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 #415815705 | Minor source | No |
| NOBLE TANK BATTERY #415816020 | Minor source | No |
| NOBLE TANK BATTERY #415816024 | Minor source | No |
| NOBLE TANK BATTERY #415816025 | Minor source | No |
| NOBLE TANK BATTERY #415816239 | Minor source | No |
| NOBLE TANK BATTERY #415816240 | Minor source | No |
| NOBLE TANK BATTERY #415816249 | Minor source | No |
| NOBLE TANK BATTERY #415816251 | Minor source | No |
| NOBLE TANK BATTERY #415817747 | Minor source | No |
| NOBLE TANK BATTERY #415817748 | Minor source | No |
| NOBLE TANK BATTERY #415817749 | Minor source | No |
| NOBLE TANK BATTERY #415817756 | Minor source | No |
| NOBLE TANK BATTERY #415817757 | Minor source | No |
| NOBLE TANK BATTERY #415819893 | Minor source | No |
| NOBLE TANK BATTERY #415819894 | Minor source | No |
| NOBLE TANK BATTERY #415819895 | Minor source | No |
| NOBLE TANK BATTERY #415819898 | Minor source | No |
| NOBLE TANK BATTERY #415819900 | Minor source | No |
| NOBLE TANK BATTERY #415819901 | Minor source | No |
| NOBLE TANK BATTERY #415819905 | Minor source | No |
| NOBLE TANK BATTERY #415820459 | Minor source | No |
| NOBLE TANK BATTERY #415820529 | Minor source | No |
| NOBLE TANK BATTERY #415820684 | Minor source | No |
| NOBLE TANK BATTERY #415821313 | Minor source | No |
| NOBLE TANK BATTERY #415821314 | Minor source | No |
| NOBLE TANK BATTERY #415821318 | Minor source | No |
| NOBLE TANK BATTERY #415821468 | Minor source | No |
| NOBLE TANK BATTERY #415821494 | Minor source | No |
| NOBLE TANK BATTERY #415821495 | Minor source | No |
| NOBLE TANK BATTERY #415821496 | Minor source | No |
| NOBLE TANK BATTERY #415822905 | Minor source | No |
| NOBLE TANK BATTERY #415823252 | Synthetic minor source | No |
| NOBLE TANK BATTERY #415823257 | Minor source | No |
| NOBLE TANK BATTERY #415823549 | Minor source | No |
| NOBLE TANK BATTERY #415824055 | Minor source | No |
| NOBLE TANK BATTERY #415824062 | Minor source | No |
| NOBLE TANK BATTERY #415824547 | Minor source | No |
| NOBLE TANK BATTERY #415825137 | Minor source | No |
| NOBLE TANK BATTERY #415825140 | Minor source | No |
| NOBLE TANK BATTERY #415825681 | Minor source | No |
| NOBLE TANK BATTERY #415825682 | Minor source | No |
| NOBLE TANK BATTERY #415825699 | Minor source | No |
| NOBLE TANK BATTERY #415825705 | Minor source | No |
| NOBLE TANK BATTERY #415825706 | Minor source | No |
| NOBLE TANK BATTERY #415826125 | Minor source | No |
| NOBLE TANK BATTERY #415826127 | Minor source | No |
| NOBLE TANK BATTERY #415826451 | Minor source | No |
| NOBLE TANK BATTERY #415826454 | Minor source | No |
| NOBLE TANK BATTERY #415826942 | Minor source | No |
| NOBLE TANK BATTERY #41582708 STEWART FED | Minor source | No |
| NOBLE TANK BATTERY #415827082 | Minor source | No |
| NOBLE TANK BATTERY #415827088 | Minor source | No |
| NOBLE TANK BATTERY #415828129 | Minor source | No |
| NOBLE TANK BATTERY #415828480 | Minor source | No |
| NOBLE TANK BATTERY #415828486 | Minor source | No |
| NOBLE TANK BATTERY #415828488 | Minor source | No |
| NOBLE TANK BATTERY #415828489 | Minor source | No |
| NOBLE TANK BATTERY #415828726 | Minor source | No |
| NOBLE TANK BATTERY #415828729 | Minor source | No |
| NOBLE TANK BATTERY #415829620 | Minor source | No |
| NOBLE TANK BATTERY #415830366 | Minor source | No |
| NOBLE TANK BATTERY #415830367 | Minor source | No |
| NOBLE TANK BATTERY #415830811 | Minor source | No |
| NOBLE TANK BATTERY #415830827 | Minor source | No |
| NOBLE TANK BATTERY #415831522 | Minor source | No |
| NOBLE TANK BATTERY #415831534 | Minor source | No |
| NOBLE TANK BATTERY #415831650 | Synthetic minor source | No |
| NOBLE TANK BATTERY #415831938 | Synthetic minor source | No |
| NOBLE TANK BATTERY #415832291 | Minor source | No |
| NOBLE TANK BATTERY #415832305 | Minor source | No |
| NOBLE TANK BATTERY #415833560 | Minor source | No |
| NOBLE TANK BATTERY #415834269 | Minor source | No |
| NOBLE TANK BATTERY #415835024 | Minor source | No |
| NOBLE TANK BATTERY #415835027 | Minor source | No |
| NOBLE TANK BATTERY #415835031 | Minor source | No |
| NOBLE TANK BATTERY #415835348 | Minor source | No |
| NOBLE TANK BATTERY #415835355 | Minor source | No |
| NOBLE TANK BATTERY #415836298 | Minor source | No |
| NOBLE TANK BATTERY #415837216 | Minor source | No |
| NOBLE TANK BATTERY #415838232 | Minor source | No |
| NOBLE TANK BATTERY #415838233 | Minor source | No |
| NOBLE TANK BATTERY #415839223 | Minor source | No |
| NOBLE TANK BATTERY #415839224 | Minor source | No |
| NOBLE TANK BATTERY #415840091 | Minor source | No |
| NOBLE TANK BATTERY #415840094 | Minor source | No |
| NOBLE TANK BATTERY #415840096 | Minor source | No |
| NOBLE TANK BATTERY #415840097 | Minor source | No |
| NOBLE TANK BATTERY #415841343 | Minor source | No |
| NOBLE TANK BATTERY #415844548 | Minor source | No |
| NOBLE TANK BATTERY #415860497 | Minor source | No |
| NOBLE TANK BATTERY #415860501 | Minor source | No |
| NOBLE TANK BATTERY #415860514 | Minor source | No |
| NOBLE TANK BATTERY #415860519 | Minor source | No |
| NOBLE TANK BATTERY #415860543 | Minor source | No |
| NOBLE TANK BATTERY #415860545 | Minor source | No |
| NOBLE TANK BATTERY #415860557 | Minor source | No |
| NOBLE TANK BATTERY #415860558 | Minor source | No |
| NOBLE TANK BATTERY #415860571 | Minor source | No |
| NOBLE TANK BATTERY #415860572 | Minor source | No |
| NOBLE TANK BATTERY #415860579 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.