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 #11352000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11352000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11354300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11354700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11355100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11355300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11355800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11356100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11357700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11357900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11358900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11359300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11362000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11362600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11362700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11362800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11363200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11364200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11365500 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11367300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11367700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11368700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11369100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11373000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11374900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11376900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11377200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11378400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11383600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11385700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11400900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11423500 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11435100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11457600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11457800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11461300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11462900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11463200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11466300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11469400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11472600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11473900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11474000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11474700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11475200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11475300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11475700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11475800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11476100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11476400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11476700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11477100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11486900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11492100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11493400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11508800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11522500 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11526700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11532000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11532100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11532200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11534000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11535700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11537700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11600200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11601200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11603101 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11603900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11606600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11606800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11607400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11608800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11610500 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11613101 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11613701 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11614200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11614301 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11614900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11617800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11617900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11618400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11619400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11619600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11619700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11665300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11666200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #11713200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415679079 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415687736 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415689632 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415690866 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415694141 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415698953 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415713891 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415713893 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415742625 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415742629 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415744786 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415745289 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415747593 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.