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 |
|---|---|---|
| PETROLEUM DEV SEVERANCE 1 | Minor source | No |
| PETROLEUM DEV SKURICH-ROTHE STATE 42-6 | Minor source | No |
| PETROLEUM DEV SKURICH/SLW RANCH | Minor source | No |
| PETROLEUM DEV SLW RANCH 41-7 | Minor source | No |
| PETROLEUM DEV SOLIS 44-17 | Minor source | No |
| PETROLEUM DEV STATE 22-4 | Minor source | No |
| PETROLEUM DEV STATE 5519 31-8, 41-8 | Minor source | No |
| PETROLEUM DEV STATE 5519 8-34, 8-43 | Minor source | No |
| PETROLEUM DEV STATE 5519 8-A, 44-8 | Minor source | No |
| PETROLEUM DEV STATE 6524 13-28, 24-28 | Minor source | No |
| PETROLEUM DEV STATE 6525 21-32, 31-32 | Minor source | No |
| PETROLEUM DEV STATE 81 41-16, STATE 16-C | Minor source | No |
| PETROLEUM DEV STATE LEASE 5519 8-D | Minor source | No |
| PETROLEUM DEV STATE LEASE 6525 43-32 | Minor source | No |
| PETROLEUM DEV STATE LEASE 81 23-16 | Minor source | No |
| PETROLEUM DEV STATE LEASE 81 42-16 | Minor source | No |
| PETROLEUM DEV STATE LEASE 8461 32-16 | Minor source | No |
| PETROLEUM DEV STATE PETERSON 12-16 21-16 | Minor source | No |
| PETROLEUM DEV STATE PETERSON 22-16 | Minor source | No |
| PETROLEUM DEV STATE PETERSON 43-16 | Minor source | No |
| PETROLEUM DEV STATE WELLS 32D | Minor source | No |
| PETROLEUM DEV STEPHENS-FOE 10-1 | Minor source | No |
| PETROLEUM DEV STEPHENS-FOE 10-2 | Minor source | No |
| PETROLEUM DEV STEPHENS-FOE 10-3 | Minor source | No |
| PETROLEUM DEV TRINITY 33-7, 43-7 | Minor source | No |
| PETROLEUM DEV TWO E RANCH 1-21C | Minor source | No |
| PETROLEUM DEV UHRICH 13-29 | Minor source | No |
| PETROLEUM DEV UHRICH 33-8 | Minor source | No |
| PETROLEUM DEV WACKER 10-D | Minor source | No |
| PETROLEUM DEV WACKER 2 | Minor source | No |
| PETROLEUM DEV WACKER 32-10 | Minor source | No |
| PETROLEUM DEV WACKER 42-10 | Minor source | No |
| PETROLEUM DEV WASTE SERVICES 21-35 | Minor source | No |
| PETROLEUM DEV WEBSTER 31-11 | Minor source | No |
| PETROLEUM DEV WELLS RANCH 10-C, 42-10 | Minor source | No |
| PETROLEUM DEV WELLS RANCH 13-11 | Minor source | No |
| PETROLEUM DEV WELLS RANCH 13-27, 24-27 | Minor source | No |
| PETROLEUM DEV WELLS RANCH 14-35 | Minor source | No |
| PETROLEUM DEV WELLS RANCH 21-34, 22-34 | Minor source | No |
| PETROLEUM DEV WELLS RANCH 31 32-36 & 36C | Minor source | No |
| PETROLEUM DEV WELLS RANCH 32-3 | Minor source | No |
| PETROLEUM DEV WELLS RANCH 33-14 34-14... | Minor source | No |
| PETROLEUM DEV WELLS RANCH 34-10 | Minor source | No |
| PETROLEUM DEV WELLS RANCH 41-5 | Minor source | No |
| PETROLEUM DEV WELLS TRUST 24-21 | Minor source | No |
| PETROLEUM DEV WIEDEMAN 11, 12-21U FACIL | Minor source | No |
| PETROLEUM DEV WILLIAMSON 43-12 | Minor source | No |
| PETROLEUM DEV ZIMMERMAN 23-17 | Minor source | No |
| PETROLEUM DEV- TWO E RANCH 1-21 | Minor source | No |
| PETROLEUM DEV- WELLS RANCH 21-36, 22-36 | Minor source | No |
| PETROLEUM DEV- WELLS RANCH 41-36, 42-36 | Minor source | No |
