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Of the 209 permits in EPA's SIC 13 in WY, 22 went over a limit between 2025-10-01 and 2026-09-30 (Produced water, oil and grease: 11; Chloride: 4; Solids, total dissolved: 3); 3 have no reports in EPA's file for that window. 33 are past the expiry date EPA's file holds; 90 have a renewal application overdue or due within 18 months. EPA's file of 2026-10-15.
| Facility | Last 12 months | Permit |
|---|---|---|
| Merit Energy Company WY0001902 · Crude Petroleum And Natural Gas | Over a limit 9×: Flow (9×) | Expires Jun 30, 2030 |
| Denbury Onshore, LLC WY0002194 · Crude Petroleum And Natural Gas | Over a limit 6×: Produced water, oil and grease (5×), pH (1×) | Expires Nov 30, 2028 |
| Meerkat Logistics & Operations, LLC WY0025887 · Crude Petroleum And Natural Gas | Over a limit 5×: Radium 226 + radium 228, total (2×), Arsenic, total [as As] (1×), Solids, total dissolved (1×) | Renewal application due Nov 3, 2027 |
| Wind River Energy Commission WY0033740 · Crude Petroleum And Natural Gas | Over a limit 5×: Specific conductance (3×), Sulfate [as S] (1×), Solids, total dissolved (1×) | Permit past the expiry date EPA's file holds |
| Denbury Onshore, LLC WY0000256 · Crude Petroleum And Natural Gas | Over a limit 4×: Pass/Fail Static 48Hr Acute Daphnia Magna (2×), Chloride (1×), Pass/Fail Static 96 Hr Acute Pimephales Promelas (1×) | Expires Nov 30, 2028 |
| Bataa Oil, Inc. WY0040151 · Crude Petroleum And Natural Gas | Over a limit 3×: Specific conductance (2×), Chloride (1×) | Renewal application overdue |
| Black Bear Oil Corporation WY0000744 · Crude Petroleum And Natural Gas | Over a limit 2×: Specific conductance (1×), Chloride (1×) | Expires Dec 31, 2030 |
| Citation Oil and Gas Corporation WY0002402 · Crude Petroleum And Natural Gas | Over a limit 2×: Chloride (1×), Produced water, oil and grease (1×) | Permit past the expiry date EPA's file holds |
| Pronghorn Operation, LLC WY0056081 · Crude Petroleum And Natural Gas | Over a limit 2×: Solids, total dissolved (2×) | Renewal application due Jan 1, 2027 |
| The Daube Company WY0000272 · Crude Petroleum And Natural Gas | Over a limit 2×: Radium 226 + radium 228, total (2×) | Expires Dec 31, 2030 |
| White Rock Oil and Gas, L.L.C. WY0035491 · Crude Petroleum And Natural Gas | Over a limit 2×: Radium 226, total (1×), Produced water, oil and grease (1×) | Permit past the expiry date EPA's file holds |
| Berenergy Corporation WY0097013 · Crude Petroleum And Natural Gas | Over a limit 1×: Produced water, oil and grease (1×) | Expires Feb 28, 2029 |
| Black Thunder Oil WY0033383 · Crude Petroleum And Natural Gas | Over a limit 1×: Produced water, oil and grease (1×) | Expires Mar 31, 2030 |
| BreitBurn Operating, LP WY0002437 · Crude Petroleum And Natural Gas | Over a limit 1×: Produced water, oil and grease (1×) | Expires Oct 31, 2029 |
| Contango Resources, LLC WY0002445 · Crude Petroleum And Natural Gas | Over a limit 1×: Produced water, oil and grease (1×) | Expires Dec 31, 2029 |
| Ellbogen, John P., LTD WY0025470 · Crude Petroleum And Natural Gas | Over a limit 1×: Produced water, oil and grease (1×) | Permit past the expiry date EPA's file holds |
| NEPECO WY0030589 · Crude Petroleum And Natural Gas | Over a limit 1×: pH (1×) | Expires Oct 31, 2030 |
| PDS Resources LLC WY0024023 · Crude Petroleum And Natural Gas | Over a limit 1×: Produced water, oil and grease (1×) | Renewal application overdue |
| Rael Resources LLC WY0097009 · Crude Petroleum And Natural Gas | Over a limit 1×: Produced water, oil and grease (1×) | Expires Apr 30, 2029 |
| South Pass Petroleum Inc. WY0028860 · Crude Petroleum And Natural Gas | Over a limit 1×: Aluminum, dissolved [as Al] (1×) | Renewal application overdue |
| T2 Operating Corporation WY0001350 · Crude Petroleum And Natural Gas | Over a limit 1×: Produced water, oil and grease (1×) | Renewal application due Oct 3, 2027 |
| Wind River Energy Commission WY0000949 · Crude Petroleum And Natural Gas | Over a limit 1×: Sulfate [as S] (1×) | Permit past the expiry date EPA's file holds |
| Aethon Energy Operating LLC WY0002062 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Alpha Energy LLC WY0025780 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| Anadarko E&P Onshore, LLC WY0044164 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Feb 1, 2027 |
