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
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 ENERGY INC. BATTERY #10015600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10016100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10016300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10017200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10017300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10019000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10019100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10022200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10022300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10022500 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10024100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10025700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10027400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10027500 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10031100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10031200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10033400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10034000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10035400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10036600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10038300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10038700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10038800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10038900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10039100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10040400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10040600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10040700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10042100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10044300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10044400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10047400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10047700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10048100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10048600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10049000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10049300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10050500 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10050600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10054700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10057200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10057600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10057700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10058600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10058900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10059400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10061300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10061600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10062000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10063900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10064300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10064400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10064800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10065300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10066300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10066800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10067300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10068300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10069600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10074900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10075600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10075800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10077400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10078400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10079400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10079800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10080000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10080200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10081500 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10081800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10083400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10085200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10086000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10087700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10088100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10088900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #100894 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10089600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10090200 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10091800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10098700 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10100100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10103000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10104600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10104800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10104900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10105500 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10105600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10106500 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10106600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10107100 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10107400 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10109600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10109800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10110800 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10111000 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10111600 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10113300 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10113900 | Minor source | No |
| NOBLE ENERGY INC. BATTERY #10117600 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.