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 - RADY T6N-R64W-S12 L01 | Minor source | No |
| NOBLE ENERGY - RAY GLO T6N-R64W-S14 L01 | Minor source | No |
| NOBLE ENERGY - RAYGLO A15-67-1HN | Minor source | No |
| NOBLE ENERGY - REED ATREYU FANNY | Minor source | No |
| NOBLE ENERGY - REI FED BEEBE DRAW OVIATT | Synthetic minor source | No |
| NOBLE ENERGY - REICHERT RED T4N-R65W-S9 | Minor source | No |
| NOBLE ENERGY - REICHERT T4N-R65W-S9 L01 | Minor source | No |
| NOBLE ENERGY - REINICK T4N-R64W-S10 L01 | Minor source | No |
| NOBLE ENERGY - REINICK T4N-R64W-S9 L03 | Minor source | No |
| NOBLE ENERGY - RELIANCE | Synthetic minor source | No |
| NOBLE ENERGY - REXFORD BACHUS L01 | Minor source | No |
| NOBLE ENERGY - RICHARDSON BARTON | Minor source | No |
| NOBLE ENERGY - RICHARDSON BARTON T4N-R64 | Minor source | No |
| NOBLE ENERGY - RICHTER USX T7N-R64W-S27 | Minor source | No |
| NOBLE ENERGY - RICHTER USX T7N-R64W-S27 | Minor source | No |
| NOBLE ENERGY - RITCHEY L04 | Minor source | No |
| NOBLE ENERGY - RITCHEY T3N-R65W-S27 L01 | Minor source | No |
| NOBLE ENERGY - RITCHEY T3N-R65W-S27 L03 | Synthetic minor source | No |
| NOBLE ENERGY - ROHN PC LD09-01 | Minor source | No |
| NOBLE ENERGY - ROHN ST T9N-R58W-S4 L01 | Minor source | No |
| NOBLE ENERGY - ROHN STATE LD09 ECONODE | Minor source | No |
| NOBLE ENERGY - ROHN STATE LD4 ECONODE | Synthetic minor source | No |
| NOBLE ENERGY - ROHN T9N-R58W-S4 L01 | Minor source | No |
| NOBLE ENERGY - ROHN T9N-R58W-S9 L01 | Minor source | No |
| NOBLE ENERGY - ROHN T9N-R58W-S9 L02 | Minor source | No |
| NOBLE ENERGY - ROHN T9N-R60W-S21 L01 | Minor source | No |
| NOBLE ENERGY - ROHR HANNAH T6N-R64W-S28 | Minor source | No |
| NOBLE ENERGY - ROHR T4N-R64W-S15 L01 | Minor source | No |
| NOBLE ENERGY - ROMERO ANGELINA T4N-R65W- | Minor source | No |
| NOBLE ENERGY - ROMERO T5N-R65W S34 L02 | Minor source | No |
| NOBLE ENERGY - ROOT T4N-R65W-S18 L01 | Minor source | No |
| NOBLE ENERGY - ROOT TRUST T4N-R65W-S18 L | Minor source | No |
| NOBLE ENERGY - ROTH T6N-R64W-S30 L04 | Minor source | No |
| NOBLE ENERGY - ROTHE TOBY BOBCAT PANTHER | Synthetic minor source | No |
| NOBLE ENERGY - ROUSE USX T6N-R64W-S5 L01 | Minor source | No |
| NOBLE ENERGY - ROUSE USX T6N-R64W-S5 L02 | Minor source | No |
| NOBLE ENERGY - RUBIX JOHNSON QC T6N-R67W | Minor source | No |
| NOBLE ENERGY - RUFF BENNER T4N-R64W-S8 L | Minor source | No |
| NOBLE ENERGY - RUMSEY T4N-R66W-S4 L01 | Minor source | No |
| NOBLE ENERGY - RUPERT T4N-R65W-S23 L01 | Minor source | No |
| NOBLE ENERGY - RUPERT T4N-R65W-S25 L01 | Minor source | No |
| NOBLE ENERGY - RURAL L01 | Minor source | No |
| NOBLE ENERGY - RURAL UPRR PAN AM BREST G | Minor source | No |
| NOBLE ENERGY - RYANN ST T4N-R64W-S16 L02 | Minor source | No |
| NOBLE ENERGY - RYANN ST T4N-R64W-S16 L03 | Minor source | No |
| NOBLE ENERGY - SANDAU BARTLES T4N-R66W-S | Minor source | No |
| NOBLE ENERGY - SANDAU L01 | Minor source | No |
| NOBLE ENERGY - SANDAU T4N-R66W-S21 L01 | Minor source | No |
| NOBLE ENERGY - SARCHET L01 | Minor source | No |
| NOBLE ENERGY - SATER T4N-R63W-S19 L01 | Minor source | No |
