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 - SCHMIDT CARLSON MOSIER T4N- | Minor source | No |
| PDC ENERGY - SCHMIDT ELMER T4N-R65W-S30 | Minor source | No |
| PDC ENERGY - SCHMIDT ELMER T4N-R65W-S30 | Minor source | No |
| PDC ENERGY - SCHMIDT ROY A T4N-R66W-S25 | Minor source | No |
| PDC ENERGY - SCHMIDT T4N-R65W-S19 L02 | Minor source | No |
| PDC ENERGY - SCHMUNK 31 | Minor source | No |
| PDC ENERGY - SCHNEIDER 19 SEC HZ | Synthetic minor source | No |
| PDC ENERGY - SCHNEIDER HD PAD | Synthetic minor source | No |
| PDC ENERGY - SCHRUTE 16 SEC HZ | Minor source | No |
| PDC ENERGY - SCHWAB CECIL T4N-R66W-S26 L | Minor source | No |
| PDC ENERGY - SCHWAB T4N-R66W-S26 L03 | Minor source | No |
| PDC ENERGY - SCOTTSDALE T4N-R67W-S26 L02 | Minor source | No |
| PDC ENERGY - SEGAL 24 SEC PAD | Minor source | No |
| PDC ENERGY - SEGAL 4-0-24 | Minor source | No |
| PDC ENERGY - SEGL T5N-R66W-S24 L01 | Minor source | No |
| PDC ENERGY - SEILBACH 1; 11-17 | Minor source | No |
| PDC ENERGY - SEVERIN T6N-R66W-S4 L | Minor source | No |
| PDC ENERGY - SHABLE 7 SEC HZ | Minor source | No |
| PDC ENERGY - SHAFTO T5N-R66W-S27 L01 | Minor source | No |
| PDC ENERGY - SHULTZ 11-31D; 24-30D.. | Minor source | No |
| PDC ENERGY - SHUPE 13-32/MOORE 13-31, 35 | Minor source | No |
| PDC ENERGY - SIEBRING 33D, 34-29U; | Minor source | No |
| PDC ENERGY - SIMONSEN 12E-223, 1I-421, 1 | Minor source | No |
| PDC ENERGY - SIMPSON FD PAD | Synthetic minor source | No |
| PDC ENERGY - SKURICH-ROTHE 6-A | Minor source | No |
| PDC ENERGY - SKURICH-ROTHE STATE 22-6 | Minor source | No |
| PDC ENERGY - SOPHIE 1 | Minor source | No |
| PDC ENERGY - SORIN NATURAL RESOURCES 2M | Synthetic minor source | No |
| PDC ENERGY - SORIN NATURAL RESOURCES 2R | Synthetic minor source | No |
| PDC ENERGY - SPARROW T4N-R66W-S20 L01 | Minor source | No |
| PDC ENERGY - SPAUR 10 SEC PAD 1 & 2 | Synthetic minor source | No |
| PDC ENERGY - SPAUR BROTHERS | Minor source | No |
| PDC ENERGY - SPINNEY | Synthetic minor source | No |
| PDC ENERGY - SRC M&T WELLS | Minor source | No |
| PDC ENERGY - ST T4N-R66W-S36 L02 | Minor source | No |
| PDC ENERGY - ST T4N-R67W-S36 L02 | Minor source | No |
| PDC ENERGY - STATE 22-36 | Minor source | No |
| PDC ENERGY - STATE 81 41-16 | Minor source | No |
| PDC ENERGY - STATE LEASE 5519 22-8 & 8D | Minor source | No |
| PDC ENERGY - STATE LEASE 81 23-16 | Minor source | No |
| PDC ENERGY - STATE PETERSON 33, 34.. | Minor source | No |
| PDC ENERGY - STELLA 22 SEC HZ | Minor source | No |
| PDC ENERGY - STENZEL T5N-R65W-S31 | Minor source | No |
| PDC ENERGY - STILLROVEN FARMS PAD | Synthetic minor source | No |
| PDC ENERGY - STONEBRAKER 28V-234... | Minor source | No |
| PDC ENERGY - STROH #35-1 & #35-2 | Minor source | No |
| PDC ENERGY - STROH 13 SEC PAD 1/2 | Synthetic minor source | No |
| PDC ENERGY - STROH 14-1, 2 | Minor source | No |
| PDC ENERGY - STROH 24-12 | Minor source | No |
| PDC ENERGY - STROH DUTTON PAD | Minor source | No |