| Antler Energy, LLC WY0028231 · Crude Petroleum And Natural Gas | No value over a limit | Expires Nov 30, 2028 |
| Antler Energy, LLC WY0034070 · Crude Petroleum And Natural Gas | No value over a limit | Expires Nov 30, 2028 |
| Arnell Oil Company WY0024368 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| Arnell Oil Company WY0024376 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| Bareto Energy, LLC WY0000353 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 1, 2027 |
| Bareto Energy, LLC WY0026816 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 1, 2027 |
| Bareto Energy, LLC WY0026867 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jun 30, 2030 |
| Bareto Energy, LLC WY0027731 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Bareto Energy, LLC WY0031739 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Dec 3, 2027 |
| Bareto Energy, LLC WY0032051 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 2, 2028 |
| Bataa Oil, Inc. WY0022578 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Big Muddy Operating, LLC WY0000710 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Aug 4, 2027 |
| Big Muddy Operating, LLC WY0000914 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Aug 4, 2027 |
| Black Bear Oil Corporation WY0024503 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Aug 4, 2027 |
| Black Bear Oil Corporation WY0024864 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jul 4, 2027 |
| Black Bear Oil Corporation WY0031305 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due May 4, 2027 |
| Black Bear Oil Corporation WY0032255 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Black Gold Services Inc WY0001473 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| BreitBurn Operating, LP WY0000761 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jun 30, 2030 |
| BreitBurn Operating, LP WY0001031 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 1, 2027 |
| BreitBurn Operating, LP WY0001490 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 2, 2028 |
| BreitBurn Operating, LP WY0020265 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Breitburn Operating, LP WY0000973 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2030 |
| Carbon Creek Energy, LLC WY0055638 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Cardinal Wyoming LLC WY0035521 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Carl D. Underwood Oil & Gas WY0027367 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due May 4, 2027 |
| Carol-Holly Oil Corporation WY0025283 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Apr 3, 2028 |
| Carol-Holly Oil Corporation WY0027308 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2028 |
| Carol-Holly Oil Corporation WY0035726 · Crude Petroleum And Natural Gas | No value over a limit | Expires Dec 31, 2028 |
| Chaco Energy Company WY0026611 · Crude Petroleum And Natural Gas | No value over a limit; 6 required values not reported | Expires Oct 31, 2030 |
| Chaco Energy Company WY0028126 · Crude Petroleum And Natural Gas | No value over a limit; 4 required values not reported | Expires Oct 31, 2030 |
| Chemtrade Logistics WY0034207 · Natural Gas Liquids | No value over a limit | Permit past the expiry date EPA's file holds |
| Chipcore, LLC WY0023507 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| Chipcore, LLC WY0047295 · Oil And Gas Exploration Services | No value over a limit | Expires Mar 31, 2029 |
| Citation Oil and Gas Corporation WY0001171 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 1, 2027 |
| Citation Oil and Gas Corporation WY0001481 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due May 4, 2027 |
| Citation Oil and Gas Corporation WY0001503 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due May 4, 2027 |
| Citation Oil and Gas Corporation WY0020508 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Citation Oil and Gas Corporation WY0022454 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Citation Oil and Gas Corporation WY0023914 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 1, 2027 |
