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
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 |
|---|---|---|
| NOBLE ENERGY - BETZ T4N-R65W-S9 L01 | Minor source | No |
| NOBLE ENERGY - BICKLING ARNOLD T6N-R65W- | Minor source | No |
| NOBLE ENERGY - BICKLING T6N-R65W-S21 L02 | Minor source | No |
| NOBLE ENERGY - BICKLING T6N-R65W-S3 L01 | Minor source | No |
| NOBLE ENERGY - BIG FOOT T4N-R65W-S12 L01 | Minor source | No |
| NOBLE ENERGY - BIG FOOT T4N-R65W-S12 L02 | Minor source | No |
| NOBLE ENERGY - BILL L01 | Minor source | No |
| NOBLE ENERGY - BIRD ZABKA T4N-R66W-S20 L | Minor source | No |
| NOBLE ENERGY - BLEHM L04 | Minor source | No |
| NOBLE ENERGY - BOEHNER L01 | Minor source | No |
| NOBLE ENERGY - BOEHNER T4N-R65W-S8 L03 | Minor source | No |
| NOBLE ENERGY - BOHLENDER FRANK#415779541 | Minor source | No |
| NOBLE ENERGY - BOHLENDER T3N-R65W-S14 L0 | Minor source | No |
| NOBLE ENERGY - BOOTH L01 | Minor source | No |
| NOBLE ENERGY - BOOTH T3N-R64W-S2 L01 | Minor source | No |
| NOBLE ENERGY - BOOTH T4N-R64W-S25 L01 | Minor source | No |
| NOBLE ENERGY - BOOTH T4N-R64W-S26 L01 | Minor source | No |
| NOBLE ENERGY - BOOTH T5N-R67W-S25 L03 | Minor source | No |
| NOBLE ENERGY - BOOTH USX T7N-R65W-S23 L0 | Minor source | No |
| NOBLE ENERGY - BOOTH USX T7N-R65W-S25 | Minor source | No |
| NOBLE ENERGY - BOOTH USX T7N-R65W-S35L01 | Synthetic minor source | No |
| NOBLE ENERGY - BORN SITZMAN T4N-R64W-S27 | Minor source | No |
| NOBLE ENERGY - BOULTER | Minor source | No |
| NOBLE ENERGY - BOULTER GEIS | Minor source | No |
| NOBLE ENERGY - BOULTER JOHNSON ERICKSON | Minor source | No |
| NOBLE ENERGY - BOULTER T4N-R65W-S11 L03 | Minor source | No |
| NOBLE ENERGY - BOULTER T4N-R65W-S14 L01 | Minor source | No |
| NOBLE ENERGY - BOULTER T4N-R65W-S14 L03 | Minor source | No |
| NOBLE ENERGY - BOULTER T4N-R65W-S16 L02 | Minor source | No |
| NOBLE ENERGY - BOULTER T4N-R65W-S21 L01 | Minor source | No |
| NOBLE ENERGY - BRIGGSDALE OPF | Synthetic minor source | No |
| NOBLE ENERGY - BRONCO ST T5N-R62W-S10 L0 | Minor source | No |
| NOBLE ENERGY - BROOMFIELD FREEDOM L01 | Minor source | No |
| NOBLE ENERGY - BROSNAHAN JOHN T4N-R64W-S | Minor source | No |
| NOBLE ENERGY - BROWN BICKLING T6N-R65W-S | Minor source | No |
| NOBLE ENERGY - BROWN T4N-R66W-S24 L04 | Minor source | No |
| NOBLE ENERGY - BROWN USX T6N-R63W-S3 L02 | Minor source | No |
| NOBLE ENERGY - BROWN USX T6N-R63W-S3 L03 | Minor source | No |
| NOBLE ENERGY - BROWN USX T6N-R63W-S3 L04 | Minor source | No |
| NOBLE ENERGY - BRUNTZ BOULTER L02 | Minor source | No |
| NOBLE ENERGY - BRUNTZ BOULTER T4N-R65W-S | Minor source | No |
| NOBLE ENERGY - BRUNTZ T4N-R65W-S16 L02 | Minor source | No |
| NOBLE ENERGY - BRUZEWSKI T4N-R66W-S33 L0 | Minor source | No |
| NOBLE ENERGY - BULLEIT FED T8N-R59W-S4 L | Synthetic minor source | No |
| NOBLE ENERGY - BURKE T4N-R65W-S24 L02 | Minor source | No |
| NOBLE ENERGY - BUTTERBALL DECHANT TURK B | Minor source | No |
| NOBLE ENERGY - BUTTERBALL THOMPSON LDS T | Minor source | No |
| NOBLE ENERGY - CACHE NCLP USX T6N-R63W-S | Synthetic minor source | No |
| NOBLE ENERGY - CALATO CHUCK ARENS T4N-R6 | Minor source | No |