| NOBLE ENERGY - SATER T4N-R64W-S23 L01 | Minor source | No |
| NOBLE ENERGY - SATER USX T4N-R63W-S19L01 | Minor source | No |
| NOBLE ENERGY - SAUER F33 ECONODE | Minor source | No |
| NOBLE ENERGY - SAUER T5N-R65W-S33 L02 | Minor source | No |
| NOBLE ENERGY - SAUER T5N-R65W-S33 L03 | Minor source | No |
| NOBLE ENERGY - SCHAFER KISSLER L01 | Minor source | No |
| NOBLE ENERGY - SCHISLLER L01 | Minor source | No |
| NOBLE ENERGY - SCHISSLER T4N-R65W-S4 L02 | Minor source | No |
| NOBLE ENERGY - SCHMIDT L03 | Minor source | No |
| NOBLE ENERGY - SCHMIDT ST T5N-R65W-S36 L | Minor source | No |
| NOBLE ENERGY - SCHMIDT T4N-R65W-S19 L04 | Minor source | No |
| NOBLE ENERGY - SCHMIDT T4N-R65W-S30 L02 | Minor source | No |
| NOBLE ENERGY - SCHMIDT T4N-R65W-S30 L04 | Minor source | No |
| NOBLE ENERGY - SCHMIDT T4N-R66W-S25 L01 | Minor source | No |
| NOBLE ENERGY - SCHMIDT T4N-R66W-S25 L02 | Minor source | No |
| NOBLE ENERGY - SCHMIDT T4N-R66W-S25 L03 | Minor source | No |
| NOBLE ENERGY - SCHMIER T4N-R65W-S19 L02 | Minor source | No |
| NOBLE ENERGY - SCHMIER THOR T5N-R64W-S32 | Minor source | No |
| NOBLE ENERGY - SCHOLFIELD ST L01 | Synthetic minor source | No |
| NOBLE ENERGY - SCHWAB T4N-R66W-S26 L02 | Minor source | No |
| NOBLE ENERGY - SCHWISOW PALSER #11356700 | Minor source | No |
| NOBLE ENERGY - SCOOTER L02 | Minor source | No |
| NOBLE ENERGY - SCOOTER T3N-R64W-S18 L01 | Synthetic minor source | No |
| NOBLE ENERGY - SEMMEN USX UPRR SLOAN L01 | Minor source | No |
| NOBLE ENERGY - SEYLER B10, B15 ECONODE | Minor source | No |
| NOBLE ENERGY - SEYLER T5N-R64W-S14 L02 | Minor source | No |
| NOBLE ENERGY - SEYMOUR MENDELL L01 | Minor source | No |
| NOBLE ENERGY - SH FARMS SANDY HILLS PLUS | Minor source | No |
| NOBLE ENERGY - SHABLE DOUGHERY CHARLTON | Minor source | No |
| NOBLE ENERGY - SHABLE FED T9N-R60W-S33 L | Minor source | No |
| NOBLE ENERGY - SHABLE T7N-R64W-S14 L01 | Minor source | No |
| NOBLE ENERGY - SHABLE T7N-R64W-S14 L01 | Minor source | No |
| NOBLE ENERGY - SHABLE T8N-R60W-S5 L01 | Synthetic minor source | No |
| NOBLE ENERGY - SHABLE T9N-R58W-S21 L01 | Minor source | No |
| NOBLE ENERGY - SHABLE USX | Synthetic minor source | No |
| NOBLE ENERGY - SHABLE USX T7N-R64W-S11 L | Synthetic minor source | No |
| NOBLE ENERGY - SHABLE USX T7N-R64W-S11 L | Minor source | No |
| NOBLE ENERGY - SHABLE USX T7N-R64W-S11 L | Minor source | No |
| NOBLE ENERGY - SHADOW AA30 ECONODE L01 | Minor source | No |
| NOBLE ENERGY - SHARKEY T6N-R64W-S35 L02 | Minor source | No |
| NOBLE ENERGY - SHELTON ARENS T4N-R65W-S2 | Minor source | No |
| NOBLE ENERGY - SHELTON T3N-R65W-S2 L01 | Minor source | No |
| NOBLE ENERGY - SHELTON T4N-R65W-S24 L01 | Minor source | No |
| NOBLE ENERGY - SHELTON T4N-R65W-S26 L02 | Minor source | No |
| NOBLE ENERGY - SHELTON T4N-R65W-S26 L03 | Minor source | No |
| NOBLE ENERGY - SHELTON UPRR PAN AM L01 | Minor source | No |
| NOBLE ENERGY - SHOEMAKER T6N-R64W-S12 L0 | Minor source | No |
| NOBLE ENERGY - SHUFLY STATE Y34-16-A | Synthetic minor source | No |
| NOBLE ENERGY - SIEVERS T8N-R61W-S17 L01 | Minor source | No |
| NOBLE ENERGY - SINGER T6N-R65W-S34 L01 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.