| Cline Production Company WY0097007 · Crude Petroleum And Natural Gas | No value over a limit | Expires Apr 30, 2029 |
| Cloud Peak Operating LLC WY0094439 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| Contango Resources, INC WY0020699 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2028 |
| Contango Resources, INC WY0022829 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Apr 3, 2028 |
| Contango Resources, INC WY0022837 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Apr 3, 2028 |
| Contango Resources, INC WY0024414 · Natural Gas Liquids | No value over a limit; 3 required values not reported | Expires Nov 30, 2028 |
| Contango Resources, INC WY0031704 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2028 |
| Contango Resources, INC WY0032859 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2028 |
| Contango Resources, INC WY0033120 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2028 |
| Contango Resources, INC WY0033138 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2028 |
| Contango Resources, INC WY0036617 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2028 |
| Contango Resources, LLC WY0000868 · Crude Petroleum And Natural Gas | No value over a limit | Expires Dec 31, 2030 |
| Cowboy Clean Fuels, LLC WY0049204 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Cowboy Clean Fuels, LLC WY0053821 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Cowboy Clean Fuels, LLC WY0056839 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| D90 ENERGY LLC WY0000281 · Oil And Gas Exploration Services | No value over a limit; 61 required values not reported | Expires Feb 28, 2029 |
| D90 Energy LLC WY0000264 · Crude Petroleum And Natural Gas | No value over a limit; 46 required values not reported | Expires Feb 28, 2029 |
| Denbury Onshore, LLC WY0036064 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jun 30, 2030 |
| Denbury Onshore, LLC WY0052370 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Ellwood Exploration, LLC WY0096181 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| Energy Equity Company WY0032760 · Crude Petroleum And Natural Gas | No value over a limit; 54 required values not reported | Expires Oct 31, 2030 |
| Gorman Construction, LLC WY0036234 · Crude Petroleum And Natural Gas | No value over a limit; 37 required values not reported | Permit past the expiry date EPA's file holds |
| Granite Creek Energy, LLC WY0097027 · Crude Petroleum And Natural Gas | No value over a limit | Expires Apr 30, 2030 |
| Granite Creek Operating LLC WY0002984 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Granite Creek Operating LLC WY0003140 · Crude Petroleum And Natural Gas | No value over a limit; 7 required values not reported | Renewal application due Jan 1, 2027 |
| Granite Creek Operating LLC WY0023248 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 1, 2027 |
| Green Reserve Energy Holdings, LLC WY0028274 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jun 30, 2030 |
| Hadley Jackson Oil WY0096407 · Crude Petroleum And Natural Gas | No value over a limit | Expires Mar 31, 2029 |
| Hilcorp Energy Company WY0032697 · Crude Petroleum And Natural Gas | No value over a limit | Expires Mar 31, 2030 |
| Impact Energy Operating, LLC WY0034142 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Indian Creek Resources, Inc. WY0096113 · Crude Petroleum And Natural Gas | No value over a limit; 15 required values not reported | Permit past the expiry date EPA's file holds |
| Iron Creek Properties, Inc. WY0023566 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jul 4, 2027 |
| J & J Production WY0001619 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| JP Oil Company WY0001864 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| JP Oil Company WY0028002 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| JoeMar Wyoming Operating LLC WY0056375 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| Legacy Reserves Operating, LP WY0024171 · Crude Petroleum And Natural Gas | No reports in EPA's file for the window | Permit past the expiry date EPA's file holds |
| Legacy Reserves Operating, LP WY0024180 · Crude Petroleum And Natural Gas | No reports in EPA's file for the window | Permit past the expiry date EPA's file holds |
