit	Type	County	Lease / well	Depth	Status	API	Operator change
Sep 11, 2003	536227	Drill	Leon	Helmcamp #3	10,500	Final completion	28931385	Now Atlas Operating LLC
Apr 30, 2003	530957	Recompletion	Leon	Guinn Gas Unit #2	10,516	Final completion	28931295	Now Atlas Operating LLC
Apr 26, 2001	507814	Recompletion	Leon	J. R. Montgomery Gas Unit #1	10,610	Final completion	28930400	Now Atlas Operating LLC
Jan 26, 2001	504145	Recompletion	Leon	Helmcamp #1	10,300	Final completion	28930075	Now Atlas Operating LLC
Nov 1, 2000	501379	Drill	Leon	Montgomery, J. R. #2	10,650	Final completion	28931338	Now Atlas Operating LLC
Dec 14, 1999	490191	Drill	Leon	Hill, A. G. #3	10,600	Final completion	28931309	Now Atlas Operating LLC
Feb 4, 1999	482371	Recompletion	Leon	A. G. Hill Gas Unit #1	10,020	Final completion	28930061	Now BRG Lone Star Ltd.
Oct 30, 1998	480516	Drill	Leon	Guinn Gas Unit #2	10,600	Final completion	28931295	Now Atlas Operating LLC
Apr 24, 1998	475169	Recompletion	Leon	Helmcamp #1	10,300	Final completion	28930075	Now Atlas Operating LLC
Apr 13, 1998	475087	Drill	Leon	Sharp, A. L. et Al #2	10,400	Final completion	28931289	Now Atlas Operating LLC
Jun 13, 1997	463712	Drill	Leon	Helmcamp #2	10,400	Final completion	28931270	Now Atlas Operating LLC
Jul 25, 1995	438190	Recompletion	Leon	A. L. Sharp et Al #1	10,270	—	28930086	Now Atlas Operating LLC
Dec 11, 1990	381818	Recompletion	Leon	Charles A. McCormick Gas Unit #1 #2	10,440	Final completion	28930578	—
May 11, 1984	238789	Drill	Leon	Chas. A. McCormick Gas Unit NO 1 #2	10,500	Final completion	28930578	Acquired from Calto Oil Co.