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 |
|---|---|---|
| PDC ENERGY - VOLT 5 SEC HZ | Minor source | No |
| PDC ENERGY - VONFELDT | Minor source | No |
| PDC ENERGY - WACKER 1; WACKER 10 | Synthetic minor source | No |
| PDC ENERGY - WACKER 41 - 10 | Minor source | No |
| PDC ENERGY - WADDLE T4N-R66W-S30 L01 | Minor source | No |
| PDC ENERGY - WARD 20 SEC HZ | Synthetic minor source | No |
| PDC ENERGY - WASTE MGMT 2Q-201, 321 | Minor source | No |
| PDC ENERGY - WATERMELON 16 SEC HZ | Minor source | No |
| PDC ENERGY - WAYNE 22 SEC HZ | Minor source | No |
| PDC ENERGY - WEBER T4N-R66W-S16 L01 | Minor source | No |
| PDC ENERGY - WEBSTER 32, 41, 42-11 | Minor source | No |
| PDC ENERGY - WEISS T4N-R67W-S34 L01 | Minor source | No |
| PDC ENERGY - WELCH 1; B 28 -11 | Minor source | No |
| PDC ENERGY - WELD 152 PAD | Minor source | No |
| PDC ENERGY - WELLS RANCH 13, 23, 24-2 | Minor source | No |
| PDC ENERGY - WELLS RANCH 14-14H | Minor source | No |
| PDC ENERGY - WELLS RANCH 33, 34, 43-34 | Minor source | No |
| PDC ENERGY - WELLS RANCH 34F-202... | Minor source | No |
| PDC ENERGY - WELLS RANCH 43-34H | Minor source | No |
| PDC ENERGY - WELLS RANCH 44-12 & 12D | Synthetic minor source | No |
| PDC ENERGY - WERNING 3 SEC PAD | Minor source | No |
| PDC ENERGY - WERNING T4N-R66W-S2 L02 | Minor source | No |
| PDC ENERGY - WET CO FARM UPRR T4N-R66W-S | Minor source | No |
| PDC ENERGY - WETCO PM T4N-R66W-S3 L01 | Minor source | No |
| PDC ENERGY - WHITE 27-2, 27-6 | Minor source | No |
| PDC ENERGY - WIEDEMAN 1 | Minor source | No |
| PDC ENERGY - WIEDEMAN 28 PAD | Synthetic minor source | No |
| PDC ENERGY - WIEDEMAN FEDERAL 22 SEC HZ | Synthetic minor source | No |
| PDC ENERGY - WIEDEMAN/BOOMERANG PAD | Synthetic minor source | Yes |
| PDC ENERGY - WIEST J28-65-1HN | Minor source | Yes |
| PDC ENERGY - WILLIAMS 28-1, 2/ HEL | Minor source | No |
| PDC ENERGY - WILLIAMS MCWILLIAMS T4N-R66 | Minor source | No |
| PDC ENERGY - WILLIAMS PAD | Synthetic minor source | No |
| PDC ENERGY - WILLMAN 42-16 | Minor source | No |
| PDC ENERGY - WILMOTH 5 SEC HZ | Synthetic minor source | No |
| PDC ENERGY - WILSON 11, 12, 21, 22-30 | Minor source | No |
| PDC ENERGY - WILSON 13, 14, 23, 24-30 | Minor source | No |
| PDC ENERGY - WILSON 14-34H | Minor source | No |
| PDC ENERGY - WILSON 24-30H | Minor source | No |
| PDC ENERGY - WILSON 3, 4-26 | Minor source | No |
| PDC ENERGY - WILSON IC PAD | Synthetic minor source | No |
| PDC ENERGY - WIND PAD | Synthetic minor source | No |
| PDC ENERGY - WINDOM CHOPPER | Minor source | No |
| PDC ENERGY - WINTER 12-16 | Minor source | No |
| PDC ENERGY - WOLFSON #26-10 | Minor source | No |
| PDC ENERGY - WONENBERY 1 & B 33-3 | Minor source | No |
| PDC ENERGY - ZION PM WIEST T5N-R66W-S28 | Minor source | No |
| PDC ENERGY -NOCO ENERGIE 3,4,6,12,25-3 | Minor source | No |
| PDC ENERGY -TANNER K33-14 & FED K33-65HN | Minor source | Yes |
