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 |
|---|---|---|
| NOBLE ENERGY, INC. - # 415663890 | Minor source | No |
| NOBLE ENERGY, INC. - # 415663920 | Minor source | No |
| NOBLE ENERGY, INC. - # 415664283 | Minor source | No |
| NOBLE ENERGY, INC. - # 42566220 | Minor source | No |
| NOBLE ENERGY, INC. - # 42566224 | Minor source | No |
| NOBLE ENERGY, INC. - # 425662397 | Minor source | No |
| NOBLE ENERGY, INC. - # 817235 | Minor source | No |
| NOBLE ENERGY, INC. - # 90104600 | Minor source | No |
| NOBLE ENERGY, INC. - # 91368300 | Minor source | No |
| NOBLE ENERGY, INC. - # 91368700 | Minor source | No |
| NOBLE ENERGY, INC. - # 917183 | Minor source | No |
| NOBLE ENERGY, INC. - # 917349 | Minor source | No |
| NOBLE ENERGY, INC. - # 917379 | Minor source | No |
| NOBLE ENERGY, INC. - # 917433 | Minor source | No |
| NOBLE ENERGY, INC. - #117152 | Minor source | No |
| NOBLE ENERGY, INC. - #117178 | Minor source | No |
| NOBLE ENERGY, INC. - #117179 | Minor source | No |
| NOBLE ENERGY, INC. - #415814711 | Minor source | No |
| NOBLE ENERGY, INC. - #415824003 | Minor source | No |
| NOBLE ENERGY, INC. - #415825444 | Minor source | No |
| NOBLE ENERGY, INC. - #900415 | Minor source | No |
| NOBLE ENERGY, INC. - #917192 | Minor source | No |
| NOBLE ENERGY, INC. - 415810647 | Minor source | No |
| NOBLE ENERGY, INC. - 415815702 | Minor source | No |
| NOBLE ENERGY, INC. - 415817746 | Minor source | No |
| NOBLE ENERGY, INC. - 415825136 | Minor source | No |
| NOBLE ENERGY, INC. - 415825697 | Minor source | No |
| NOBLE ENERGY, INC. - 415825698 | Minor source | No |
| NOBLE ENERGY, INC. - 415827092 | Minor source | No |
| NOBLE ENERGY, INC. - 415828730 | Minor source | No |
| NOBLE ENERGY, INC. - 415829192 | Minor source | No |
| NOBLE ENERGY, INC. - 415830819 | Minor source | No |
| NOBLE ENERGY, INC. - 415831136 | Minor source | No |
| NOBLE ENERGY, INC. - 415831137 | Minor source | No |
| NOBLE ENERGY, INC. - 415832865 | Minor source | No |
| NOBLE ENERGY, INC. - 415833559 | Minor source | No |
| NOBLE ENERGY, INC. - 415833609 | Minor source | No |
| NOBLE ENERGY, INC. - 415833974 | Minor source | No |
| NOBLE ENERGY, INC. - 415835022 | Synthetic minor source | No |
| NOBLE ENERGY, INC. - 415835023 | Minor source | No |
| NOBLE ENERGY, INC. - 415836299 | Minor source | No |
| NOBLE ENERGY, INC. - 415840092 | Minor source | No |
| NOBLE ENERGY, INC. - 415860498 | Minor source | No |
| NOBLE ENERGY, INC. - 415860503 | Minor source | No |
| NOBLE ENERGY, INC. - 415860504 | Minor source | No |
| NOBLE ENERGY, INC. - 415860510 | Minor source | No |
| NOBLE ENERGY, INC. - 415860515 | Minor source | No |
| NOBLE ENERGY, INC. - 415860517 | Minor source | No |
| NOBLE ENERGY, INC. - 415860520 | Minor source | No |
| NOBLE ENERGY, INC. - 415860525 | Minor source | No |
| NOBLE ENERGY, INC. - 415860532 | Minor source | No |
| NOBLE ENERGY, INC. - 415860534 | Minor source | No |
| NOBLE ENERGY, INC. - 415860535 | Minor source | No |
| NOBLE ENERGY, INC. - 415860537 | Minor source | No |
| NOBLE ENERGY, INC. - 415860539 | Minor source | No |
| NOBLE ENERGY, INC. - 415860540 | Minor source | No |
| NOBLE ENERGY, INC. - 415860542 | Minor source | No |
| NOBLE ENERGY, INC. - 415860544 | Minor source | No |
| NOBLE ENERGY, INC. - 415860548 | Minor source | No |
| NOBLE ENERGY, INC. - 415860551 | Minor source | No |
| NOBLE ENERGY, INC. - 415860560 | Minor source | No |
| NOBLE ENERGY, INC. - 415860562 | Minor source | No |
| NOBLE ENERGY, INC. - 415860575 | Minor source | No |
| NOBLE ENERGY, INC. - 415860578 | Minor source | No |
| NOBLE ENERGY, INC. - 415860587 | Minor source | No |
| NOBLE ENERGY, INC. - 415860600 | Minor source | No |
| NOBLE ENERGY, INC. - 415860603 | Minor source | No |
| NOBLE ENERGY, INC. - 415860616 | Minor source | No |
| NOBLE ENERGY, INC. - 415860617 | Minor source | No |
| NOBLE ENERGY, INC. - 415860622 | Minor source | No |
| NOBLE ENERGY, INC. - 415860624 | Minor source | No |
| NOBLE ENERGY, INC. - 415860636 | Minor source | No |
| NOBLE ENERGY, INC. - 415860642 | Minor source | No |
| NOBLE ENERGY, INC. - 415860651 | Minor source | No |
| NOBLE ENERGY, INC. - 415860671 | Minor source | No |
| NOBLE ENERGY, INC. - 415860679 | Minor source | No |
| NOBLE ENERGY, INC. - 415860681 | Minor source | No |
| NOBLE ENERGY, INC. - 415860693 | Minor source | No |
| NOBLE ENERGY, INC. - 415860695 | Minor source | No |
| NOBLE ENERGY, INC. - 415860717 | Minor source | No |
| NOBLE ENERGY, INC. - 415860723 | Minor source | No |
| NOBLE ENERGY, INC. - 415860731 | Minor source | No |
| NOBLE ENERGY, INC. - 415860732 | Minor source | No |
| NOBLE ENERGY, INC. - 415860734 | Minor source | No |
| NOBLE ENERGY, INC. - 415860738 | Minor source | No |
| NOBLE ENERGY, INC. - 415860748 | Minor source | No |
| NOBLE ENERGY, INC. - 415860750 | Minor source | No |
| NOBLE ENERGY, INC. - 415860754 | Minor source | No |
| NOBLE ENERGY, INC. - 415860757 | Minor source | No |
| NOBLE ENERGY, INC. - 415860758 | Minor source | No |
| NOBLE ENERGY, INC. - 415860768 | Minor source | No |
| NOBLE ENERGY, INC. - 415860769 | Minor source | No |
| NOBLE ENERGY, INC. - 415860777 | Minor source | No |
| NOBLE ENERGY, INC. - 415860779 | Minor source | No |
| NOBLE ENERGY, INC. - 415860784 | Minor source | No |
| NOBLE ENERGY, INC. - 415860785 | Minor source | No |
| NOBLE ENERGY, INC. - 415860789 | Minor source | No |
| NOBLE ENERGY, INC. - 415860801 | Minor source | No |
| NOBLE ENERGY, INC. - 415860808 | Minor source | No |
| NOBLE ENERGY, INC. - 415860809 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.