| Loil Oil, LLC DBA Loil Energy Partners WY0000663 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Loil Oil, LLC DBA Loil Energy Partners WY0024716 · Crude Petroleum And Natural Gas | No value over a limit; 4 required values not reported | Expires Nov 30, 2028 |
| M & K Oil Company, LLC WY0002593 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| M&K Oil Company, LLC WY0001643 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2030 |
| M&K Oil Company, LLC WY0032832 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2030 |
| M&K Oil Company, LLC WY0033596 · Crude Petroleum And Natural Gas | No value over a limit; 4 required values not reported | Expires Oct 31, 2030 |
| M&K Oil Company, LLC WY0034169 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2030 |
| M&K Oil Company, LLC WY0035599 · Crude Petroleum And Natural Gas | No value over a limit; 4 required values not reported | Expires Oct 31, 2030 |
| M&K Oil Company, LLC WY0036439 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2030 |
| M2S Oil LLC WY0001627 · Crude Petroleum And Natural Gas | No value over a limit | Expires Dec 31, 2028 |
| M2S Oil, LLC WY0026859 · Crude Petroleum And Natural Gas | No value over a limit; 22 required values not reported | Expires Dec 31, 2028 |
| Maxim Drilling and Exploration, Inc. WY0053724 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jul 31, 2031 |
| Maximus Operating, Ltd. WY0096999 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2028 |
| Merit Energy Company WY0000175 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 2, 2028 |
| Merit Energy Company WY0000680 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 2, 2028 |
| Merit Energy Company WY0001732 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jun 30, 2030 |
| Merit Energy Company WY0001759 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jun 30, 2030 |
| Merit Energy Company WY0001899 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jun 30, 2030 |
| Merit Energy Company WY0001911 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jun 30, 2030 |
| Merit Energy Company WY0024261 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Apr 3, 2028 |
| Merit Energy Company WY0026590 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 1, 2027 |
| Merit Energy Company WY0027197 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jun 30, 2030 |
| Merit Energy Company WY0036421 · Natural Gas Liquids | No value over a limit | Expires Aug 31, 2031 |
| Merit Energy Company-Chatterton Battery WY0000922 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Merit Energy Company-Maverick Springs Battery WY0000779 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| New Era Petroleum WY0032565 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| O'Brien Energy Resources WY0054241 · Crude Petroleum And Natural Gas | No value over a limit; 63 required values not reported | Renewal application due Jul 4, 2027 |
| Oil Mountain Energy, Inc. WY0096989 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| Osage Partners LLC WY0003221 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Osage Partners, LLC WY0003298 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 1, 2027 |
| Osage Partners, LLC WY0003301 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Osage Partners, LLC WY0026701 · Crude Petroleum And Natural Gas | No value over a limit; 51 required values not reported | Expires Jul 31, 2031 |
| Osage Partners, LLC WY0026719 · Crude Petroleum And Natural Gas | No value over a limit; 2 required values not reported | Expires Aug 31, 2031 |
| Ott, Inc. WY0056359 · Crude Petroleum And Natural Gas | No value over a limit; 40 required values not reported | Renewal application overdue |
| POC-I, LLC WY0001414 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| POC-I, LLC WY0003051 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Petroleum Resource Management WY0031461 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Dec 3, 2027 |
| Phillips 66 Company WY0030481 · Crude Petroleum And Natural Gas | No value over a limit | Expires Apr 30, 2031 |
