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 - SINJIN T6N-R65W-S36 L01 | Minor source | No |
| NOBLE ENERGY - SITZMAN L01 | Minor source | No |
| NOBLE ENERGY - SITZMAN T6N-R64W-S33 L01 | Minor source | No |
| NOBLE ENERGY - SLEDGE T4N-R64W-S9 L01 | Minor source | No |
| NOBLE ENERGY - SLW RNCH B01 ECONODE | Minor source | No |
| NOBLE ENERGY - SLW RNCH B12 ECONODE T5N- | Minor source | No |
| NOBLE ENERGY - SLW STATE PC BB18-65HN | Minor source | No |
| NOBLE ENERGY - SMITH T7N-R64W-S18 L01 | Minor source | No |
| NOBLE ENERGY - SPAYD T4N-R65W-S29 L01 | Minor source | No |
| NOBLE ENERGY - SPIKE DECHANT ST T3N-R65W | Minor source | No |
| NOBLE ENERGY - SPIKE ELISE ST | Minor source | No |
| NOBLE ENERGY - SPIKE ELISE ST | Minor source | No |
| NOBLE ENERGY - SPIKE GUTTERSEN DIGGIN ST | Minor source | No |
| NOBLE ENERGY - SPIKE GUTTERSEN ST L02 | Minor source | No |
| NOBLE ENERGY - SPIKE ST | Minor source | No |
| NOBLE ENERGY - SPIKE ST T4N-R63W-S30 L02 | Minor source | No |
| NOBLE ENERGY - SPOMER #415860860 | Minor source | No |
| NOBLE ENERGY - SPOMER T5N-R66W-S33 L01 | Minor source | No |
| NOBLE ENERGY - SPOMERT5N-R66W-S32 L02 | Minor source | No |
| NOBLE ENERGY - ST BOOTH | Minor source | No |
| NOBLE ENERGY - ST BOOTH T4N-R64W-S36 L01 | Minor source | No |
| NOBLE ENERGY - ST BOOTH T4N-R64W-S36 L01 | Minor source | No |
| NOBLE ENERGY - ST BOOTHG L02 | Minor source | No |
| NOBLE ENERGY - ST T2N-R64W-S16 L01 | Minor source | No |
| NOBLE ENERGY - ST T4N-R64W-S16 L01 | Minor source | No |
| NOBLE ENERGY - ST T4N-R64W-S16 L02 | Minor source | No |
| NOBLE ENERGY - ST T4N-R64W-S16 L04 | Minor source | No |
| NOBLE ENERGY - ST T4N-R64W-S36 L02 | Minor source | No |
| NOBLE ENERGY - ST T6N-R67W-S36 L03 | Minor source | No |
| NOBLE ENERGY - ST T8N-R60W-S16 L01 | Synthetic minor source | No |
| NOBLE ENERGY - STATE TINCUP 13-16 | Minor source | No |
| NOBLE ENERGY - STEIN VICKI SCHMIDT UPRR | Minor source | No |
| NOBLE ENERGY - STEPHENS T5N-R66W-S31 L02 | Minor source | No |
| NOBLE ENERGY - STEPHENSON KREPS T6N-R64W | Minor source | No |
| NOBLE ENERGY - STEVE | Minor source | No |
| NOBLE ENERGY - STEWART HEMPLE T4N-R65W-S | Minor source | No |
| NOBLE ENERGY - STEWART T4N-R64W-S30 L02 | Minor source | No |
| NOBLE ENERGY - STEWART T4N-R64W-S30 L03 | Minor source | No |
| NOBLE ENERGY - STOCKLEY T4N-R64W-S15 L01 | Synthetic minor source | No |
| NOBLE ENERGY - STORER SHOEMAKER T6N-R64W | Minor source | No |
| NOBLE ENERGY - STORIS E24 & MACKINAW A19 | Synthetic minor source | No |
| NOBLE ENERGY - STROH | Synthetic minor source | No |
| NOBLE ENERGY - STROH HELMS RAY | Minor source | No |
| NOBLE ENERGY - STROH JOHNSON T3N-R65W-S1 | Minor source | No |
| NOBLE ENERGY - STROH N35 T4N-R67W-S2 L01 | Minor source | No |
| NOBLE ENERGY - STROH T3N-R65W-S12 L02 | Minor source | No |
| NOBLE ENERGY - STROH T3N-R65W-S12 L03 | Minor source | No |
| NOBLE ENERGY - STROMBERGER FED T4N-R66W- | Minor source | No |
| NOBLE ENERGY - SUN SOIL T4N-R65W-S14 L01 | Minor source | No |
| NOBLE ENERGY - SWINNEY T4N-R65W-S15 L01 | Minor source | No |
| NOBLE ENERGY - SYLVESTER 31-5H5, 6H5 | Minor source | No |
