 11/12/2015 | Closed | CWA 06-2016-4501 Sandridge Energy |
| 11/12/2015 | Closed | CWA 06-2016-4502 Manson Construction |
| 11/10/2015 | Closed | CERCLA 06-2016-2901 Shintech Louisiana, LLC |
| 11/05/2015 | Closed | CWA 06-2016-4304 Clearly Petroleum, LLC |
| 11/03/2015 | Closed | CAA 06-2015-3337 Eagle US 2 LLC |
| 11/03/2015 | Closed | CWA 06-2016-4301 Explo Oil, Inc. |
| 11/02/2015 | Closed | CAA 06-2015-3364 KMCO LLC |
| 10/29/2015 | Closed | FIFRA 06-2016-0305 Wellmark International dba Central Life Science |
| 10/27/2015 | Closed | CAA 06-2015-3501 City of Tyler Lake Palestine Water Treatment Plant |
| 10/27/2015 | Closed | CAA 06-2015-3502 Sachem, Inc. |
| 10/23/2015 | Closed | CAA 06-2015-3326 East West Copolymer, LLC |
| 10/20/2015 | Closed | CWA 06-2015-4819 Fieldwood Energy LLC Grand Bay Field Facilities |
| 10/15/2015 | Closed | CAA 06-2015-3525 The Dodge Company |
| 10/15/2015 | Closed | CAA 06-2015-3324 COG Operating LLC |
| 10/15/2015 | Closed | CAA 06-2015-3353 DCP Midstream, LP |
| 10/14/2015 | Closed | CAA-06-2016-0002 Pecos Gas Plant |
| 10/14/2015 | Closed | CAA 06-2015-3354 Halcon Resources Corporation and its subsidiary Halcon Operating Co., Inc. |
| 10/14/2015 | Closed | CAA 06-2015-3526 Pecos Gas Plant |
| 10/14/2015 | Closed | EPCRA 06-2015-0512 Superior COS Machining & Fabrication Division |
| 10/09/2015 | Closed | CWA 06-2015-2709 Atlanta Exploration Company |
| 10/08/2015 | Closed | FIFRA 06-2016-0304 Global Environmental Restoration, Inc. |
| 10/07/2015 | Closed | CWA 06-2015-4328 Warren American Oil Company |
| 09/30/2015 | Closed | EPCRA 06-2015-0511 Republic Industries, Inc. |
| 09/30/2015 | Closed | RCRA 06-2015-0936 Flowchem Technologies |
| 09/29/2015 | Closed | CAA 06-2015-3363 K-Solv, L.P. |
| 09/23/2015 | Closed | EPCRA 06-2015-0506 Toyota Motor Manufacturing |
| 09/23/2015 | Closed | EPCRA 06-2015-0513 The United States Department of the Army, McAlester Army Ammunition Plant |
| 09/23/2015 | Closed | RCRA 06-2015-0904 PERGAN MARSHALL LLC |
| 09/23/2015 | Closed | RCRA 06-2015-0923 UHS Of TEXOMA MEDICAL, INC. |
| 09/23/2015 | Closed | RCRA 06-2015-0941 BADDLEY CHEMIALS, INC. |
| 09/17/2015 | Closed | FIFRA 06-2015-0325 Control Solutions, Inc. |
| 09/17/2015 | Closed | RCRA 06-2015-0937 ALS Group, USA Corp D/B/A ALS Environmental |
| 09/16/2015 | Closed | CWA 06-2015-4312 Oklahoma Oil and Gas Management, Inc . |
| 09/16/2015 | Closed | CWA 06-2015-4324 OTC Investors, Inc. |
| 09/16/2015 | Closed | CWA 06-2015-4329 The Braden Companies |
| 09/14/2015 | Closed | CWA 06-2015-4326 Warren American Oil Company, LLC |
| 09/14/2015 | Closed | CWA 06-2015-4327 Warren American Oil Company, LLC |
| 09/10/2015 | Closed | CWA 06-2015-4317 Silvertin Farm Production, LLC |
| 09/10/2015 | Closed | FIFRA 06-2015-0328 PPM Services |
| 09/09/2015 | Closed | RCRA 06-2015-0919 Chevron U.S.A. Inc. |
| 09/09/2015 | Closed | RCRA 06-2015-0921 McAllen Hospitals L.P. |
| 09/09/2015 | Closed | RCRA 06-2015-0922 Laredo Regional Medical Center, L.P. |
| 09/09/2015 | Closed | SDWA 06-2015-1145 McCann Resources, Inc. |
| 09/03/2015 | Closed | CAA 06-2015-3348 Marathon Petroleum Company, LP |
| 09/01/2015 | Closed | EPCRA 06-2015-0510 Modern Investment Casting Co. |
| 08/31/2015 | Closed | CWA 06-2015-4808 Poydras Energy, LLC |
| 08/27/2015 | Closed | FIFRA 06-2015-0308 Crop Production Services |
| 08/26/2015 | Closed | CWA 06-2015-4319 BMC Petroleum, Inc. |
| 08/26/2015 | Closed | EPCRA-06-2015-0004 US Plating LP |
| 08/24/2015 | Closed | CAA 06-2015-3340 Boise Packaging & Newsprint, LLC |
