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 - RUPERT 1; 2; 32-9 | Minor source | No |
| PDC - RUSCO 33, 43-23 | Minor source | No |
| PDC - SATER 13, 14, 23, 24-19U, 19BU, GU | Minor source | No |
| PDC - SAUER 33-31D, 43-31 | Minor source | No |
| PDC - SCHWALM-ULLMANN 18-1 | Minor source | No |
| PDC - SEE 123-4502 | Minor source | No |
| PDC - SEE 123-4538 | Minor source | No |
| PDC - SEE 123-4538 | Minor source | No |
| PDC - SEE 123-7011 | Minor source | No |
| PDC - SEELE 31, 41, 42-31 | Minor source | No |
| PDC - SEELE 41, 42-31 | Minor source | No |
| PDC - SHIVERS 1; 41-29 | Minor source | No |
| PDC - SHULTZ 13, 22, 23-30; 30-32/ NYGR. | Minor source | No |
| PDC - SHULTZ 22, 23-30; 30-32/NYGREN 11- | Minor source | No |
| PDC - SIEBRING 33D, 34-29U; 29PU/ W H. | Minor source | No |
| PDC - SIMONSEN 1L-421, 1Q-241 | Minor source | No |
| PDC - SIMONSEN SCHAEFER 7E-203, 403;... | Minor source | No |
| PDC - SITZMAN 1, 23-4 | Minor source | No |
| PDC - SKURICH-ROTHE STATE 31, 41-6 | Minor source | No |
| PDC - SKURICH-ROTHE STATE 33-6 | Minor source | No |
| PDC - SLW RANCH 41, 42-7/ SKURICH 43-7 | Minor source | No |
| PDC - SMITH-REEVES 27-1 | Minor source | No |
| PDC - SPAUR 31V-204, 31V-214, 31V-404... | Minor source | No |
| PDC - STATE 24, 33, 44-4 | Minor source | No |
| PDC - STATE 5519 12-8, 23-8 | Minor source | No |
| PDC - STATE 5519 14-8, 24-8 | Minor source | No |
| PDC - STATE 5519 21-8, 32-8 | Minor source | No |
| PDC - STATE 5519 31, 41, 42-8 | Minor source | No |
| PDC - STATE 5519 8-34, 43; 33-8 & 8A | Minor source | No |
| PDC - STATE 6524 11, 21-28 | Minor source | No |
| PDC - STATE 6524 12, 22-28 | Minor source | No |
| PDC - STATE 6524 13, 14, 23, 24-28 | Minor source | No |
| PDC - STATE 6525 14, 23-32 | Minor source | No |
| PDC - STATE CORSAIR 13, 23-36 | Minor source | No |
| PDC - STATE LEASE 5519 13-8 | Minor source | No |
| PDC - STATE LEASE 6525 33-32 | Minor source | No |
| PDC - STATE LEASE 6525 34-32 | Minor source | No |
| PDC - STATE LEASE 81 11-16 | Minor source | No |
| PDC - STATE LEASE 8461 13-16 | Minor source | No |
| PDC - STATE PETERSON 24-16 | Minor source | No |
| PDC - STATE WELLS 14-4 | Minor source | No |
| PDC - STONEBRAKER 28U-234, 28V-414 | Minor source | No |
| PDC - STONEBRAKER, BRYCE, REIS GS | Minor source | No |
| PDC - STROH 14-2 | Minor source | No |
| PDC - TELARICO 31-33 & 33C/ HOLLISTER.. | Minor source | No |
| PDC - THORNTON 21R-403 | Minor source | No |
| PDC - TRINITY 23-7; JOHNSTON 14-7 | Minor source | No |
| PDC - TWO E RANCH 1-15B | Minor source | No |
| PDC - VILLAGE 11, 22-16DU; 16A, F, K, N- | Minor source | No |
