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 - LOWER LATHAM TOOL ANDERSO | Minor source | No |
| NOBLE ENERGY - LOWER LATHAM WEEZER T4N-R | Minor source | No |
| NOBLE ENERGY - LUCCI T5N-R64W-S1 L03 | Minor source | No |
| NOBLE ENERGY - LUCCI T5N-R64W-S1 L04 | Minor source | No |
| NOBLE ENERGY - MACBAIN T5N-R65W-S32 L01 | Minor source | No |
| NOBLE ENERGY - MAGNUSON GARAND USX T7N-R | Minor source | No |
| NOBLE ENERGY - MARCY PRINTZ T6N-R64W-S31 | Minor source | No |
| NOBLE ENERGY - MARIE GUTTERSEN | Minor source | No |
| NOBLE ENERGY - MARIE GUTTERSEN BURGHART | Minor source | No |
| NOBLE ENERGY - MARKUS T5N-R65W-S28 L01 | Minor source | No |
| NOBLE ENERGY - MARLEY L01 | Synthetic minor source | No |
| NOBLE ENERGY - MARTINEZ T4N-R67W-S27 L01 | Minor source | No |
| NOBLE ENERGY - MARTINSON | Minor source | No |
| NOBLE ENERGY - MATSUSHIMA T4N-R66W-S2 L0 | Minor source | No |
| NOBLE ENERGY - MCCARTHY L01 | Minor source | No |
| NOBLE ENERGY - MCCLELLAN | Minor source | No |
| NOBLE ENERGY - MCCLELLAN FED T8N-R59W-S3 | Minor source | No |
| NOBLE ENERGY - MCCLELLAN PC LG04-15 | Minor source | No |
| NOBLE ENERGY - MCCLELLAN T8N-R59W-S9 L01 | Minor source | No |
| NOBLE ENERGY - MCGUIRK HOWE L01 | Minor source | No |
| NOBLE ENERGY - MCGUIRK HOWE T4N-R64W-S32 | Minor source | No |
| NOBLE ENERGY - MCKAY FED T7N-R64W-S2 L01 | Minor source | No |
| NOBLE ENERGY - MCKAY FED T7N-R65W-S2 L02 | Synthetic minor source | No |
| NOBLE ENERGY - MCKAY T7N-R64W-S2 L01 | Minor source | No |
| NOBLE ENERGY - MCKENNEY T6N-R64W-S14 L01 | Minor source | No |
| NOBLE ENERGY - MCKINLEY #10033000 | Minor source | No |
| NOBLE ENERGY - MCKINLEY MERCURE T4N-R65W | Minor source | No |
| NOBLE ENERGY - MCMILLEN T4N-R65W-S19 L01 | Minor source | No |
| NOBLE ENERGY - MCMILLEN TRUST T4N-R65W-S | Minor source | No |
| NOBLE ENERGY - MCWILLIAMS 415779969 | Minor source | No |
| NOBLE ENERGY - MERCURE MCKINLEY T4N-R65W | Minor source | No |
| NOBLE ENERGY - MERCURE T4N-R65W-S6 L01 | Minor source | No |
| NOBLE ENERGY - MEYER T4N-R65W-S16 L01 | Minor source | No |
| NOBLE ENERGY - MEYER T5N-R66W-S26 L01 | Minor source | No |
| NOBLE ENERGY - MICK SHAINNE T3N-R64W-S18 | Minor source | No |
| NOBLE ENERGY - MILLAGE T4N-R64W-S11 L01 | Minor source | No |
| NOBLE ENERGY - MILLAGE T4N-R64W-S11 L03 | Minor source | No |
| NOBLE ENERGY - MILLER | Minor source | No |
| NOBLE ENERGY - MONFORT KUNER L01 | Minor source | No |
| NOBLE ENERGY - MONFORT T4N-R66W-S10 L02 | Minor source | No |
| NOBLE ENERGY - MONFORT T4N-R66W-S10 L03 | Minor source | No |
| NOBLE ENERGY - MONFORT T4N-R66W-S9 L01 | Minor source | No |
| NOBLE ENERGY - MONFORT T5N-R63W-S30 L01 | Minor source | No |
| NOBLE ENERGY - MOORE UPRC L01 | Minor source | No |
| NOBLE ENERGY - MOORE UPRC T4N-R65W-S15 L | Minor source | No |
| NOBLE ENERGY - MORO FARMS T6N-R65W-S20L | Minor source | No |
| NOBLE ENERGY - MOSER CHAMP T4N-R65W-S34 | Minor source | No |
| NOBLE ENERGY - MOSER H22, H34 ECONODE | Synthetic minor source | No |
| NOBLE ENERGY - MOSER L03 | Minor source | No |
| NOBLE ENERGY - MOSER T3N-R65W-S22 L01 | Synthetic minor source | No |
| NOBLE ENERGY - MOSER T4N-R65W-S10 L01 | Minor source | No |