| PDC ENERGY - STROH T4N-R67W-S2 L02 | Minor source | No |
| PDC ENERGY - STROH T5N-R67W-S35 L02 | Minor source | No |
| PDC ENERGY - STROMBERGER FED T4N-R66W-S1 | Minor source | No |
| PDC ENERGY - STRONG | Minor source | No |
| PDC ENERGY - STUG BARN GREELEY T5N-R66W- | Minor source | No |
| PDC ENERGY - SULLIVAN 3-1 | Minor source | No |
| PDC ENERGY - SUNLIGHT 8 SEC HZ | Synthetic minor source | No |
| PDC ENERGY - SUNMARKE 28U-334, 434; 28V- | Minor source | No |
| PDC ENERGY - SWANSON 34-20 | Minor source | No |
| PDC ENERGY - SWIFT FACILITY | Minor source | No |
| PDC ENERGY - SYLVESTER 31, F31, 36 G06 | Minor source | No |
| PDC ENERGY - T&M DE PAD | Synthetic minor source | No |
| PDC ENERGY - TAILHOLT FD 11 | Synthetic minor source | No |
| PDC ENERGY - TANNER FED T4N-R66W-S33 L01 | Minor source | No |
| PDC ENERGY - TARIN FEDERAL 32 SEC HZ | Synthetic minor source | No |
| PDC ENERGY - TATMAN 34 PAD | Minor source | No |
| PDC ENERGY - THISTLE DOWN 31 SEC HZ | Synthetic minor source | No |
| PDC ENERGY - THORNTON 11V-404 | Minor source | No |
| PDC ENERGY - THORNTON 15E-432 | Minor source | No |
| PDC ENERGY - THORNTON 15Y-414 | Minor source | No |
| PDC ENERGY - THORNTON 17T-421 | Minor source | No |
| PDC ENERGY - THORNTON 18L-401 | Minor source | No |
| PDC ENERGY - THORNTON 21K-443 | Minor source | No |
| PDC ENERGY - THOUT 22-1, 2 | Minor source | No |
| PDC ENERGY - THUNDER 3 SEC HZ | Synthetic minor source | No |
| PDC ENERGY - TOLMACHOFF 41-33.. | Minor source | No |
| PDC ENERGY - TRIANGLE 6, 18-22 | Minor source | No |
| PDC ENERGY - TRIMAR FARMS 29 SEC PAD 1/2 | Synthetic minor source | No |
| PDC ENERGY - TROUDT 18-27 PAD | Synthetic minor source | No |
| PDC ENERGY - TROY 1 | Minor source | No |
| PDC ENERGY - UHRICH 33, 34, 44-8 | Minor source | No |
| PDC ENERGY - UHRICH 43-8 | Minor source | No |
| PDC ENERGY - UNI UPRC T4N-R66W-S3 L01 | Minor source | No |
| PDC ENERGY - UNION TANK BATTERY | Minor source | No |
| PDC ENERGY - UPRC G07-99HZ | Synthetic minor source | No |
| PDC ENERGY - UPRC NELSON T4N-R66W-S27 L0 | Minor source | No |
| PDC ENERGY - UPRC T5N-R66W-S27 L02 | Minor source | No |
| PDC ENERGY - UPV BENSLER T5N-R66W-S29 L0 | Minor source | No |
| PDC ENERGY - UPV T5N-R66W-S27 L01 | Minor source | No |
| PDC ENERGY - UPV T5N-R66W-S27 L01 | Minor source | No |
| PDC ENERGY - UYEMURA 33, 34-31.. | Minor source | No |
| PDC ENERGY - VAIR 12, 13-18 | Minor source | No |
| PDC ENERGY - VANDERHOFF CLARK T4N-R66W-S | Minor source | No |
| PDC ENERGY - VANDERHOFF CLARK T4N-R66W-S | Minor source | No |
| PDC ENERGY - VANDERHOOF ANDERS T4N-R66W- | Minor source | No |
| PDC ENERGY - VAUGHAN 12-30 | Minor source | No |
| PDC ENERGY - VETTER 26-12, 13 | Minor source | No |
| PDC ENERGY - VETTER T5N-R67W-S35 L01 | Minor source | No |
| PDC ENERGY - VICTOR KLEIN 20-1A | Minor source | No |
| PDC ENERGY - VISTA PAD | Synthetic minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.