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 - ALLISON API T4N-R65W-S24 | Minor source | No |
| NOBLE ENERGY - ALM USX T6N-R65W-S11 L02 | Minor source | No |
| NOBLE ENERGY - ALOYSIUS | Minor source | No |
| NOBLE ENERGY - ALVIN DECHANT L01 | Minor source | No |
| NOBLE ENERGY - ANDERSEN HEADLEY LARSON T | Minor source | No |
| NOBLE ENERGY - ANDERSON FEIT T6N-R65W-S2 | Minor source | No |
| NOBLE ENERGY - APACHE E23 | Minor source | No |
| NOBLE ENERGY - API T4N-R64W-S20 L01 | Minor source | No |
| NOBLE ENERGY - API T4N-R66W-S11 L01 | Minor source | No |
| NOBLE ENERGY - ARD COBB T4N-R64W-S6 L01 | Minor source | No |
| NOBLE ENERGY - ARD T4N-R64W-S6 L01 | Minor source | No |
| NOBLE ENERGY - ARENS FRED SADIE HOWIE NA | Minor source | No |
| NOBLE ENERGY - ARENS GRANT T4N-R65W-S22 | Minor source | No |
| NOBLE ENERGY - ARENS SHELTON T4N-R65W-S2 | Minor source | No |
| NOBLE ENERGY - ARENS T4N-R65W-S15 L01 | Minor source | No |
| NOBLE ENERGY - ARISTOCRAT BEEBE DRAW T3N | Minor source | No |
| NOBLE ENERGY - ARISTOCRAT T3N-R65W-S11 | Minor source | No |
| NOBLE ENERGY - ARISTOCRAT T3N-R65W-S2L01 | Synthetic minor source | No |
| NOBLE ENERGY - ARY USX T7N-R64W-S31 L01 | Minor source | No |
| NOBLE ENERGY - AVA ST | Minor source | No |
| NOBLE ENERGY - AVA ST #10138100 | Minor source | No |
| NOBLE ENERGY - BALL RANCH T7N-R63W-S15 | Minor source | No |
| NOBLE ENERGY - BALL RANCH T7N-R63W-S3 | Minor source | No |
| NOBLE ENERGY - BARNARD L01 | Minor source | No |
| NOBLE ENERGY - BASHOR L01 | Minor source | No |
| NOBLE ENERGY - BASHOR PEPPLER L01 | Synthetic minor source | No |
| NOBLE ENERGY - BASHOR ST T6N-R63W-S16L01 | Minor source | No |
| NOBLE ENERGY - BASHOR T6N-R63W-S17 L01 | Minor source | No |
| NOBLE ENERGY - BASHOR T6N-R63W-S17 L02 | Minor source | No |
| NOBLE ENERGY - BASHOR T6N-R63W-S9 L02 | Minor source | No |
| NOBLE ENERGY - BATT #415739580 | Minor source | No |
| NOBLE ENERGY - BATT #415743919 | Minor source | No |
| NOBLE ENERGY - BATT #415743920 | Minor source | No |
| NOBLE ENERGY - BATT #415744789 | Minor source | No |
| NOBLE ENERGY - BATT #415744794 | Minor source | No |
| NOBLE ENERGY - BATTERY # 10039800 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415739597 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415743922 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415744797 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415745286 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415746170 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415746173 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415746174 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415746342 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415771381 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415798154 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415801235 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415806792 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415807008 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415807081 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415807832 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415807948 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415807958 | Minor source | No |
| NOBLE ENERGY - BATTERY # 415808286 | Minor source | No |
| NOBLE ENERGY - BATTERY #10005200 | Minor source | No |
| NOBLE ENERGY - BATTERY #10012900 | Minor source | No |
| NOBLE ENERGY - BATTERY #10014800 | Minor source | No |
| NOBLE ENERGY - BATTERY #10022800 | Minor source | No |
| NOBLE ENERGY - BATTERY #10022900 | Minor source | No |
| NOBLE ENERGY - BATTERY #10027900 | Minor source | No |
| NOBLE ENERGY - BATTERY #10028000 | Minor source | No |
| NOBLE ENERGY - BATTERY #10040500 | Minor source | No |
| NOBLE ENERGY - BATTERY #10042900 | Minor source | No |
| NOBLE ENERGY - BATTERY #10059800 | Minor source | No |
| NOBLE ENERGY - BATTERY #10064600 | Minor source | No |
| NOBLE ENERGY - BATTERY #10066000 | Minor source | No |
| NOBLE ENERGY - BATTERY #10076500 | Minor source | No |
| NOBLE ENERGY - BATTERY #10089500 | Minor source | No |
| NOBLE ENERGY - BATTERY #10110500 | Minor source | No |
| NOBLE ENERGY - BATTERY #10117700 | Minor source | No |
| NOBLE ENERGY - BATTERY #10131000 | Minor source | No |
| NOBLE ENERGY - BATTERY #10814700 | Minor source | No |
| NOBLE ENERGY - BATTERY #10870300 | Minor source | No |
| NOBLE ENERGY - BATTERY #11304300 | Minor source | No |
| NOBLE ENERGY - BATTERY #11314500 | Minor source | No |
| NOBLE ENERGY - BATTERY #11319100 | Minor source | No |
| NOBLE ENERGY - BATTERY #11335900 | Minor source | No |
| NOBLE ENERGY - BATTERY #11353500 | Minor source | No |
| NOBLE ENERGY - BATTERY #11353800 | Minor source | No |
| NOBLE ENERGY - BATTERY #11354900 | Minor source | No |
| NOBLE ENERGY - BATTERY #11358400 | Minor source | No |
| NOBLE ENERGY - BATTERY #11358500 | Minor source | No |
| NOBLE ENERGY - BATTERY #11361900 | Minor source | No |
| NOBLE ENERGY - BATTERY #11362900 | Minor source | No |
| NOBLE ENERGY - BATTERY #11366800 | Minor source | No |
| NOBLE ENERGY - BATTERY #11367200 | Minor source | No |
| NOBLE ENERGY - BATTERY #11368600 | Minor source | No |
| NOBLE ENERGY - BATTERY #11386900 | Minor source | No |
| NOBLE ENERGY - BATTERY #11440500 | Minor source | No |
| NOBLE ENERGY - BATTERY #11477600 | Minor source | No |
| NOBLE ENERGY - BATTERY #11499500 | Minor source | No |
| NOBLE ENERGY - BATTERY #11500200 | Minor source | No |
| NOBLE ENERGY - BATTERY #11522502 | Minor source | No |
| NOBLE ENERGY - BATTERY #11525700 | Minor source | No |
| NOBLE ENERGY - BATTERY #11533500 | Minor source | No |
| NOBLE ENERGY - BATTERY #11619000 | Minor source | No |
| NOBLE ENERGY - BATTERY #116270 | Minor source | No |
| NOBLE ENERGY - BATTERY #11720900 | Minor source | No |
| NOBLE ENERGY - BATTERY #117211 | Minor source | No |
| NOBLE ENERGY - BATTERY #11739000 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.