EPA Air · by county
Air-emissions sources in Weld County, Colorado
- 8,858Facilities
Every stationary source in Weld County, Colorado that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
By emissions classification in Weld County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
- Minor source 7,950
- Synthetic minor source 814
- Major source 89
Inspections in Weld County, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 inspections 125
- 2025 inspections 440
- 2024 inspections 387
- 2023 inspections 289
- 2022 inspections 246
- 2021 inspections 323
- 2020 inspections 265
- 2019 inspections 152
- 2018 inspections 153
- 2017 inspections 178
Violations in Weld County, by year
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity.
- 2026 violations 4
- 2025 violations 77
- 2024 violations 128
- 2023 violations 89
- 2022 violations 43
- 2021 violations 116
- 2020 violations 66
- 2019 violations 47
- 2018 violations 53
- 2017 violations 29
Stack tests in Weld County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 72
- 2025 stack tests 186
- 2024 stack tests 170
- 2023 stack tests 246
- 2022 stack tests 207
- 2021 stack tests 160
- 2020 stack tests 208
- 2019 stack tests 197
- 2018 stack tests 83
- 2017 stack tests 103
Inspections in Weld County, year by year · Violations in Weld County, year by year · Stack tests in Weld County, year by year
Other counties in Colorado
Every county in the state with at least three sources on file.
- Morgan County 61
- Otero County 40
- Ouray County 3
- Park County 17
- Phillips County 22
- Pitkin County 16
- Prowers County 53
- Pueblo County 162
- Rio Blanco County 402
- Rio Grande County 27
- Routt County 45
- Saguache County 14
- San Miguel County 37
- Sedgwick County 15
- Summit County 33
- Teller County 18
- Undetermined County 1,500
- Washington County 85
- Yuma County 152
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| STRACHAN EXPLORATION - WAVES 1H | Minor source | No |
| STROMO, LLC - HUDSON COMPOSTING FACILITY | Minor source | No |
| SUBURBAN SAND & GVL - RJ CAMPBELL PIT #1 | Minor source | No |
| SUMMIT DJ-O OPERATING - KOKI | Synthetic minor source | Yes |
| SUMMIT DJ-O OPERATING - MAKENA GAS PLANT | Major source | No |
| SUMMIT DJ-S - BOB WHITE COMPRESSOR STN | Minor source | No |
| SUMMIT DJ-S - CENTENNIAL GAS PLANT | Synthetic minor source | No |
| SUMMIT DJ-S - GROVER COMPRESSOR STATION | Synthetic minor source | No |
| SUMMIT DJ-S - HEMBERGER CS | Minor source | No |
| SUMMIT DJ-S - HILL COMPRESSOR STATION | Synthetic minor source | No |
| SUMMIT DJ-S - NEW RAYMER CS | Synthetic minor source | No |
| SUMMIT MIDSTREAM NIOBR - ANGUS COMPR STN | Synthetic minor source | No |
| SUMMIT MIDSTREAM NIOBR - HEREFORD RANCH | Synthetic minor source | No |
| SUN MOUNTAIN, INC. | Synthetic minor source | No |
| SUNCOR - FORT LUPTON PUMP STATION | Minor source | No |
| SUPERIOR OILFIELD SVCS - NORTH STAR PIT | Minor source | No |
| SWIFT BEEF COMPANY - GREELEY BEEF | Major source | No |
| SYNERGY - 16740_STATE BEATRICE (16-1) | Minor source | No |
| SYNERGY RES - SRC NORTHRIDGE WELLS | Minor source | No |
| SYNERGY RES - SRC NORTHRIDGE WELLS-2 | Minor source | No |
| SYNERGY RES CORP - HERGENREDER #32-9 | Minor source | No |
| SYNERGY RES CORP - IMOGENE #1, 2, 3 | Minor source | No |
| SYNERGY RES CORP - STATE #16-4 & #16-5 | Minor source | No |
| SYNERGY RES CORP- HOWARD #10-27 & #15-27 | Minor source | No |
| SYNERGY RES. - BROWNWOOD #11-1 & #11-2 | Minor source | No |
| SYNERGY RES. CORP. - OLE #4-24, #21-24 | Minor source | No |
| SYNERGY RESOURCES - SCHOENLEBER #16-3 | Minor source | No |
| SYNERGY RESOURCES - BARNEY 6, 7, & 8 | Minor source | No |
| SYNERGY RESOURCES - HALL 25-33D | Minor source | No |
| SYNERGY RESOURCES - HILFER WELLS | Minor source | No |
| SYNERGY RESOURCES - JGH #1-30 | Minor source | No |
| SYNERGY RESOURCES - LOWE 31-14 | Minor source | No |
| SYNERGY RESOURCES - LOWE-2 WELL FACILITY | Minor source | No |
