Sonterra Operating, Inc.

1 PERMIT · PAGE 1 OF 1 · BY ISSUE DATE

Issued	Permit	Type	County	Lease / well	Depth	Status	API	Operator change
Jun 25, 1990	374716	Drill	Starr	Silva #1	13,000	Final completion	42732423	Acquired from Tesoro Expl. & Prod. Company