| NOBLE ENERGY - MOSER T4N-R65W-S10 L02 | Minor source | No |
| NOBLE ENERGY - MOSER THORSON T3N-R65W-S2 | Synthetic minor source | No |
| NOBLE ENERGY - MOSSBERG T5N-R66W-S28 L01 | Minor source | No |
| NOBLE ENERGY - MUIRHEAD T4N-R65W-S1 L01 | Minor source | No |
| NOBLE ENERGY - NAKAGAWA T5N-R64W-S13 L01 | Minor source | No |
| NOBLE ENERGY - NAKAGAWA T5N-R64W-S13 L02 | Minor source | No |
| NOBLE ENERGY - NCLP AA06, AA07 MAHALO ST | Synthetic minor source | Yes |
| NOBLE ENERGY - NCLP L01 | Minor source | No |
| NOBLE ENERGY - NCLP PC AA04 AA06 ECONODE | Minor source | No |
| NOBLE ENERGY - NCLP T6N-R63W-S8 L01 | Synthetic minor source | No |
| NOBLE ENERGY - NELSON T6N-R65W-S22 L01 | Minor source | No |
| NOBLE ENERGY - NICE RADKE MOSER T3N-R65W | Minor source | No |
| NOBLE ENERGY - NICHOLS T5N-R66W-S35 L02 | Minor source | No |
| NOBLE ENERGY - NIX PRODUCE T4N-R64W-S28 | Minor source | No |
| NOBLE ENERGY - NO WORRIES T4N-R65W-S14 L | Synthetic minor source | No |
| NOBLE ENERGY - NOFFSINGER L01 | Minor source | No |
| NOBLE ENERGY - OCOMA T4N-R64W-S17 L01 | Minor source | No |
| NOBLE ENERGY - OCOMA T4N-R64W-S17 L02 | Minor source | No |
| NOBLE ENERGY - OCOMA T4N-R64W-S31 L02 | Minor source | No |
| NOBLE ENERGY - OCOMA T4N-R65W-S25 L01 | Minor source | No |
| NOBLE ENERGY - OCOMA T5N-R64W-S29 L01 | Minor source | No |
| NOBLE ENERGY - ORR ROGERS EGGE USX L01 | Synthetic minor source | No |
| NOBLE ENERGY - OSCAR Y10 ECONODE T2N-R64 | Synthetic minor source | No |
| NOBLE ENERGY - OSTER VICTOR T4N-R64W-S19 | Minor source | No |
| NOBLE ENERGY - OTTOSON T7N-R65W-S32 L01 | Minor source | No |
| NOBLE ENERGY - PAPPENHIEM L01 | Minor source | No |
| NOBLE ENERGY - PARKER BAUMBARTNER T2N-R6 | Minor source | No |
| NOBLE ENERGY - PATRIOT L04 | Minor source | No |
| NOBLE ENERGY - PATRIOT T5N-R64W-S16 L03 | Minor source | No |
| NOBLE ENERGY - PATRIOT T5N-R64W-S9 L01 | Minor source | No |
| NOBLE ENERGY - PEDRO ST L01 | Minor source | No |
| NOBLE ENERGY - PEDRO ST T4N-R65W-S36 L03 | Synthetic minor source | No |
| NOBLE ENERGY - PEPERZAK T6N-R64W-S12 L01 | Minor source | No |
| NOBLE ENERGY - PERKINS T2N-R64W-S5 L01 | Minor source | No |
| NOBLE ENERGY - PETERSON PC LG19-06 | Minor source | No |
| NOBLE ENERGY - PETERSON T6N-R65W-S21 L01 | Minor source | No |
| NOBLE ENERGY - PETRIKIN L01 | Minor source | No |
| NOBLE ENERGY - PETTINGER USX T7N-R64W-S2 | Minor source | No |
| NOBLE ENERGY - PHERSON BUCKMUR T5N-R64W- | Minor source | No |
| NOBLE ENERGY - PHILLIPS T5N-R67W-S24 L01 | Minor source | No |
| NOBLE ENERGY - PIONEER HP UPRC HP FARMS | Minor source | No |
| NOBLE ENERGY - PLATTEVILLE STATION | Minor source | No |
| NOBLE ENERGY - POLLOCK HADDIX LANE ALOYS | Minor source | No |
| NOBLE ENERGY - PROSPECT T4N-R64W-S26 L02 | Minor source | No |
| NOBLE ENERGY - PTASNIK T9N-R59W-S20 L01 | Minor source | No |
| NOBLE ENERGY - PTASNIK T9N-R59W-S28 L01 | Minor source | No |
| NOBLE ENERGY - PTASNIK T9N-R59W-S29 L01 | Minor source | No |
| NOBLE ENERGY - PTF T4N-R64W-S32 L01 | Minor source | No |
| NOBLE ENERGY - PUYPE GUNTHER T5N-R64W-S1 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.