| PDC - VILLAGE 31, 32, 41, 42-16DU, 16SDU | Minor source | No |
| PDC - WAGNER F 11-2P | Minor source | No |
| PDC - WARNER 6-14 | Minor source | No |
| PDC - WASTE MANAGEMENT 12-26A | Minor source | No |
| PDC - WASTE MANAGEMENT 2L-301, 2L-421... | Minor source | No |
| PDC - WELLS RANCH 11, 12, 21, 22-34 | Minor source | No |
| PDC - WELLS RANCH 11, 12, 21, 22-36&26 | Minor source | No |
| PDC - WELLS RANCH 12, 21-3 | Minor source | No |
| PDC - WELLS RANCH 13, 23, 24-33 | Minor source | No |
| PDC - WELLS RANCH 23-11 | Minor source | No |
| PDC - WELLS RANCH 23, 24-22 | Minor source | No |
| PDC - WELLS RANCH 31, 32, 41, 42-2 | Minor source | No |
| PDC - WELLS RANCH 31, 32, 42-34 | Minor source | No |
| PDC - WELLS RANCH 31, 41-5 | Minor source | No |
| PDC - WELLS RANCH 33, 34, 43, 44-15 | Minor source | No |
| PDC - WELLS RANCH 33, 34, 43, 44-34 | Minor source | No |
| PDC - WELLS RANCH 33, 34, 44-10 | Minor source | No |
| PDC - WELLS RANCH 43-10 | Minor source | No |
| PDC - WELLS RANCH STATE 33, 34, 43, 4... | Minor source | No |
| PDC - WHITE 27-8 | Minor source | No |
| PDC - WIEDEMAN 34, 44-21U; 21-2 | Minor source | No |
| PDC - WIEDEMAN TRUST FEDERAL SEC 29 PAD | Synthetic minor source | No |
| PDC - WILLIAMSON 44-12 | Minor source | No |
| PDC - WITWER 34, 44-6D, 43-6/ HOFF 33-6 | Minor source | No |
| PDC - ZIMMERMAN 11D, 12, 21D, 22-17 U... | Minor source | No |
| PDC -BECKER RANCH 5J-203,323R;5M-243,303 | Synthetic minor source | No |
| PDC -BLUFF FED/GREELY-ROTHE FED 16-1 PAD | Synthetic minor source | No |
| PDC ACHZIGER 1; 14-4 | Minor source | No |
| PDC ALLES 23-13 | Minor source | No |
| PDC ALM 31, 41-33 | Minor source | No |
| PDC ALM 32, 42-33 | Minor source | No |
| PDC ANDERSON 1-10 | Minor source | No |
| PDC ANDERSON 2K, 2AD, 2GD; CARLSON 13-2D | Synthetic minor source | No |
| PDC ANDERSON 33, 34-34 | Minor source | No |
| PDC ANDERSON 33, 34, 43-34 | Minor source | No |
| PDC ANNIE 3-9 | Minor source | No |
| PDC ARMSTEAD 1 | Minor source | No |
| PDC ASBURY V 3-11, 14 | Minor source | No |
| PDC B & C FARMS 1, 33-2 | Minor source | No |
| PDC B & H 1 | Minor source | No |
| PDC B&B 10-31 | Minor source | No |
| PDC BAKER 5-41 | Minor source | No |
| PDC BARCLAY 2-9, 10, 15/BOWEN 2-7 | Minor source | No |
| PDC BARRELL 42-4 | Minor source | No |
| PDC BECKER 5-3,12, 12-10I | Minor source | No |
| PDC BECKER 5-4, 5-5, 5-16, 6 | Minor source | No |
| PDC BECKER 5-8, 5-13, 7, 15-9I | Minor source | No |
| PDC BECKER 5-9, 8-12I | Minor source | No |
| PDC BEEBE DRAW 1, 3/ FLIPPIN 25B U | Minor source | No |
| PDC BEEBE DRAW 2, 4 | Minor source | No |
| PDC BENJAMIN 1 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.