| Phoenix Production Sheldon Dome WY0024953 · Crude Petroleum And Natural Gas | No value over a limit; 15 required values not reported | Permit past the expiry date EPA's file holds |
| Pine Haven Resources, LLC WY0001198 · Oil And Gas Exploration Services | No value over a limit | Expires Jul 31, 2029 |
| Pine Haven Resources, LLC WY0033065 · Crude Petroleum And Natural Gas | No value over a limit | Expires Dec 31, 2029 |
| Pine Haven Resources, LLC WY0034151 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jul 31, 2029 |
| Pronghorn Operating, LLC WY0048321 · Crude Petroleum And Natural Gas | No value over a limit | Expires Nov 30, 2030 |
| Pronghorn Operating, LLC WY0048381 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Mar 4, 2027 |
| Pronghorn Operating, LLC WY0049158 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 1, 2027 |
| Pronghorn Operating, LLC WY0049344 · Crude Petroleum And Natural Gas | No value over a limit | Expires Nov 30, 2030 |
| Pronghorn Operating, LLC WY0049697 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Pronghorn Operating, LLC WY0050865 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Pronghorn Operating, LLC WY0051276 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jul 4, 2027 |
| Pronghorn Operating, LLC WY0051446 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Pronghorn Operating, LLC WY0051713 · Crude Petroleum And Natural Gas | No value over a limit; 1 required values not reported | Renewal application due Nov 1, 2026 |
| Pronghorn Operating, LLC WY0051837 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Pronghorn Operating, LLC WY0051918 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 2, 2028 |
| Pronghorn Operating, LLC WY0052124 · Crude Petroleum And Natural Gas | No value over a limit | Expires May 31, 2029 |
| Pronghorn Operating, LLC WY0052221 · Crude Petroleum And Natural Gas | No value over a limit | Expires Nov 30, 2030 |
| Pronghorn Operating, LLC WY0052299 · Crude Petroleum And Natural Gas | No value over a limit | Expires Nov 30, 2030 |
| Pronghorn Operating, LLC WY0052426 · Crude Petroleum And Natural Gas | No value over a limit | Expires Aug 31, 2030 |
| Pronghorn Operating, LLC WY0052817 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Pronghorn Operating, LLC WY0052833 · Crude Petroleum And Natural Gas | No value over a limit; 1 required values not reported | Expires Oct 31, 2030 |
| Pronghorn Operating, LLC WY0054151 · Crude Petroleum And Natural Gas | No value over a limit | Expires Dec 31, 2028 |
| Pronghorn Operating, LLC WY0054593 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Mar 4, 2027 |
| Pronghorn Operating, LLC WY0055514 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Pronghorn Operating, LLC WY0055590 · Crude Petroleum And Natural Gas | No value over a limit | Expires Sep 30, 2029 |
| Pronghorn Operating, LLC WY0056529 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Apr 3, 2028 |
| RIM Operating, Inc. WY0097002 · Crude Petroleum And Natural Gas | No value over a limit | Expires Apr 30, 2029 |
| Ranch Oil Company WY0000299 · Crude Petroleum And Natural Gas | No value over a limit | Expires Dec 31, 2028 |
| Ranch Oil Company WY0034193 · Crude Petroleum And Natural Gas | No value over a limit | Expires Sep 30, 2029 |
| Red Tiger Oil and Gas, LLC WY0026310 · Crude Petroleum And Natural Gas | No value over a limit | Expires Apr 30, 2030 |
| Richardson Operating Company WY0027316 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due May 4, 2027 |
| Richardson Operating Company WY0035840 · Crude Petroleum And Natural Gas | No value over a limit; 7 required values not reported | Renewal application due Apr 3, 2028 |
| SHADCO WY0025011 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 2, 2028 |
| Seedy Draw LLC WY0034673 · Crude Petroleum And Natural Gas | No value over a limit; 37 required values not reported | Expires Nov 30, 2028 |
| Simon Oil WY0025071 · Crude Petroleum And Natural Gas | No value over a limit | Expires Dec 31, 2030 |
| Six Bar Oil, LLC WY0024741 · Crude Petroleum And Natural Gas | No value over a limit | Expires Mar 31, 2030 |
| Six Bar Oil, LLC WY0024759 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jul 31, 2029 |
| Six Bar Oil, LLC WY0097026 · Drilling Oil And Gas Wells | No value over a limit | Expires Jun 30, 2030 |
