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 TANK BATTERY #415701574 | Minor source | No |
| NOBLE TANK BATTERY #415701576 | Minor source | No |
| NOBLE TANK BATTERY #415701577 | Minor source | No |
| NOBLE TANK BATTERY #415703334 | Minor source | No |
| NOBLE TANK BATTERY #415713237 | Minor source | No |
| NOBLE TANK BATTERY #415713804 | Minor source | No |
| NOBLE TANK BATTERY #415713888 | Minor source | No |
| NOBLE TANK BATTERY #415713890 | Minor source | No |
| NOBLE TANK BATTERY #415713892 | Minor source | No |
| NOBLE TANK BATTERY #415734329 | Minor source | No |
| NOBLE TANK BATTERY #415734333 | Minor source | No |
| NOBLE TANK BATTERY #415736143 | Minor source | No |
| NOBLE TANK BATTERY #415736264 | Minor source | No |
| NOBLE TANK BATTERY #415741770 | Minor source | No |
| NOBLE TANK BATTERY #415742624 | Minor source | No |
| NOBLE TANK BATTERY #415746179 | Minor source | No |
| NOBLE TANK BATTERY #415747012 | Minor source | No |
| NOBLE TANK BATTERY #415747594 | Minor source | No |
| NOBLE TANK BATTERY #415750507 | Minor source | No |
| NOBLE TANK BATTERY #415751245 | Minor source | No |
| NOBLE TANK BATTERY #415753107 | Minor source | No |
| NOBLE TANK BATTERY #415753716 | Minor source | No |
| NOBLE TANK BATTERY #415753718 | Minor source | No |
| NOBLE TANK BATTERY #415768738 | Minor source | No |
| NOBLE TANK BATTERY #415769362 | Minor source | No |
| NOBLE TANK BATTERY #415771042 | Minor source | No |
| NOBLE TANK BATTERY #415771043 | Minor source | No |
| NOBLE TANK BATTERY #415771046 | Minor source | No |
| NOBLE TANK BATTERY #415771048 | Minor source | No |
| NOBLE TANK BATTERY #415771162 | Minor source | No |
| NOBLE TANK BATTERY #415771218 | Minor source | No |
| NOBLE TANK BATTERY #415771302 | Minor source | No |
| NOBLE TANK BATTERY #415771307 | Minor source | No |
| NOBLE TANK BATTERY #415771309 | Minor source | No |
| NOBLE TANK BATTERY #415771311 | Minor source | No |
| NOBLE TANK BATTERY #415771312 | Minor source | No |
| NOBLE TANK BATTERY #415771338 | Minor source | No |
| NOBLE TANK BATTERY #415771342 | Minor source | No |
| NOBLE TANK BATTERY #415771354 | Minor source | No |
| NOBLE TANK BATTERY #415771398 | Minor source | No |
| NOBLE TANK BATTERY #415771399 | Minor source | No |
| NOBLE TANK BATTERY #415771400 | Minor source | No |
| NOBLE TANK BATTERY #415771401 | Minor source | No |
| NOBLE TANK BATTERY #415771409 | Minor source | No |
| NOBLE TANK BATTERY #415771410 | Minor source | No |
| NOBLE TANK BATTERY #415771411 | Minor source | No |
| NOBLE TANK BATTERY #415771412 | Minor source | No |
| NOBLE TANK BATTERY #415771425 | Minor source | No |
| NOBLE TANK BATTERY #415771426 | Minor source | No |
| NOBLE TANK BATTERY #415771427 | Minor source | No |
| NOBLE TANK BATTERY #415771428 | Minor source | No |
| NOBLE TANK BATTERY #415771429 | Minor source | No |
| NOBLE TANK BATTERY #415771430 | Minor source | No |
| NOBLE TANK BATTERY #415771431 | Minor source | No |
| NOBLE TANK BATTERY #415771432 | Minor source | No |
| NOBLE TANK BATTERY #415771446 | Minor source | No |
| NOBLE TANK BATTERY #415771452 | Minor source | No |
| NOBLE TANK BATTERY #415771458 | Minor source | No |
| NOBLE TANK BATTERY #415771488 | Minor source | No |
| NOBLE TANK BATTERY #415771489 | Minor source | No |
| NOBLE TANK BATTERY #415771490 | Minor source | No |
| NOBLE TANK BATTERY #415771491 | Minor source | No |
| NOBLE TANK BATTERY #415771494 | Minor source | No |
| NOBLE TANK BATTERY #415771496 | Minor source | No |
| NOBLE TANK BATTERY #415771497 | Minor source | No |
| NOBLE TANK BATTERY #415771523 | Minor source | No |
| NOBLE TANK BATTERY #415771536 | Minor source | No |
| NOBLE TANK BATTERY #415771590 | Minor source | No |
| NOBLE TANK BATTERY #415771591 | Minor source | No |
| NOBLE TANK BATTERY #415771592 | Minor source | No |
| NOBLE TANK BATTERY #415771593 | Minor source | No |
| NOBLE TANK BATTERY #415771595 | Synthetic minor source | No |
| NOBLE TANK BATTERY #415773812 | Minor source | No |
| NOBLE TANK BATTERY #415773829 | Minor source | No |
| NOBLE TANK BATTERY #415774073 | Minor source | No |
| NOBLE TANK BATTERY #415774600 | Minor source | No |
| NOBLE TANK BATTERY #415779499 | Minor source | No |
| NOBLE TANK BATTERY #415779502 | Minor source | No |
| NOBLE TANK BATTERY #415779505 | Minor source | No |
| NOBLE TANK BATTERY #415779507 | Minor source | No |
| NOBLE TANK BATTERY #415779511 | Minor source | No |
| NOBLE TANK BATTERY #415779512 | Minor source | No |
| NOBLE TANK BATTERY #415779514 | Minor source | No |
| NOBLE TANK BATTERY #415779538 | Minor source | No |
| NOBLE TANK BATTERY #415779542 | Minor source | No |
| NOBLE TANK BATTERY #415779549 | Minor source | No |
| NOBLE TANK BATTERY #415779551 | Minor source | No |
| NOBLE TANK BATTERY #415779555 | Minor source | No |
| NOBLE TANK BATTERY #415779556 | Minor source | No |
| NOBLE TANK BATTERY #415779617 | Minor source | No |
| NOBLE TANK BATTERY #415779620 | Minor source | No |
| NOBLE TANK BATTERY #415779623 | Minor source | No |
| NOBLE TANK BATTERY #415779627 | Minor source | No |
| NOBLE TANK BATTERY #415779629 | Minor source | No |
| NOBLE TANK BATTERY #415779636 | Minor source | No |
| NOBLE TANK BATTERY #415779639 | Minor source | No |
| NOBLE TANK BATTERY #415779640 | Minor source | No |
| NOBLE TANK BATTERY #415779648 | Minor source | No |
| NOBLE TANK BATTERY #415779650 | Minor source | No |
| NOBLE TANK BATTERY #415779655 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.