| PDC ENERGY INC - CALIFORNIA 14 SEC HZ | Minor source | No |
| PDC ENERGY INC.- MILNE 20, 23, 33, 34-18 | Minor source | No |
| PDC ENERGY- FRANK KNAUB BETZ PHEA | Minor source | No |
| PDC ENERGY-GUTTERSEN 31Q-221, 401; 31T-3 | Minor source | No |
| PDC ENERGY-GUTTERSEN 31T-221, 401; 31Y | Minor source | No |
| PDC ENERGY-GUTTERSEN 6M-303, 423;6R-243 | Minor source | No |
| PDC ENERGY-GUTTERSEN 6R-323, 6U-203, 443 | Minor source | No |
| PDC ENERGY, INC - BARRELL 41-4 | Minor source | No |
| PDC ENERGY, INC - BERNHARDT 4-18 PAD | Minor source | No |
| PDC ENERGY, INC - BOOTH 43, 44-35 | Minor source | No |
| PDC ENERGY, INC - BOSTRON; STROHAUER | Minor source | No |
| PDC ENERGY, INC - LAWERENCE 33 SEC HZ | Minor source | No |
| PDC ENERGY, INC - MEDSKER-OVERTON #1 | Minor source | No |
| PDC ENERGY, INC - TRACY 31-23H, 23M-203 | Minor source | No |
| PDC ENERGY, INC. - BETH 1 / CAESAR 3-11 | Minor source | No |
| PDC ENERGY, INC. - BROE FD | Minor source | No |
| PDC ENERGY, INC. - BRUCE 1 | Minor source | No |
| PDC ENERGY, INC. - CRAWFORD 33 SEC HZ | Minor source | No |
| PDC ENERGY, INC. - GOLDEN EAGLE HZ | Synthetic minor source | No |
| PDC ENERGY, INC. - HAROLD 6 SEC HZ | Synthetic minor source | No |
| PDC ENERGY, INC. - HARVEY 32 SEC HZ | Minor source | No |
| PDC ENERGY, INC. - JAGGED 8 SEC HZ | Synthetic minor source | No |
| PDC ENERGY, INC. - JUDY 6 SEC HZ | Synthetic minor source | No |
| PDC ENERGY, INC. - LINDSEY 1 SEC HZ | Minor source | No |
| PDC ENERGY, INC. - LORY 33 SEC HZ | Minor source | No |
| PDC ENERGY, INC. - PYRAMID 36 SEC HZ | Minor source | No |
| PDC ENERGY, INC. - RED CLOUD 1 SEC HZ | Minor source | No |
| PDC ENERGY, INC. - SANFORD 21-29 PAD | Minor source | No |
| PDC ENERGY, INC. - STILLE 12-6H | Minor source | No |
| PDC ENERGY, INC. - STOUT 18 SEC HZ | Synthetic minor source | No |
| PDC ENERGY, INC. - TATEYAMA 15U-434 | Minor source | No |
| PDC ENERGY, INC. - THORNTON 14K-441 | Minor source | No |
| PDC ENERGY, INC. - WARNER USX N 09-23 | Minor source | No |
| PDC EVANS STROH 20-1/RYLAND 33, 34, 4... | Synthetic minor source | No |
| PDC EVERT 5; 20-2; IVAN KLEIN 20-2 | Minor source | No |
| PDC FERGUSON 17-31 | Minor source | No |
| PDC FHA 10, 15-1 | Minor source | No |
| PDC FICKEL 41-21 | Minor source | No |
| PDC FLACK 1; 5 / MILLAGE 12-3; 1 | Minor source | No |
| PDC FOE 34-20 | Minor source | No |
| PDC FRICK 32-18 | Minor source | No |
| PDC FRY 5; 21-18; 6I; 22-18 | Minor source | No |
| PDC GADDIS 11, 21-36 | Minor source | No |
| PDC GADDIS 32, 42-36 | Minor source | No |
| PDC GATEWOOD 3, 6-1 | Minor source | No |
| PDC GATEWOOD 4-1; 5 | Minor source | No |
| PDC GRADY DYER 14, 23-5/ DYER 13-5 | Minor source | No |
| PDC GRANT BROTHERS 1 | Minor source | No |
| PDC GREEN 32-24 | Minor source | No |
| PDC GUTTERSEN 11, 22-25 & 25E, 25O, 25KD | Synthetic minor source | No |
| PDC GUTTERSEN 12, 21, 22-13/ LF 13-4 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.