| Skinner Oil and Gas, LLC WY0097028 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jun 30, 2030 |
| Smokey Gap Oil Co. LLC WY0002941 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Sunshine Valley Petroleum WY0034681 · Crude Petroleum And Natural Gas | No value over a limit; 14 required values not reported | Expires Nov 30, 2028 |
| Tobinsnet Oil & Gas LTD WY0045900 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| TriBar Resources, LLC WY0002721 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2028 |
| True Oil, LLC WY0034983 · Crude Petroleum And Natural Gas | No value over a limit | Expires Jun 30, 2030 |
| USA Energy, LLC WY0000817 · Crude Petroleum And Natural Gas | No value over a limit; 48 required values not reported | Renewal application due Aug 4, 2027 |
| USA Energy, LLC WY0000825 · Crude Petroleum And Natural Gas | No value over a limit; 50 required values not reported | Renewal application due Aug 4, 2027 |
| USA Energy, LLC WY0000841 · Crude Petroleum And Natural Gas | No value over a limit; 71 required values not reported | Renewal application due Oct 3, 2027 |
| USA Energy, LLC WY0000906 · Crude Petroleum And Natural Gas | No value over a limit; 46 required values not reported | Renewal application due Aug 4, 2027 |
| USA Energy, LLC WY0023990 · Crude Petroleum And Natural Gas | No value over a limit; 60 required values not reported | Expires Nov 30, 2028 |
| VCP Wyoming, LLC WY0001520 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Mar 4, 2028 |
| VCP Wyoming, LLC WY0002241 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Mar 4, 2028 |
| Valkyrie Operating, LLC WY0000787 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 1, 2027 |
| Valkyrie Operating, LLC WY0001210 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Jan 1, 2027 |
| Valkyrie Operating, LLC WY0024660 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Valkyrie Operating, LLC WY0026051 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2030 |
| Valkyrie Operating, LLC WY0034002 · Crude Petroleum And Natural Gas | No value over a limit | Expires Oct 31, 2030 |
| Valkyrie Operating, LLC WY0035271 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application overdue |
| Vaquero Bighorn, LLC WY0054798 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Mar 4, 2028 |
| Vortex Petroleum, Inc. WY0026573 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Oct 3, 2027 |
| WESCO OPERATING INC WY0000469 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| WESCO OPERATING INC OIL AND GAS OPERATION WY0000221 · Crude Petroleum And Natural Gas | No reports in EPA's file for the window | Permit past the expiry date EPA's file holds |
| WYOIL Corporation WY0095923 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Wesco Operating WY0025607 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Wesco Operating - Tensleep #1 WY0025232 · Crude Petroleum And Natural Gas | No value over a limit | Permit past the expiry date EPA's file holds |
| Wesco Operating, Inc. WY0000493 · Crude Petroleum And Natural Gas | No value over a limit | Renewal application due Sep 2, 2027 |
| White Rock Oil and Gas, L.L.C. WY0000388 · Crude Petroleum And Natural Gas | No value over a limit; 22 required values not reported | Permit past the expiry date EPA's file holds |
| White Rock Oil and Gas, L.L.C. WY0024422 · Crude Petroleum And Natural Gas | No value over a limit; 14 required values not reported | Permit past the expiry date EPA's file holds |
| White Rock Oil and Gas, L.L.C. WY0043966 · Crude Petroleum And Natural Gas | No value over a limit; 22 required values not reported | Permit past the expiry date EPA's file holds |
The record is EPA's ICIS-NPDES file of 2026-10-15: values filed against each limit between Oct 1, 2025 and Sep 30, 2026. No reports on file may be EPA's gap, not the facility's.
For programs and AI agents: this screen as JSON at /api/v1/permits?state=WY&sic=13, narrowed with &over_limit=true, ¶meter=phosphorus or &renewal=due; or add https://passage-data.com/mcp as a remote MCP server (tool list_permits). Free, no key. llms.txt
From EPA's ECHO data, not the permit document itself: your permit is the final word. All states