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.- BATT #815267 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415662914 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415664184 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415664185 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415664468 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415664809 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415668552 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415668555 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415668557 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415668565 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415669242 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415669243 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415674188 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415675259 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415676551 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY # 415676779 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY #415664463 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY #415675130 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY #415682145 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY #415682824 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY #415687073 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY #415689329 | Minor source | No |
| NOBLE ENERGY, INC.- BATTERY #415690094 | Minor source | No |
| NOBLE ENERGY, INC.- WELLS RANCH AA T6N-R | Minor source | No |
| NOBLE ENERGY, INC.-BATTERY # 11636600 | Minor source | No |
| NOBLE ENERGY, INC.-BATTERY # 11678600 | Minor source | No |
| NOBLE ENERGY, INC.-BATTERY # 11679500 | Minor source | No |
| NOBLE ENERGY, INC.-BATTERY # 91342500 | Minor source | No |
| NOBLE ENERGY. INC - CODY WHITE GUTTERSEN | Minor source | No |
| NOBLE ENGY - KAMMERZELL T4N-R66W-S6 L03 | Minor source | No |
| NOBLE ENGY- PTASNIK FED T9N-R59W-S33 L01 | Minor source | No |
| NOBLE ENRGY - LD28 GREYSON-BRECKEN T9N-R | Synthetic minor source | No |
| NOBLE ENRGY - WELLS RANCH AE32 ECONODE T | Minor source | No |
| NOBLE MIDSTREAM - PONY CREEK GAS PLANT | Synthetic minor source | No |
| NOBLE MIDSTREAM- RANGEVIEW A REMEDIATION | Minor source | No |
| NOBLE TANK BATTERY - LETTERLY USX | Synthetic minor source | No |
| NOBLE TANK BATTERY #10004600 | Minor source | No |
| NOBLE TANK BATTERY #10004800 | Minor source | No |
| NOBLE TANK BATTERY #10005500 | Minor source | No |
| NOBLE TANK BATTERY #10006600 | Minor source | No |
| NOBLE TANK BATTERY #10006800 | Minor source | No |
| NOBLE TANK BATTERY #10007500 | Minor source | No |
| NOBLE TANK BATTERY #10007700 | Minor source | No |
| NOBLE TANK BATTERY #10008600 | Minor source | No |
| NOBLE TANK BATTERY #10008800 | Minor source | No |
| NOBLE TANK BATTERY #10009000 | Minor source | No |
| NOBLE TANK BATTERY #10009800 | Minor source | No |
| NOBLE TANK BATTERY #10010000 | Minor source | No |
| NOBLE TANK BATTERY #10011000 | Minor source | No |
| NOBLE TANK BATTERY #10011200 | Minor source | No |
| NOBLE TANK BATTERY #10011500 | Minor source | No |
| NOBLE TANK BATTERY #10012300 | Minor source | No |
| NOBLE TANK BATTERY #10013500 | Minor source | No |
| NOBLE TANK BATTERY #10014700 | Minor source | No |
| NOBLE TANK BATTERY #10015500 | Minor source | No |
| NOBLE TANK BATTERY #10016400 | Minor source | No |
| NOBLE TANK BATTERY #10016800 | Minor source | No |
| NOBLE TANK BATTERY #10017400 | Minor source | No |
| NOBLE TANK BATTERY #10017800 | Minor source | No |
| NOBLE TANK BATTERY #10018200 | Minor source | No |
| NOBLE TANK BATTERY #10018700 | Minor source | No |
| NOBLE TANK BATTERY #10019500 | Minor source | No |
| NOBLE TANK BATTERY #10019900 | Minor source | No |
| NOBLE TANK BATTERY #10020400 | Minor source | No |
| NOBLE TANK BATTERY #10020500 | Minor source | No |
| NOBLE TANK BATTERY #10020600 | Minor source | No |
| NOBLE TANK BATTERY #10021300 | Minor source | No |
| NOBLE TANK BATTERY #10021800 | Minor source | No |
| NOBLE TANK BATTERY #10023400 | Minor source | No |
| NOBLE TANK BATTERY #10024600 | Minor source | No |
| NOBLE TANK BATTERY #10024900 | Minor source | No |
| NOBLE TANK BATTERY #10025100 | Minor source | No |
| NOBLE TANK BATTERY #10026100 | Minor source | No |
| NOBLE TANK BATTERY #10026700 | Minor source | No |
| NOBLE TANK BATTERY #10028400 | Minor source | No |
| NOBLE TANK BATTERY #10028500 | Minor source | No |
| NOBLE TANK BATTERY #10028600 | Minor source | No |
| NOBLE TANK BATTERY #10028700 | Minor source | No |
| NOBLE TANK BATTERY #10030500 | Minor source | No |
| NOBLE TANK BATTERY #10032500 | Minor source | No |
| NOBLE TANK BATTERY #10032600 | Minor source | No |
| NOBLE TANK BATTERY #10032900 | Minor source | No |
| NOBLE TANK BATTERY #10036500 | Minor source | No |
| NOBLE TANK BATTERY #10037000 | Minor source | No |
| NOBLE TANK BATTERY #10039600 | Minor source | No |
| NOBLE TANK BATTERY #10039900 | Minor source | No |
| NOBLE TANK BATTERY #10040200 | Minor source | No |
| NOBLE TANK BATTERY #10040300 | Minor source | No |
| NOBLE TANK BATTERY #10041300 | Minor source | No |
| NOBLE TANK BATTERY #10041900 | Minor source | No |
| NOBLE TANK BATTERY #10042700 | Minor source | No |
| NOBLE TANK BATTERY #10042800 | Minor source | No |
| NOBLE TANK BATTERY #10043600 | Minor source | No |
| NOBLE TANK BATTERY #10043900 | Minor source | No |
| NOBLE TANK BATTERY #10044000 | Minor source | No |
| NOBLE TANK BATTERY #10044200 | Minor source | No |
| NOBLE TANK BATTERY #10044500 | Minor source | No |
| NOBLE TANK BATTERY #10044700 | Minor source | No |
| NOBLE TANK BATTERY #10045400 | Minor source | No |
| NOBLE TANK BATTERY #10046200 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.