| NOBLE ENERGY - TANIA GUTTERSEN T3N-R64W- | Minor source | No |
| NOBLE ENERGY - TAYLOR USX T6N-R63W-S7 L0 | Minor source | No |
| NOBLE ENERGY - THAYER WILKINSON L01 | Minor source | No |
| NOBLE ENERGY - THISTLE DOWN ST T5N-R65W- | Minor source | No |
| NOBLE ENERGY - THOMPSON | Synthetic minor source | No |
| NOBLE ENERGY - THOMPSON ALOYSIUS T4N-R64 | Minor source | No |
| NOBLE ENERGY - THOMPSON T4N-R64W-S28 L01 | Minor source | No |
| NOBLE ENERGY - THOMPSON T4N-R64W-S28 L02 | Minor source | No |
| NOBLE ENERGY - THORNTON ST T7N-R66W-S16 | Minor source | No |
| NOBLE ENERGY - THOUTT TRAVELERS CRICKET | Minor source | No |
| NOBLE ENERGY - THUNDERHEAD USX T7N-R64W- | Minor source | No |
| NOBLE ENERGY - TIGGES T6N-R66W-S19 L01 | Minor source | No |
| NOBLE ENERGY - TIMBRO FED T9N-R58W-S17 L | Synthetic minor source | No |
| NOBLE ENERGY - TIMBRO FED T9N-R58W-S18 L | Minor source | No |
| NOBLE ENERGY - TIMBRO FED T9N-R58W-S8 L0 | Minor source | No |
| NOBLE ENERGY - TIMBRO FEDERAL LD07-78HN | Minor source | No |
| NOBLE ENERGY - TIMBRO LC13 ECONODE | Minor source | No |
| NOBLE ENERGY - TIMBRO STATE LD16 ECONODE | Minor source | No |
| NOBLE ENERGY - TIMBRO T9N-R58W-S6 L01 | Synthetic minor source | No |
| NOBLE ENERGY - TIMBRO T9N-R59W-S12 L01 | Minor source | No |
| NOBLE ENERGY - TIMBRO T9N-R59W-S13 L01 | Minor source | No |
| NOBLE ENERGY - TIMMERMAN HUNSMN L01 | Minor source | No |
| NOBLE ENERGY - TIMMERMAN PLATTE VALLEY | Synthetic minor source | No |
| NOBLE ENERGY - TIMMERMAN WERTZ T4N-R65W- | Minor source | No |
| NOBLE ENERGY - TODD T4N-R64W-S20 L01 | Minor source | No |
| NOBLE ENERGY - TODD T4N-R65W-S9 L01 | Minor source | No |
| NOBLE ENERGY - TORRES GARCIA USX T7N-R64 | Minor source | No |
| NOBLE ENERGY - TREBOR | Minor source | No |
| NOBLE ENERGY - TREBOR JENKINS LEEROY T5N | Minor source | No |
| NOBLE ENERGY - TREBOR L05 | Minor source | No |
| NOBLE ENERGY - TREBOR L09 | Minor source | No |
| NOBLE ENERGY - TREBOR T5N-R64W-S11 L02 | Minor source | No |
| NOBLE ENERGY - TREBOR T5N-R64W-S11 L04 | Minor source | No |
| NOBLE ENERGY - TREBOR T5N-R64W-S11 L07 | Minor source | No |
| NOBLE ENERGY - TREBOR T5N-R64W-S11 L08 | Minor source | No |
| NOBLE ENERGY - TREBOR T5N-R64W-S12 L02 | Minor source | No |
| NOBLE ENERGY - TREBOR T5N-R64W-S12 L03 | Minor source | No |
| NOBLE ENERGY - TREBOR T5N-R64W-S12 L04 | Minor source | No |
| NOBLE ENERGY - TREBOR T5N-R64W-S14 L02 | Minor source | No |
| NOBLE ENERGY - TREBOR WACKER PETERSON T5 | Minor source | No |
| NOBLE ENERGY - TRINITY USX T6N-R63W-S7 L | Minor source | No |
| NOBLE ENERGY - UHRICH T6N-R65W-S27 L01 | Minor source | No |
| NOBLE ENERGY - ULRICH BOULTER | Minor source | No |
| NOBLE ENERGY - UNI UPR BOOTH L01 | Minor source | No |
| NOBLE ENERGY - UPRC #10064000 | Minor source | No |
| NOBLE ENERGY - UPRC BASEBALL T4N-R66W-S1 | Minor source | No |
| NOBLE ENERGY - UPRC BERNHARDT T5N-R66W-S | Minor source | No |
| NOBLE ENERGY - UPRC CHACON T3N-R65W-S13 | Minor source | No |
| NOBLE ENERGY - UPRC CHWY FERGUSON MONFOR | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.