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 #415799318 | Minor source | No |
| NOBLE TANK BATTERY #415800772 | Minor source | No |
| NOBLE TANK BATTERY #415801238 | Minor source | No |
| NOBLE TANK BATTERY #415801656 | Minor source | No |
| NOBLE TANK BATTERY #415803159 | Minor source | No |
| NOBLE TANK BATTERY #415803160 | Minor source | No |
| NOBLE TANK BATTERY #415803175 | Minor source | No |
| NOBLE TANK BATTERY #415803193 | Minor source | No |
| NOBLE TANK BATTERY #415803194 | Minor source | No |
| NOBLE TANK BATTERY #415803195 | Minor source | No |
| NOBLE TANK BATTERY #415803206 | Minor source | No |
| NOBLE TANK BATTERY #415804873 | Minor source | No |
| NOBLE TANK BATTERY #415805544 | Minor source | No |
| NOBLE TANK BATTERY #415805554 | Minor source | No |
| NOBLE TANK BATTERY #415806526 | Synthetic minor source | No |
| NOBLE TANK BATTERY #415807082 | Synthetic minor source | No |
| NOBLE TANK BATTERY #415808285 | Minor source | No |
| NOBLE TANK BATTERY #415808289 | Minor source | No |
| NOBLE TANK BATTERY #415808626 | Minor source | No |
| NOBLE TANK BATTERY #415808773 | Minor source | No |
| NOBLE TANK BATTERY #415809045 | Minor source | No |
| NOBLE TANK BATTERY #415809218 | Minor source | No |
| NOBLE TANK BATTERY #415809219 | Minor source | No |
| NOBLE TANK BATTERY #415809259 | Minor source | No |
| NOBLE TANK BATTERY #415809306 | Minor source | No |
| NOBLE TANK BATTERY #415809476 | Minor source | No |
| NOBLE TANK BATTERY #415809659 | Minor source | No |
| NOBLE TANK BATTERY #415809661 | Minor source | No |
| NOBLE TANK BATTERY #415809662 | Minor source | No |
| NOBLE TANK BATTERY #415809665 | Minor source | No |
| NOBLE TANK BATTERY #415809667 | Minor source | No |
| NOBLE TANK BATTERY #415809668 | Minor source | No |
| NOBLE TANK BATTERY #415809670 | Minor source | No |
| NOBLE TANK BATTERY #415809927 | Minor source | No |
| NOBLE TANK BATTERY #415810391 | Minor source | No |
| NOBLE TANK BATTERY #415810649 | Minor source | No |
| NOBLE TANK BATTERY #415810654 | Minor source | No |
| NOBLE TANK BATTERY #415810657 | Minor source | No |
| NOBLE TANK BATTERY #415810663 | Minor source | No |
| NOBLE TANK BATTERY #415810664 | Minor source | No |
| NOBLE TANK BATTERY #415810768 | Minor source | No |
| NOBLE TANK BATTERY #415811351 | Minor source | No |
| NOBLE TANK BATTERY #415811354 | Minor source | No |
| NOBLE TANK BATTERY #415811359 | Minor source | No |
| NOBLE TANK BATTERY #415811559 | Minor source | No |
| NOBLE TANK BATTERY #415811560 | Minor source | No |
| NOBLE TANK BATTERY #415811605 | Minor source | No |
| NOBLE TANK BATTERY #415811607 | Minor source | No |
| NOBLE TANK BATTERY #415811959 | Minor source | No |
| NOBLE TANK BATTERY #415811960 | Minor source | No |
| NOBLE TANK BATTERY #415812010 | Minor source | No |
| NOBLE TANK BATTERY #415812775 | Minor source | No |
| NOBLE TANK BATTERY #415812782 | Minor source | No |
| NOBLE TANK BATTERY #415812784 | Minor source | No |
| NOBLE TANK BATTERY #415812937 | Minor source | No |
| NOBLE TANK BATTERY #415812983 | Minor source | No |
| NOBLE TANK BATTERY #415812988 | Minor source | No |
| NOBLE TANK BATTERY #415813479 | Minor source | No |
| NOBLE TANK BATTERY #415813480 | Minor source | No |
| NOBLE TANK BATTERY #415813483 | Minor source | No |
| NOBLE TANK BATTERY #415813485 | Synthetic minor source | No |
| NOBLE TANK BATTERY #415813788 | Minor source | No |
| NOBLE TANK BATTERY #415814021 | Minor source | No |
| NOBLE TANK BATTERY #415814024 | Minor source | No |
| NOBLE TANK BATTERY #415814028 | Minor source | No |
| NOBLE TANK BATTERY #415814037 | Minor source | No |
| NOBLE TANK BATTERY #415814044 | Minor source | No |
| NOBLE TANK BATTERY #415814672 | Minor source | No |
| NOBLE TANK BATTERY #415814673 | Minor source | No |
| NOBLE TANK BATTERY #415814675 | Minor source | No |
| NOBLE TANK BATTERY #415814676 | Minor source | No |
| NOBLE TANK BATTERY #415814679 | Minor source | No |
| NOBLE TANK BATTERY #415814681 | Minor source | No |
| NOBLE TANK BATTERY #415814682 | Minor source | No |
| NOBLE TANK BATTERY #415814683 | Minor source | No |
| NOBLE TANK BATTERY #415814685 | Minor source | No |
| NOBLE TANK BATTERY #415814686 | Minor source | No |
| NOBLE TANK BATTERY #415814687 | Minor source | No |
| NOBLE TANK BATTERY #415814689 | Minor source | No |
| NOBLE TANK BATTERY #415814691 | Minor source | No |
| NOBLE TANK BATTERY #415814692 | Minor source | No |
| NOBLE TANK BATTERY #415814693 | Minor source | No |
| NOBLE TANK BATTERY #415814695 | Minor source | No |
| NOBLE TANK BATTERY #415814696 | Minor source | No |
| NOBLE TANK BATTERY #415814698 | Minor source | No |
| NOBLE TANK BATTERY #415814699 | Minor source | No |
| NOBLE TANK BATTERY #415814700 | Minor source | No |
| NOBLE TANK BATTERY #415814702 | Minor source | No |
| NOBLE TANK BATTERY #415814703 | Minor source | No |
| NOBLE TANK BATTERY #415814707 | Minor source | No |
| NOBLE TANK BATTERY #415815095 | Minor source | No |
| NOBLE TANK BATTERY #415815096 | Minor source | No |
| NOBLE TANK BATTERY #415815499 | Minor source | No |
| NOBLE TANK BATTERY #415815503 | Minor source | No |
| NOBLE TANK BATTERY #415815504 | Minor source | No |
| NOBLE TANK BATTERY #415815517 | Minor source | No |
| NOBLE TANK BATTERY #415815691 | Minor source | No |
| NOBLE TANK BATTERY #415815694 | Minor source | No |
| NOBLE TANK BATTERY #415815695 | Minor source | No |
| NOBLE TANK BATTERY #415815700 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.