| SYNERGY RESOURCES - LOWE-3 WELL FACILITY | Minor source | No |
| SYNERGY RESOURCES - MONTERA 10-34 | Minor source | No |
| SYNERGY RESOURCES - MONTERA 2 FACILITY | Minor source | No |
| SYNERGY RESOURCES - SOUTH FACILITY | Minor source | No |
| SYNERGY RESOURCES - SRC PRATT #1 | Minor source | No |
| SYNERGY RESOURCES - TOEDTLI #22-3 | Minor source | No |
| SYNERGY RESOURCES - WIEDEMAN WELLS | Minor source | No |
| SYNERGY RESOURCES CORP - AVEX SEC 2 | Minor source | No |
| SYNERGY RESOURCES CORP - DUELL #2 | Minor source | No |
| SYNERGY RESOURCES CORP - HOWARD #2-27 | Minor source | No |
| SYNERGY RESOURCES CORP - NELSON WEST | Minor source | No |
| SYNERGY RESOURCES CORP - OGILVIE #24-4 | Minor source | No |
| SYNERGY RESOURCES CORP - WILSON #1-15 | Minor source | No |
| SYNERGY RESOURCES CORP - WOLFSON #26-6 | Minor source | No |
| SYNERGY RESOURCES CORP. - ANDERSON #1-13 | Minor source | No |
| SYNERGY RESOURCES CORP. - GARCIA #1-5 | Minor source | No |
| SYNERGY RESOURCES CORP. - GOLDBERG #1-24 | Minor source | No |
| SYNERGY RESOURCES CORP. - PETERSON #1-12 | Minor source | No |
| SYNERGY RESOURCES CORP. - SHABLE #1-7 | Minor source | No |
| SYNERGY RESOURCES CORP. - STATE #16-1 | Minor source | No |
| SYNERGY RESOURCES CORP. - STATE #16-3 | Minor source | No |
| SYZGY - MCENDAFFER PIT | Minor source | No |
| TALLGRASS INTERSTATE GAS - ROCKPORT CS | Synthetic minor source | No |
| TALLGRASS TERMINALS -GRASSLANDS TERMINAL | Major source | No |
| TALLGRASS TERMINALS-BUCKINGHAM TERMINAL | Major source | No |
| TEASDALE FOODS, INC | Minor source | No |
| TEXAS FARM PRODUCTS CO - TFP NUTRITION | Synthetic minor source | No |
| TGB SERVICE CO | Minor source | No |
| THISTLE DOWN T5N-R64W-S31 L01 | Minor source | No |
| TIGGES OIL LLC - TIGGES 31-1 | Minor source | No |
| TIMBERLINE - FRONT RANGE GENERATING | Major source | No |
| TINDALL OPERATING CO - BETTY JEAN | Minor source | No |
| TINDALL OPERATING CO - WILDCAT | Minor source | No |
| TIRE CENTERS INC. | Minor source | No |
| TOLMAR INC. - WINDSOR FACILITY | Minor source | No |
| TOP OPERATING CO - COUNTER #2 AND #3 | Minor source | No |
| TOP OPERATING CO - DITA | Minor source | No |
| TOP OPERATING CO - J.Y. MAYEDA | Minor source | No |
| TOP OPERATING CO - TANAKA NO 1 | Minor source | No |
| TOP OPERATING COMPANY - DITIRRO #1-A | Minor source | No |
| TOP OPERATING COMPANY - STAMP 31-2C | Minor source | No |
| TOTAL CONVENIENCE, INC | Minor source | No |
| TOWN OF JOHNSTOWN - WATER PLANT | Minor source | No |
| TRI STAR HEATING & AIR LLC | Minor source | No |
| TRI-STATE GENERATION & TRANS - JM SHAFER | Major source | No |
| TRI-STATE GENERATION & TRANSMISSION | Minor source | No |
| TUDEX PETROLEUMS INC. - FREEMAN 13-2 | Minor source | No |
| TWIN EAGLE - LA SALLE TRANSLOADING | Minor source | No |
| U-PUMP-IT - NO 820 | Minor source | No |
| U-PUMP-IT - NO 829 | Minor source | No |
| U-PUMP-IT - NO 843 | Minor source | No |
| UNIMIN / BJ SERVICES CO | Minor source | No |
| UNITED READY MIX - PLATTEVILLE | Minor source | No |
| UNITED STATES EXPLORATION -ARTIST 1 41-9 | Minor source | No |
| UNIV OF NORTHERN COLORADO | Synthetic minor source | No |
| UNIVERSAL FOREST PRODUCTS - WINDSOR | Minor source | No |
| UNIVERSITY AMOCO | Minor source | No |
| UPRC HP FARMS T2N-R64W-S17 L01 | Minor source | No |
| UPRC SHELTON T3N-R65W-S1 L01 | Minor source | No |
| VARRA COMPANIES DEL CAMINO 101 (AMMEND) | Minor source | No |
| VARRA COMPANIES INC-HEINTZELMAN PIT 116 | Minor source | No |
| VARRA COMPANIES- VARRA-COULSON RESOURCE | Minor source | No |
| VARRA COMPANIES-VARRA BEARSON RESOURCES | Minor source | No |
| VERDAD - BRINGELSON RANCH 32 MULTI PAD | Synthetic minor source | No |
| VERDAD - BRNAK 01N-64W-10 PAD | Synthetic minor source | No |
| VERDAD - JACKSON 02N-64W-33 PAD | Synthetic minor source | No |
| VERDAD - WARNER 01N-64W-17 PAD | Synthetic minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.