| 08/24/2015 | Closed | CWA 06-2015-4320 R.M. Hill Operating, Inc. |
| 08/24/2015 | Closed | CWA 06-2015-4852 Lime Rock Resources |
| 08/20/2015 | Closed | CWA 06-2015-4820 Saratoga Resources, Inc. |
| 08/20/2015 | Closed | CWA 06-2015-4821 Saratoga Resources Inc. |
| 08/20/2015 | Closed | CWA 06-2015-4822 Saratoga Resources Inc. |
| 08/20/2015 | Closed | FIFRA 06-2015-0315 Tillman Producers Coop. |
| 08/20/2015 | Closed | RCRA 06-2015-0926 Berry Contracting LP D/B/A Bay Ltd-Offshore Division |
| 08/18/2015 | Closed | CWA 06-2015-1325 Glacier Petroleum Company |
| 08/13/2015 | Closed | CWA 06-2015-4311 Oklahoma Oil and Gas Management, Inc. |
| 08/13/2015 | Closed | CWA 06-2015-4823 W. Cote Blanche Bay |
| 08/12/2015 | Closed | CAA-06-2015-3515 IMTT-Geismar |
| 08/12/2015 | Closed | CAA 06-2015-3515 IMTT-Geismar |
| 08/12/2015 | Closed | CAA 06-2015-3516 United States Cold Storage, Dallas |
| 08/12/2015 | Closed | RCRA 06-2015-0920 Northwest Texas Healthcare System, Inc. |
| 08/12/2015 | Closed | RCRA 06-2015-0924 Fort Duncan Medical Center, L.P. |
| 08/12/2015 | Closed | RCRA 06-2015-0938 McAllen Hospitals, L.P. |
| 08/12/2015 | Closed | RCRA 06-2015-0939 McAllen Hospitals, L.P. |
| 08/12/2015 | Closed | RCRA 06-2015-0940 E&M Supply Group |
| 08/10/2015 | Closed | CWA 06-2015-4809 Chaparral Energy Company |
| 08/10/2015 | Closed | CWA 06-2015-4816 Linn Energy Holdings, LLC |
| 07/30/2015 | Closed | CAA 06-2015-3512 Dallas Central Wastewater Treatment Plant |
| 07/30/2015 | Closed | RCRA 06-2015-0925 Bethyl Laboratories, Inc. |
| 07/30/2015 | Closed | SDWA 06-2015-1140 Performance Energy Resources, LLC |
| 07/29/2015 | Closed | CWA 06-2015-4810 Chaparral Energy Company |
| 07/28/2015 | Closed | CWA 06-2015-4817 Cathexis Oil & Gas S/L 20878 Central Facility |
| 07/27/2015 | Closed | CAA 06-2015-3505 Sysco Arakansas |
| 07/23/2015 | Closed | CAA 06-2015-3338 Associated Electric Cooperative, Inc. Dell Power Plant |
| 07/22/2015 | Closed | CAA 06-2015-3343 UOP LLC |
| 07/22/2015 | Closed | CWA06-2015-1756 Wapiti Operating, LLC |
| 07/21/2015 | Closed | EPCRA 06-2015-0508 SCHREIBER FOODS, INC. |
| 07/21/2015 | Closed | FIFRA 06-2015-0327 JOTUN PAINTS, INC. |
| 07/21/2015 | Closed | RCRA 06-2015-0914 BAYLOR COLLEGE OF MEDICINE |
| 07/14/2015 | Closed | SDWA 06-2015-1130 Xutapa Properties, LLC |
| 07/08/2015 | Closed | SDWA 06-2015-1125 Steve & Shelly Cornelius |
| 07/02/2015 | Closed | CWA 06-2015-4318 Krumme Oil Company, LLP |
| 07/02/2015 | Closed | CWA 06-2015-4501 Oneok Field Services |
| 07/01/2015 | Closed | CAA-06-2013-3342 Western Refining Company, L.P. |
| 07/01/2015 | Closed | CAA-06-2015-3327 Western Refining Company, L.P. |
| 07/01/2015 | Closed | CAA 06-2015-3304 Alta Mesa Services, LP |
| 06/25/2015 | Closed | CAA 06-2015-3319 Capitol Aggregates, Inc. |
| 06/24/2015 | Closed | CWA 06-2015-4500 DCP Midstream |
| 06/24/2015 | Closed | CWA 06-2015-4813 Louisiana Energy & Environmental Inc. |
| 06/24/2015 | Closed | CWA 06-2015-4814 Texas Petroleum Investment Co. |
| 06/23/2015 | Closed | CWA 06-2015-1754 Southwest Operating, Inc. |
| 06/16/2015 | Closed | CAA 06-2015-3510 City of Del City Water Treatment Plant |
| 06/16/2015 | Closed | CWA 06-2015-4811 Standard Operating Company Bayou Sorrell Field |
| 06/10/2015 | Closed | CWA-06-2015-1777 Albuquerque Bernalillo County Water Utility Authority |
| 06/10/2015 | Closed | EPCRA 06-2015-0507 Georgia-Pacific LLC |
| 06/02/2015 | Closed | CAA 06-2015-3511 Balchem Corporation |
| 06/02/2015 | Closed | CWA 06-2015-4316 Holmes Oil Company |
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