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 #415753751 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415779624 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415810339 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #415811357 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #81380300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #90013400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #90016800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #90087800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #90660900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91325200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91325300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91349000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91353700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91354500 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91354800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91460300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91472100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91477100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91482400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91508800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91511000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91532000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91532100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #91604100 | Minor source | No |
| NOBLE ENERGY POLLCK HADDIX #10038400 | Minor source | No |
| NOBLE ENERGY- 11374500 SEE 123-9BEC | Minor source | No |
| NOBLE ENERGY- BALL RANCH T7N-R63W-S3 L01 | Minor source | No |
| NOBLE ENERGY- BATT #415688851, 415688852 | Minor source | No |
| NOBLE ENERGY- BATTERY #10078100 | Minor source | No |
| NOBLE ENERGY- BATTERY #11533900 | Minor source | No |
| NOBLE ENERGY- BATTERY #415687738 | Minor source | No |
| NOBLE ENERGY- BATTERY #415689107 | Minor source | No |
| NOBLE ENERGY-BALL RANCH T7N-R63W-S15 L02 | Minor source | No |
| NOBLE ENERGY-WELLS RANCH AE 30 ECONODE | Synthetic minor source | Yes |
| NOBLE ENERGY, INC - BADGER FED T8N-R60W- | Minor source | No |
| NOBLE ENERGY, INC - BAY ROUSE UX | Minor source | No |
| NOBLE ENERGY, INC - BOHOA SUN SOIL | Minor source | No |
| NOBLE ENERGY, INC - BOULTER FRANK | Minor source | No |
| NOBLE ENERGY, INC - BRINGELSON | Minor source | No |
| NOBLE ENERGY, INC - CASTER PC | Synthetic minor source | No |
| NOBLE ENERGY, INC - DECHANT 2E RANCH | Minor source | No |
| NOBLE ENERGY, INC - DINNER T6N-R65W-S14 | Minor source | No |
| NOBLE ENERGY, INC - DP426-430 H01-12 ECO | Minor source | No |
| NOBLE ENERGY, INC - FRAN LUTZ | Synthetic minor source | No |
| NOBLE ENERGY, INC - FRICK T4N-R64W-S18 L | Minor source | No |
| NOBLE ENERGY, INC - GUTTERSEN ST T4N-R63 | Minor source | No |
| NOBLE ENERGY, INC - GWAA T5N-R65W-S2 L02 | Minor source | No |
| NOBLE ENERGY, INC - OSTER | Minor source | No |
| NOBLE ENERGY, INC - TURMAN RAY T7N-R63W | Minor source | No |
| NOBLE ENERGY, INC- SLW GREEN VINCE ST T5 | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. | Minor source | No |
| NOBLE ENERGY, INC. - # 10091700 | Minor source | No |
| NOBLE ENERGY, INC. - # 117203 | Minor source | No |
| NOBLE ENERGY, INC. - # 117348 | Minor source | No |
| NOBLE ENERGY, INC. - # 117349 | Minor source | No |
| NOBLE ENERGY, INC. - # 117433 | Minor source | No |
| NOBLE ENERGY, INC. - # 11744600 | Minor source | No |
| NOBLE ENERGY, INC. - # 11744701 | Minor source | No |
| NOBLE ENERGY, INC. - # 11745700 | Minor source | No |
| NOBLE ENERGY, INC. - # 11747700 | Minor source | No |
| NOBLE ENERGY, INC. - # 11748601 | Minor source | No |
| NOBLE ENERGY, INC. - # 11748602 | Minor source | No |
| NOBLE ENERGY, INC. - # 11748603 | Minor source | No |
| NOBLE ENERGY, INC. - # 11748605 | Minor source | No |
| NOBLE ENERGY, INC. - # 11748606 | Minor source | No |
| NOBLE ENERGY, INC. - # 11748607 | Minor source | No |
| NOBLE ENERGY, INC. - # 118291 | Minor source | No |
| NOBLE ENERGY, INC. - # 11831002 | Minor source | No |
| NOBLE ENERGY, INC. - # 415663397 | Minor source | No |
| NOBLE ENERGY, INC. - # 415663407 | Minor source | No |
| NOBLE ENERGY, INC. - # 415663722 | Minor source | No |
| NOBLE ENERGY, INC. - # 415663887 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.