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. - BATTERY #415806788 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415809216 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415809465 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415809468 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415809663 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415809666 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415809925 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415809926 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415809998 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415810108 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415810390 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415810652 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415810659 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415812779 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415813482 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415813787 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415814018 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415814020 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415814022 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415814023 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415814027 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415814057 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415814826 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415815500 | Synthetic minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415815692 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415815699 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415817752 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415819903 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415828481 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415828725 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415828728 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415829063 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415830828 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415830829 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415831530 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415831532 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415831645 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415831940 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415832304 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415832306 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415832863 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #415833399 | Minor source | No |
| NOBLE ENERGY, INC. - BATTERY #91338200 | Minor source | No |
| NOBLE ENERGY, INC. - DABNEY SHELTON | Minor source | No |
| NOBLE ENERGY, INC. - DAN WHITNEY | Minor source | No |
| NOBLE ENERGY, INC. - EACHUS FRUMAN RITCH | Minor source | No |
| NOBLE ENERGY, INC. - ENG-11364500 | Minor source | No |
| NOBLE ENERGY, INC. - ENG-81439800 | Minor source | No |
| NOBLE ENERGY, INC. - HETTINGER ADAMS MCW | Minor source | No |
| NOBLE ENERGY, INC. - JOHNSON #11737904 | Minor source | No |
| NOBLE ENERGY, INC. - JOHNSON VICTOR T4N- | Minor source | No |
| NOBLE ENERGY, INC. - KARAKAKES T3N-R65W | Minor source | No |
| NOBLE ENERGY, INC. - KARCH 415815703 | Minor source | No |
| NOBLE ENERGY, INC. - KATE RED GUTTERSEN | Minor source | No |
| NOBLE ENERGY, INC. - LAZY D ZN 03-15H | Minor source | No |
| NOBLE ENERGY, INC. - MARIE GUTTERSEN | Minor source | No |
| NOBLE ENERGY, INC. - MCALLISTER | Minor source | No |
| NOBLE ENERGY, INC. - PATRIOT | Minor source | No |
| NOBLE ENERGY, INC. - RAMIREZ T7N-R63W-S2 | Minor source | No |
| NOBLE ENERGY, INC. - REGALIA T3N-R65W-S2 | Minor source | No |
| NOBLE ENERGY, INC. - ROMERO T4N-R65W-S3 | Minor source | No |
| NOBLE ENERGY, INC. - SATER T4N-R63W-S18 | Minor source | No |
| NOBLE ENERGY, INC. - SATER T4N-R63W-S18 | Minor source | No |
| NOBLE ENERGY, INC. - SHABLE | Minor source | No |
| NOBLE ENERGY, INC. - SHELTON ALLISON T4N | Minor source | No |
| NOBLE ENERGY, INC. - SOONER ST | Minor source | No |
| NOBLE ENERGY, INC. - SPAUR USX | Minor source | No |
| NOBLE ENERGY, INC. - SPIKE ELISE ST | Minor source | No |
| NOBLE ENERGY, INC. - SPIKE ELISE ST T4N- | Minor source | No |
| NOBLE ENERGY, INC. - SPIKE GUTTERS | Minor source | No |
| NOBLE ENERGY, INC. - SPIKE JIGGER ST | Minor source | No |
| NOBLE ENERGY, INC. - SPIKE ST | Minor source | No |
| NOBLE ENERGY, INC. - SPIKE ST | Minor source | No |
| NOBLE ENERGY, INC. - ST BOOTH L04 | Minor source | No |
| NOBLE ENERGY, INC. - ST T8N-R61W-S36 L01 | Minor source | No |
| NOBLE ENERGY, INC. - TANIA BLUE.. | Synthetic minor source | No |
| NOBLE ENERGY, INC. - TREBOR | Minor source | No |
| NOBLE ENERGY, INC. - UPRC | Minor source | No |
| NOBLE ENERGY, INC. - UPRC FIVE RIVERS | Minor source | No |
| NOBLE ENERGY, INC. - WELLS RANCH | Minor source | No |
| NOBLE ENERGY, INC. -#113710 | Minor source | No |
| NOBLE ENERGY, INC. # 10106200 | Minor source | No |
| NOBLE ENERGY, INC. # 11309800 | Minor source | No |
| NOBLE ENERGY, INC. # 115900 | Minor source | No |
| NOBLE ENERGY, INC. # 11741200 | Minor source | No |
| NOBLE ENERGY, INC. # 11744800 | Minor source | No |
| NOBLE ENERGY, INC. # 11745500 | Minor source | No |
| NOBLE ENERGY, INC. # 11745600 | Minor source | No |
| NOBLE ENERGY, INC. # 11746101 | Minor source | No |
| NOBLE ENERGY, INC. # 11831009 | Minor source | No |
| NOBLE ENERGY, INC. # 81737900 | Minor source | No |
| NOBLE ENERGY, INC. # 81831000 | Minor source | No |
| NOBLE ENERGY, INC. #10102400 | Minor source | No |
| NOBLE ENERGY, INC. BATTERY # 114920 | Minor source | No |
| NOBLE ENERGY, INC. BATTERY # 11719900 | Minor source | No |
| NOBLE ENERGY, INC. BATTERY # 117310 | Minor source | No |
| NOBLE ENERGY, INC. BATTERY # 117371 | Minor source | No |
| NOBLE ENERGY, INC. BATTERY # 11740500 | Minor source | No |
| NOBLE ENERGY, INC. BATTERY #100618 | Minor source | No |
| NOBLE ENERGY, INC.- BATT # 415674391 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.