| NOBLE ENERGY - CALLY BLUE DUFF GUTTERSEN | Minor source | No |
| NOBLE ENERGY - CAMENISCH STRAIGHT SUPREM | Minor source | No |
| NOBLE ENERGY - CANNON T3N-R65W-S34 L02 | Minor source | No |
| NOBLE ENERGY - CANTRELL DINNELL HERBST | Minor source | No |
| NOBLE ENERGY - CANTRELLL COLEMAN HERBST | Minor source | No |
| NOBLE ENERGY - CARLSON 415779543 | Minor source | No |
| NOBLE ENERGY - CARLSON L01 | Minor source | No |
| NOBLE ENERGY - CARLSON T5N-R66W-S32 L01 | Minor source | No |
| NOBLE ENERGY - CARLSON T5N-R66W-S32 L02 | Minor source | No |
| NOBLE ENERGY - CARMIN USX L01 | Synthetic minor source | No |
| NOBLE ENERGY - CASTOR FED T8N-R59W-S17 L | Minor source | No |
| NOBLE ENERGY - CASTOR FED T9N-R58W-S12 L | Minor source | No |
| NOBLE ENERGY - CASTOR FEDERAL LC23-62HN | Minor source | No |
| NOBLE ENERGY - CASTOR T8N-R59W-S10 L01 | Minor source | No |
| NOBLE ENERGY - CASTOR T9N-R58W-S11 L01 | Minor source | No |
| NOBLE ENERGY - CASTOR T9N-R59W-S25 L01 | Minor source | No |
| NOBLE ENERGY - CASTOR T9N-R59W-S26 L01 | Synthetic minor source | No |
| NOBLE ENERGY - CASTOR T9N-R59W-S27 L01 | Minor source | No |
| NOBLE ENERGY - CASTOR T9N-R59W-S34 L01 | Minor source | No |
| NOBLE ENERGY - CDOT L01 | Minor source | No |
| NOBLE ENERGY - CECIL DYER USX | Synthetic minor source | No |
| NOBLE ENERGY - CECIL L01 | Minor source | No |
| NOBLE ENERGY - CECIL USX T6N-R64W-S1 L03 | Synthetic minor source | No |
| NOBLE ENERGY - CECIL USX T6N-R64W-S1 L03 | Minor source | No |
| NOBLE ENERGY - CECIL USX T6N-R64W-S1 L05 | Minor source | No |
| NOBLE ENERGY - CHAMPLIN AMA T2N-R63W-S5 | Minor source | No |
| NOBLE ENERGY - CHAMPLIN AMOCO... | Minor source | No |
| NOBLE ENERGY - CHANDLER ST T3N-R64W-S15 | Synthetic minor source | No |
| NOBLE ENERGY - CHECKETTS JERKE | Minor source | No |
| NOBLE ENERGY - CHENOWETH LEONARD HANDSCO | Minor source | No |
| NOBLE ENERGY - CHESNUT L01 | Minor source | No |
| NOBLE ENERGY - CHRISTIANSEN T7N-R64W-S34 | Minor source | No |
| NOBLE ENERGY - CIRCLE RANCH... | Minor source | No |
| NOBLE ENERGY - COALVIEW DINNER G01 ECONO | Synthetic minor source | No |
| NOBLE ENERGY - COCKROFT | Minor source | No |
| NOBLE ENERGY - COCKROFT USX T6N-R64W-S11 | Minor source | No |
| NOBLE ENERGY - COCKROFT USX T6N-R64W-S11 | Minor source | No |
| NOBLE ENERGY - CODY T3N-R64W-S2 L01 | Minor source | No |
| NOBLE ENERGY - COLE T4N-R65W-S10 L02 | Minor source | No |
| NOBLE ENERGY - COLT STN LIQ CAPTURE | Synthetic minor source | No |
| NOBLE ENERGY - CONAGRA MENONI T5N-R64W-S | Minor source | No |
| NOBLE ENERGY - CONAGRA MENONI T5N-R64W-S | Minor source | No |
| NOBLE ENERGY - CONAGRA T5N-R64W-S30 L03 | Minor source | No |
| NOBLE ENERGY - COOK ST T9N-R58W-S36 L01 | Minor source | No |
| NOBLE ENERGY - COUGAR BAKER FRITZLER L01 | Minor source | No |
| NOBLE ENERGY - CPC FERGUSON CHEWY UPRC | Minor source | No |
| NOBLE ENERGY - CRAVEN EVANS MURRY L01 | Minor source | No |
| NOBLE ENERGY - CRAVEN GAGES GATES MNOOKI | Minor source | No |
| NOBLE ENERGY - CRAVEN MOSIER L01 | Minor source | No |
| NOBLE ENERGY - CROW CREEK ST AC36 & AA01 | Minor source | Yes |
| NOBLE ENERGY - CSU T6N-R65W-S35 L01 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.