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 - CUMMINS DILLARD JEANIE | Synthetic minor source | No |
| NOBLE ENERGY - CUMMINS INJECTION FACIL. | Minor source | No |
| NOBLE ENERGY - CUTTHROAT,BROOK,RAINBOW | Synthetic minor source | No |
| NOBLE ENERGY - DABNEY SHELTON T4N-R65W-S | Minor source | No |
| NOBLE ENERGY - DANIELS T4N-R66W-S5 L04 | Minor source | No |
| NOBLE ENERGY - DARLING SIAN SWANSON T6N- | Minor source | No |
| NOBLE ENERGY - DECHANT MOSER L01 | Minor source | No |
| NOBLE ENERGY - DECHANT OZBUN T2N-R64W-S1 | Minor source | No |
| NOBLE ENERGY - DECHANT ST T3N-R65W-S36 L | Minor source | No |
| NOBLE ENERGY - DECHANT T2N-R64W-S19 L01 | Synthetic minor source | No |
| NOBLE ENERGY - DECHANT T2N-R65W-S1 L01 | Synthetic minor source | No |
| NOBLE ENERGY - DECHANT T3N-R64W-S7 L01 | Minor source | No |
| NOBLE ENERGY - DECHANT T3N-R64W-S7 L04 | Minor source | No |
| NOBLE ENERGY - DECHANT USX T2N-R65W-S1 L | Minor source | No |
| NOBLE ENERGY - DECKER KRIEG SCHMID | Minor source | No |
| NOBLE ENERGY - DEGENHART ST USX T6N-R62W | Minor source | No |
| NOBLE ENERGY - DEJONG T5N-R65W-S24 L01 | Minor source | No |
| NOBLE ENERGY - DESHAZO HETTINGER NEUMANN | Synthetic minor source | No |
| NOBLE ENERGY - DF RANCH 3-41, 3-43 | Minor source | No |
| NOBLE ENERGY - DIETRICH T4N-R64W-S7 L01 | Minor source | No |
| NOBLE ENERGY - DILLARD T6N-R64W-S4 L01 | Minor source | No |
| NOBLE ENERGY - DILLARD T7N-R64W-S 10 L03 | Minor source | No |
| NOBLE ENERGY - DILLARD T7N-R64W-S10 L01 | Synthetic minor source | No |
| NOBLE ENERGY - DILLARD T7N-R64W-S10 L04 | Minor source | No |
| NOBLE ENERGY - DILLARD T7N-R64W-S10 L05 | Minor source | No |
| NOBLE ENERGY - DILLARD T7N-R64W-S4 L02 | Minor source | No |
| NOBLE ENERGY - DILLARD T8N-R64W-S34 L01 | Minor source | No |
| NOBLE ENERGY - DILLARD USX T7N R64W S5 | Minor source | No |
| NOBLE ENERGY - DILLARD USX T7N-R64W-S29 | Minor source | No |
| NOBLE ENERGY - DILLARD USX T7N-R64W-S3 L | Minor source | No |
| NOBLE ENERGY - DILLARD USX T7N-R64W-S3 L | Minor source | No |
| NOBLE ENERGY - DILLARD USX T7N-R64W-S9 L | Minor source | No |
| NOBLE ENERGY - DILLER SCHAFER T3N-R65W-S | Minor source | No |
| NOBLE ENERGY - DINGES EGGE T6N-R64W-S3 | Minor source | No |
| NOBLE ENERGY - DINNEL T4N-R64W-S26 L01 | Minor source | No |
| NOBLE ENERGY - DINNEL T4N-R64W-S26 L02 | Minor source | No |
| NOBLE ENERGY - DINNEL T4N-R64W-S26 L03 | Minor source | No |
| NOBLE ENERGY - DINNER L01 | Minor source | No |
| NOBLE ENERGY - DINNER T6N-R65W-S14 L01 | Minor source | No |
| NOBLE ENERGY - DL PHILLIPS T5N-R67W-S24 | Minor source | No |
| NOBLE ENERGY - DOLL T5N-R65W-S23 L01 | Minor source | No |
| NOBLE ENERGY - DOROUGH T4N-R65W-S7 L01 | Minor source | No |
| NOBLE ENERGY - DOS RIOS T5N-R66W-S34 L02 | Minor source | No |
| NOBLE ENERGY - DOVE DURYEA SARCHET L01 | Minor source | No |
| NOBLE ENERGY - DP124 | Minor source | No |
| NOBLE ENERGY - DP133-136 A07-08 ECO | Minor source | No |
| NOBLE ENERGY - DP137 AB28-13 T7N-R64W-S2 | Minor source | No |
| NOBLE ENERGY - DP139-140 A12-07 T6N-R64W | Minor source | No |
| NOBLE ENERGY - DP438-441, 402-403 ECO BO | Minor source | No |
