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 #10046500 | Minor source | No |
| NOBLE TANK BATTERY #10047100 | Minor source | No |
| NOBLE TANK BATTERY #10047200 | Minor source | No |
| NOBLE TANK BATTERY #10047900 | Minor source | No |
| NOBLE TANK BATTERY #10048500 | Minor source | No |
| NOBLE TANK BATTERY #10050200 | Minor source | No |
| NOBLE TANK BATTERY #10050700 | Minor source | No |
| NOBLE TANK BATTERY #10051700 | Minor source | No |
| NOBLE TANK BATTERY #10051800 | Minor source | No |
| NOBLE TANK BATTERY #10052200 | Minor source | No |
| NOBLE TANK BATTERY #10052300 | Minor source | No |
| NOBLE TANK BATTERY #10054600 | Minor source | No |
| NOBLE TANK BATTERY #10058000 | Minor source | No |
| NOBLE TANK BATTERY #10059000 | Minor source | No |
| NOBLE TANK BATTERY #10059200 | Minor source | No |
| NOBLE TANK BATTERY #10059500 | Minor source | No |
| NOBLE TANK BATTERY #10060000 | Minor source | No |
| NOBLE TANK BATTERY #10062200 SCHAEFER | Minor source | No |
| NOBLE TANK BATTERY #10062400 | Minor source | No |
| NOBLE TANK BATTERY #10063600 | Minor source | No |
| NOBLE TANK BATTERY #10063700 | Minor source | No |
| NOBLE TANK BATTERY #10063800 | Minor source | No |
| NOBLE TANK BATTERY #10064200 | Minor source | No |
| NOBLE TANK BATTERY #10065200 | Minor source | No |
| NOBLE TANK BATTERY #10066900 | Minor source | No |
| NOBLE TANK BATTERY #10067000 | Minor source | No |
| NOBLE TANK BATTERY #10067700 | Minor source | No |
| NOBLE TANK BATTERY #10070600 | Minor source | No |
| NOBLE TANK BATTERY #10071200 | Minor source | No |
| NOBLE TANK BATTERY #10071700 | Minor source | No |
| NOBLE TANK BATTERY #10072200 | Minor source | No |
| NOBLE TANK BATTERY #10072500 | Minor source | No |
| NOBLE TANK BATTERY #10073600 | Minor source | No |
| NOBLE TANK BATTERY #10074200 | Minor source | No |
| NOBLE TANK BATTERY #10075200 | Minor source | No |
| NOBLE TANK BATTERY #10075500 | Minor source | No |
| NOBLE TANK BATTERY #10075900 | Minor source | No |
| NOBLE TANK BATTERY #10076200 | Minor source | No |
| NOBLE TANK BATTERY #10076300 | Minor source | No |
| NOBLE TANK BATTERY #10078200 | Minor source | No |
| NOBLE TANK BATTERY #10078600 | Minor source | No |
| NOBLE TANK BATTERY #10078800 | Minor source | No |
| NOBLE TANK BATTERY #10079100 | Minor source | No |
| NOBLE TANK BATTERY #10079700 | Minor source | No |
| NOBLE TANK BATTERY #10080400 | Minor source | No |
| NOBLE TANK BATTERY #10081900 | Minor source | No |
| NOBLE TANK BATTERY #10084200 | Minor source | No |
| NOBLE TANK BATTERY #10085300 | Minor source | No |
| NOBLE TANK BATTERY #10086100 | Minor source | No |
| NOBLE TANK BATTERY #10086400 | Minor source | No |
| NOBLE TANK BATTERY #10088200 | Minor source | No |
| NOBLE TANK BATTERY #10088300 | Minor source | No |
| NOBLE TANK BATTERY #10088700 | Minor source | No |
| NOBLE TANK BATTERY #10089200 | Minor source | No |
| NOBLE TANK BATTERY #10089700 | Minor source | No |
| NOBLE TANK BATTERY #10091300 | Minor source | No |
| NOBLE TANK BATTERY #10091400 | Minor source | No |
| NOBLE TANK BATTERY #10091600 | Minor source | No |
| NOBLE TANK BATTERY #10091900 | Minor source | No |
| NOBLE TANK BATTERY #10092000 | Minor source | No |
| NOBLE TANK BATTERY #10092100 | Minor source | No |
| NOBLE TANK BATTERY #10100400 | Minor source | No |
| NOBLE TANK BATTERY #10100900 | Minor source | No |
| NOBLE TANK BATTERY #10101400 | Minor source | No |
| NOBLE TANK BATTERY #10101500 | Minor source | No |
| NOBLE TANK BATTERY #10101700 | Minor source | No |
| NOBLE TANK BATTERY #10101800 | Minor source | No |
| NOBLE TANK BATTERY #10103800 | Minor source | No |
| NOBLE TANK BATTERY #10104300 | Minor source | No |
| NOBLE TANK BATTERY #10106000 | Minor source | No |
| NOBLE TANK BATTERY #10106100 | Minor source | No |
| NOBLE TANK BATTERY #10108200 | Minor source | No |
| NOBLE TANK BATTERY #10108900 | Minor source | No |
| NOBLE TANK BATTERY #10109200 | Minor source | No |
| NOBLE TANK BATTERY #10109300 | Minor source | No |
| NOBLE TANK BATTERY #10111800 | Minor source | No |
| NOBLE TANK BATTERY #10111900 | Minor source | No |
| NOBLE TANK BATTERY #10112100 | Minor source | No |
| NOBLE TANK BATTERY #10112200 | Minor source | No |
| NOBLE TANK BATTERY #10113800 | Minor source | No |
| NOBLE TANK BATTERY #10114300 | Minor source | No |
| NOBLE TANK BATTERY #10131400 | Minor source | No |
| NOBLE TANK BATTERY #10135300 | Minor source | No |
| NOBLE TANK BATTERY #10136900 | Minor source | No |
| NOBLE TANK BATTERY #10137700 | Minor source | No |
| NOBLE TANK BATTERY #10138000 | Minor source | No |
| NOBLE TANK BATTERY #10138300 | Minor source | No |
| NOBLE TANK BATTERY #10140800 | Minor source | No |
| NOBLE TANK BATTERY #10142200 | Minor source | No |
| NOBLE TANK BATTERY #10144600 | Minor source | No |
| NOBLE TANK BATTERY #10652400 | Minor source | No |
| NOBLE TANK BATTERY #10658400 | Minor source | No |
| NOBLE TANK BATTERY #10659400 | Minor source | No |
| NOBLE TANK BATTERY #10659600 | Minor source | No |
| NOBLE TANK BATTERY #10660000 | Minor source | No |
| NOBLE TANK BATTERY #10778800 | Minor source | No |
| NOBLE TANK BATTERY #10779900 | Minor source | No |
| NOBLE TANK BATTERY #10790200 | Minor source | No |
| NOBLE TANK BATTERY #10791700 | Minor source | No |
| NOBLE TANK BATTERY #10818700 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.