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 #415779660 | Minor source | No |
| NOBLE TANK BATTERY #415779661 | Minor source | No |
| NOBLE TANK BATTERY #415779667 | Minor source | No |
| NOBLE TANK BATTERY #415779669 | Minor source | No |
| NOBLE TANK BATTERY #415779671 | Minor source | No |
| NOBLE TANK BATTERY #415779672 | Minor source | No |
| NOBLE TANK BATTERY #415779673 | Minor source | No |
| NOBLE TANK BATTERY #415779678 | Minor source | No |
| NOBLE TANK BATTERY #415779679 | Minor source | No |
| NOBLE TANK BATTERY #415779680 | Minor source | No |
| NOBLE TANK BATTERY #415779682 | Minor source | No |
| NOBLE TANK BATTERY #415779687 | Minor source | No |
| NOBLE TANK BATTERY #415779688 | Minor source | No |
| NOBLE TANK BATTERY #415779692 | Minor source | No |
| NOBLE TANK BATTERY #415779694 | Minor source | No |
| NOBLE TANK BATTERY #415779700 | Minor source | No |
| NOBLE TANK BATTERY #415779701 | Minor source | No |
| NOBLE TANK BATTERY #415779702 | Minor source | No |
| NOBLE TANK BATTERY #415779710 | Minor source | No |
| NOBLE TANK BATTERY #415779712 | Minor source | No |
| NOBLE TANK BATTERY #415779716 | Minor source | No |
| NOBLE TANK BATTERY #415779718 | Minor source | No |
| NOBLE TANK BATTERY #415779725 | Minor source | No |
| NOBLE TANK BATTERY #415779728 | Minor source | No |
| NOBLE TANK BATTERY #415779746 | Minor source | No |
| NOBLE TANK BATTERY #415779751 | Minor source | No |
| NOBLE TANK BATTERY #415779759 | Minor source | No |
| NOBLE TANK BATTERY #415779763 | Minor source | No |
| NOBLE TANK BATTERY #415779769 | Minor source | No |
| NOBLE TANK BATTERY #415779770 | Minor source | No |
| NOBLE TANK BATTERY #415779772 | Minor source | No |
| NOBLE TANK BATTERY #415779778 | Minor source | No |
| NOBLE TANK BATTERY #415779779 | Minor source | No |
| NOBLE TANK BATTERY #415779780 | Minor source | No |
| NOBLE TANK BATTERY #415779789 | Minor source | No |
| NOBLE TANK BATTERY #415779790 | Minor source | No |
| NOBLE TANK BATTERY #415779802 | Minor source | No |
| NOBLE TANK BATTERY #415779804 | Minor source | No |
| NOBLE TANK BATTERY #415779805 | Minor source | No |
| NOBLE TANK BATTERY #415779820 | Minor source | No |
| NOBLE TANK BATTERY #415779824 | Minor source | No |
| NOBLE TANK BATTERY #415779827 | Minor source | No |
| NOBLE TANK BATTERY #415779835 | Minor source | No |
| NOBLE TANK BATTERY #415779838 | Minor source | No |
| NOBLE TANK BATTERY #415779845 | Minor source | No |
| NOBLE TANK BATTERY #415779853 | Minor source | No |
| NOBLE TANK BATTERY #415779854 | Minor source | No |
| NOBLE TANK BATTERY #415779858 | Minor source | No |
| NOBLE TANK BATTERY #415779859 | Minor source | No |
| NOBLE TANK BATTERY #415779865 | Minor source | No |
| NOBLE TANK BATTERY #415779875 | Minor source | No |
| NOBLE TANK BATTERY #415779876 | Minor source | No |
| NOBLE TANK BATTERY #415779877 | Minor source | No |
| NOBLE TANK BATTERY #415779904 | Minor source | No |
| NOBLE TANK BATTERY #415779910 | Minor source | No |
| NOBLE TANK BATTERY #415779923 | Minor source | No |
| NOBLE TANK BATTERY #415779927 | Minor source | No |
| NOBLE TANK BATTERY #415779931 | Minor source | No |
| NOBLE TANK BATTERY #415779951 | Minor source | No |
| NOBLE TANK BATTERY #415779955 | Minor source | No |
| NOBLE TANK BATTERY #415779960 | Minor source | No |
| NOBLE TANK BATTERY #415779961 | Minor source | No |
| NOBLE TANK BATTERY #415779963 | Minor source | No |
| NOBLE TANK BATTERY #415779971 | Minor source | No |
| NOBLE TANK BATTERY #415779972 | Minor source | No |
| NOBLE TANK BATTERY #415779973 | Minor source | No |
| NOBLE TANK BATTERY #415779974 | Minor source | No |
| NOBLE TANK BATTERY #415779979 | Minor source | No |
| NOBLE TANK BATTERY #415779981 | Minor source | No |
| NOBLE TANK BATTERY #415779990 | Minor source | No |
| NOBLE TANK BATTERY #415785842 | Minor source | No |
| NOBLE TANK BATTERY #415790472 | Minor source | No |
| NOBLE TANK BATTERY #415790487 | Minor source | No |
| NOBLE TANK BATTERY #415790489 | Minor source | No |
| NOBLE TANK BATTERY #415790499 | Minor source | No |
| NOBLE TANK BATTERY #415790508 | Minor source | No |
| NOBLE TANK BATTERY #415790520 | Minor source | No |
| NOBLE TANK BATTERY #415790521 | Minor source | No |
| NOBLE TANK BATTERY #415790617 | Minor source | No |
| NOBLE TANK BATTERY #415790669 | Minor source | No |
| NOBLE TANK BATTERY #415790684 | Minor source | No |
| NOBLE TANK BATTERY #415790686 | Minor source | No |
| NOBLE TANK BATTERY #415791129 | Minor source | No |
| NOBLE TANK BATTERY #415791517 | Minor source | No |
| NOBLE TANK BATTERY #415791527 | Minor source | No |
| NOBLE TANK BATTERY #415792010 | Minor source | No |
| NOBLE TANK BATTERY #415797679 | Minor source | No |
| NOBLE TANK BATTERY #415797688 | Minor source | No |
| NOBLE TANK BATTERY #415797882 | Minor source | No |
| NOBLE TANK BATTERY #415798147 | Minor source | No |
| NOBLE TANK BATTERY #415798148 | Minor source | No |
| NOBLE TANK BATTERY #415798155 | Minor source | No |
| NOBLE TANK BATTERY #415798156 | Minor source | No |
| NOBLE TANK BATTERY #415798157 | Minor source | No |
| NOBLE TANK BATTERY #415798285 | Synthetic minor source | No |
| NOBLE TANK BATTERY #415798286 | Minor source | No |
| NOBLE TANK BATTERY #415798287 | Minor source | No |
| NOBLE TANK BATTERY #415798775 | Minor source | No |
| NOBLE TANK BATTERY #415798776 | Minor source | No |
| NOBLE TANK BATTERY #415799315 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.