| NOBLE ENERGY - DP442-445 CC29-11 ECO CC2 | Minor source | No |
| NOBLE ENERGY - DP804-806 824-825 830 ECO | Minor source | No |
| NOBLE ENERGY - DUPPER ARENS T4N-R65W-S26 | Minor source | No |
| NOBLE ENERGY - DYER USX T6N-R64W-S3 L01 | Minor source | No |
| NOBLE ENERGY - DYER USX T7N-R64W-S34 L01 | Minor source | No |
| NOBLE ENERGY - EAGLE RELIANCE SENECA TAH | Synthetic minor source | No |
| NOBLE ENERGY - ECKAS MILLAGE T4N-R64W-S1 | Minor source | No |
| NOBLE ENERGY - EHLRCH ST T5N-R65W-S36L01 | Minor source | No |
| NOBLE ENERGY - EHRLICH T4N-R67W-S13 L01 | Minor source | No |
| NOBLE ENERGY - EHRLICH T4N-R67W-S23 L02 | Minor source | No |
| NOBLE ENERGY - EIFERT VANNOY T6N-R65W-S1 | Minor source | No |
| NOBLE ENERGY - EMC ST BERNHARDT L01 | Minor source | No |
| NOBLE ENERGY - EMMY STATE H25-14-A | Minor source | No |
| NOBLE ENERGY - ERICKSON | Minor source | No |
| NOBLE ENERGY - ERICKSON T6N-R64W-S4 L02 | Minor source | No |
| NOBLE ENERGY - FAIRMEADOWS 1-30 & 3-30 | Minor source | No |
| NOBLE ENERGY - FANNY LOWER LATHAM ATREYU | Minor source | No |
| NOBLE ENERGY - FARAMIR FARMS T3N-R64W-S6 | Minor source | No |
| NOBLE ENERGY - FAULKNER USX T7N-R64W-S29 | Minor source | No |
| NOBLE ENERGY - FAULKNER USX T7N-R64W-S29 | Minor source | No |
| NOBLE ENERGY - FED L01 | Minor source | No |
| NOBLE ENERGY - FED T8N-R59W-S13 L01 | Minor source | No |
| NOBLE ENERGY - FED T8N-R59W-S8 L01 | Minor source | No |
| NOBLE ENERGY - FED T8N-R60W-S24 L01 | Minor source | No |
| NOBLE ENERGY - FEIT MARLEY L01 | Minor source | No |
| NOBLE ENERGY - FEUERSTEIN T6N-R66W-S28 L | Minor source | No |
| NOBLE ENERGY - FIRESTIEN T6N-R66W-S30 L0 | Minor source | No |
| NOBLE ENERGY - FISCHER BOTT L01 | Minor source | No |
| NOBLE ENERGY - FISCUS FEDERAL LD 15 & CA | Synthetic minor source | No |
| NOBLE ENERGY - FISCUS FEDERAL LD23-78HN | Minor source | No |
| NOBLE ENERGY - FISCUS T9N-R58W-S22 L01 | Minor source | No |
| NOBLE ENERGY - FIVE M T6N-R65W-S28 L01 | Synthetic minor source | No |
| NOBLE ENERGY - FIVE M T6N-R65W-S28 L02 | Minor source | No |
| NOBLE ENERGY - FIVE RIVERS | Minor source | No |
| NOBLE ENERGY - FIVE RIVERS MONFORT | Minor source | No |
| NOBLE ENERGY - FLACK T5N-R66W-S33 L01 | Minor source | No |
| NOBLE ENERGY - FLOS T6N-R65W-S34 L01 | Minor source | No |
| NOBLE ENERGY - FOEMEYER FOE | Minor source | No |
| NOBLE ENERGY - FOOS T4N-R64W-S11 L01 | Minor source | No |
| NOBLE ENERGY - FOOS T4N-R64W-S11 L02 | Minor source | No |
| NOBLE ENERGY - FOOSE T6N-R64W-S18 L01 | Minor source | No |
| NOBLE ENERGY - FOOSE T6N-R64W-S18 L02 | Minor source | No |
| NOBLE ENERGY - FOSS | Minor source | No |
| NOBLE ENERGY - FOY STARKE T2N-R64W-S20 L | Minor source | No |
| NOBLE ENERGY - FRANK MOSER T3N-R65W-S22 | Minor source | No |
| NOBLE ENERGY - FRANK MULVERY GOODHARD | Minor source | No |
| NOBLE ENERGY - FRANK T4N-R63W-S7 L01 | Minor source | No |
| NOBLE ENERGY - FRANK T4N-R64W-S12 L03 | Minor source | No |
| NOBLE ENERGY - FRANKIE T4N-R65W-S4 L01 | Minor source | No |
| NOBLE ENERGY - FRANKLIN C17-69HN | Minor source | No |
| NOBLE ENERGY - FRICK C17-79HN | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.