EPA Region 6 Main Office
1445 Ross Avenue, Suite 1200
Dallas, Texas 75202
800-887-6063

Houston Laboratory:
10625 Fallstone Road
Houston, TX 77099
281-983-2100

EPA Border Office
4050 Rio Bravo, Suite 100
El Paso, TX 79902
915-533-7273

Oklahoma Field Office
US EPA
1645 South 101 East Avenue
Room 134
Tulsa OK 74128-4629