| PETROLEUM DEV-SKURICH-ROTHE STATE 34-6 | Minor source | No |
| PETROLEUM DEV. - DUNN 13-7 | Minor source | No |
| PETROLEUM DEV. - RUFF 21-3 | Minor source | No |
| PETROLEUM DEV. - WELLS RANCH 14-11 | Minor source | No |
| PETROLEUM DEVEL- STATE LEASE 8461 14-16 | Minor source | No |
| PETROLEUM DEVELOPMENT - ALM 32-33 | Minor source | No |
| PETROLEUM DEVELOPMENT - ANDERSON 1-10 | Minor source | No |
| PETROLEUM DEVELOPMENT - BOOTH 12-35, 22- | Minor source | No |
| PETROLEUM DEVELOPMENT - DYER 14-5 | Minor source | No |
| PETROLEUM DEVELOPMENT - FABRIZIUS 41-1 | Minor source | No |
| PETROLEUM DEVELOPMENT - FRANCEN 24-8 | Minor source | No |
| PETROLEUM DEVELOPMENT - GADDIS 41-36 | Minor source | No |
| PETROLEUM DEVELOPMENT - HOFF 33-6 | Minor source | No |
| PETROLEUM DEVELOPMENT - J&L FARMS 43-29 | Minor source | No |
| PETROLEUM DEVELOPMENT - JOHNSON 14-7 | Minor source | No |
| PETROLEUM DEVELOPMENT - MCCARTY 28-8 | Minor source | No |
| PETROLEUM DEVELOPMENT - MEYER 31-7 | Minor source | No |
| PETROLEUM DEVELOPMENT - MILLER 1 | Minor source | No |
| PETROLEUM DEVELOPMENT - NOFFSINGER 31-5 | Minor source | No |
| PETROLEUM DEVELOPMENT - WEBSTER 32-11 | Minor source | No |
| PETROLEUM DEVELOPMENT - WELLS RANCH 21-2 | Minor source | No |
| PETROLEUM DEVELOPMENT - WELLS RANCH 24-2 | Minor source | No |
| PETROLEUM DEVELOPMENT -STATE WELLS 14-4 | Minor source | No |
| PETROLEUM DEVELOPMENT CORP. | Minor source | No |
| PETROLEUM DEVELOPMENT CORP. | Minor source | No |
| PETROLEUM DEVELOPMENT- BOOTH 11-25 | Minor source | No |
| PETROLEUM DEVELOPMENT- EHRLICH 2 | Minor source | No |
| PETROLEUM DEVELOPMENT- FRUDDEN 1 | Minor source | No |
| PETROLEUM DEVELOPMENT- HOFFNER 1 | Minor source | No |
| PETROLEUM DEVELOPMENT- NOFFSINGER 1 | Minor source | No |
| PETROLEUM DEVELOPMENT- O'GRADY 2 | Minor source | No |
| PETROLEUM DEVELOPMENT- WELLS RANCH 13-14 | Minor source | No |
| PETROLEUM DEVELOPMENT- WELLS RANCH 34-15 | Minor source | No |
| PETROLEUM DEVELOPMENT-BRIGHT 1 | Minor source | No |
| PETROLEUM DEVELOPMENT-CARACCIOLI 1 | Minor source | No |
| PETROLEUM DEVELOPMENT-DUNN-MILLER 23-17 | Minor source | No |
| PETROLEUM MANAGEMENT LLC | Minor source | No |
| PHD CONTRACTORS INC | Synthetic minor source | No |
| PHILLIPS 66 PIPELINE - WHITE CLIFF PUMP | Minor source | No |
| PINE BLUFFS GRAVEL & EXCVTG - HARMS PIT | Minor source | No |
| PIONEER PRESS OF GREELEY | Minor source | No |
| PITTS STOP | Minor source | No |
| PLAINS MARKETING - SP B TANK# 025056 & 7 | Minor source | No |
| PLAINS MARKETING - TAMPA CRUDE OIL | Synthetic minor source | No |
| PLATTE RIVER BIOGAS - 19179 CR 49 | Synthetic minor source | No |
| PLATTE RIVER MIDSTREAM-LUCERNE WEST STAT | Synthetic minor source | No |
| POCO HOLDCO - FREEDOM 33 | Synthetic minor source | No |
| POCO HOLDCO - JUDY 34 | Minor source | No |
| POCO HOLDCO - LONG 22-B | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.