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 |
|---|---|---|
| NOBLE TANK BATTERY 10085600 | Minor source | No |
| NOBLE TANK BATTERY 10134100 | Minor source | No |
| NOBLE TANK BATTERY 10144700 | Minor source | No |
| NOBLE TANK BATTERY 10786300 | Minor source | No |
| NOBLE TANK BATTERY 11301100 | Minor source | No |
| NOBLE TANK BATTERY 11304600 | Minor source | No |
| NOBLE TANK BATTERY 11307800 | Minor source | No |
| NOBLE TANK BATTERY 11312600 | Minor source | No |
| NOBLE TANK BATTERY 11324300 | Minor source | No |
| NOBLE TANK BATTERY 11339200 | Minor source | No |
| NOBLE TANK BATTERY 11353700 | Minor source | No |
| NOBLE TANK BATTERY 11524500 | Minor source | No |
| NOBLE TANK BATTERY 415682832 | Minor source | No |
| NOBLE TANK BATTERY 415814684 | Minor source | No |
| NOBLE TANK BATTERY 415814828 | Minor source | No |
| NOBLE TANK BATTERY 415848584 | Minor source | No |
| NOBLE TANK BATTERY GUTTERSEN #415771433 | Minor source | No |
| NOBLE-WELLS RANCH USX AE T6N-R62W-S29 L0 | Minor source | No |
| NORTH COLORADO MEDICAL CENTER - MAIN | Synthetic minor source | No |
| NORTHERN COLORADO CONST - NCCI PIT #1 | Minor source | No |
| NORTHERN COLORADO FEED | Minor source | No |
| NORTHERN FEED & BEAN CO | Minor source | No |
| NORTHERN PRIMING & PRESTAIN INC | Synthetic minor source | No |
| NU WAY CLNRS | Not applicable | No |
| NUTRI-TURF - 43308 WELD COUNTY ROAD #15 | Major source | No |
| OAK CREEK CONSULTING - MALONE GRAVEL PIT | Minor source | No |
| OFFEN PETROLEUM | Minor source | No |
| OFFEN PETROLEUM | Minor source | No |
| OFFEN PETROLEUM - SEE 123/1337 | Minor source | No |
| OIL STATES ENERGY SERVICES -OSES BERTHOU | Minor source | No |
| OLDCASTLE INFRASTRUCTURE - LOVELAND | Minor source | No |
| OLDCASTLE SW GROUP - WATTENBERG WEST | Minor source | No |
| ONEOK BAKKEN - OPPL INTERCONNECT STATION | Minor source | No |
| ONEOK ELK CREEK - STONEHAM PUMP STATION | Minor source | No |
| ONEOK NGL - HEREFORD RANCH/OPPL JUNCTN | Minor source | No |
| OUTRIGGER DJ - BAYOU COMPRESSOR STATION | Minor source | No |
| OVERLAND - HEREFORD RANCH INTERCONNECT | Minor source | No |
| OVERLAND PASS - BAKKEN INTERCONNECT | Minor source | No |
| OVERLAND PASS - BRIGGSDALE PUMP STATION | Minor source | No |
| OVERLAND PASS - CHALK BLUFFS METER STA. | Minor source | No |
| OVERLAND PASS - FT LUPTON METER NORTH | Minor source | No |
| OVERLAND PASS - FT LUPTON METER SOUTH | Minor source | No |
| OVERLAND PASS - FT LUPTON/DJ JUNCTION | Minor source | No |
| OVERLAND PASS - GILCREST METER STATION | Minor source | No |
| OVERLAND PASS - GROVER STATION | Minor source | No |
| OVERLAND PASS - LUCERNE/DJ JUNCTION | Minor source | No |
| OVERLAND PASS - MEWBOURN METER | Minor source | No |
| OVERLAND PASS - MEWBOURN/FT LUPTON | Minor source | No |
| OVERLAND PASS - NOBLE LILLI METER | Minor source | No |
| OVERLAND PASS PIPELINE - BUCKINGHAM PUMP | Synthetic minor source | No |
| OVERLAND PASS PIPELINE - KEENESBURG METE | Minor source | No |
| OVERLAND PASS PIPELINE - KEOTA METER | Minor source | No |
| OVERLAND PASS PIPELINE - PIERCE METER ST | Minor source | No |
| OVERLAND PASS PIPELINE - REDTAIL METER | Minor source | No |
| OVERLAND PASS PIPELINE -CENTENNIAL METER | Minor source | No |
| OWENS-BROCKWAY GLASS - WINDSOR #28 | Major source | Yes |
| PATINA FRI 2-18 | Minor source | No |
| PATINA LOWER LATHAM 2 GROUP SEE 123.1747 | Minor source | No |
| PATINA MILLENSIFER GROUP SEE 123.1751 | Minor source | No |
| PATINA PROSPECT CO 26 GROUP SEE 123.1751 | Minor source | No |
| PATINA SHANNON 14-2 & 3 | Minor source | No |
| PAWNEE TERMINAL | Synthetic minor source | No |
| PAWNEE WASTE - PAWNEE WASTE E&P LANDFILL | Minor source | No |
| PDC - API 2-9, 15, 16; 5 | Minor source | No |
| PDC - 066630-NWSW-BATT | Minor source | No |
| PDC - A R 18-44 | Minor source | No |
| PDC - ADAMS 21-20 | Minor source | No |
| PDC - ADAMSON 28-1; 5 | Minor source | No |
| PDC - ANDERSON 31-10H | Minor source | No |
| PDC - ANDERSON 31-13 | Minor source | No |
| PDC - ANDERSON 31, 32, 42-10 | Minor source | No |
| PDC - ANDERSON 34R-203, 223 | Minor source | No |
| PDC - ANDERSON R 1-13 | Minor source | No |
| PDC - ARMKNECHT 14-32H | Minor source | No |
| PDC - AVERY 11, 12-10 | Minor source | No |
| PDC - AVERY 12-10 | Minor source | No |
| PDC - AVERY 24-10D | Minor source | No |
| PDC - B JOHNSON 12-11 | Minor source | No |
| PDC - BAILEY 34-1, 2; 14, 24-34; 5 | Minor source | No |
| PDC - BAKER 42-5 | Minor source | No |
| PDC - BECKER 5; 5-6,7,8,10,11;6-11I | Minor source | No |
| PDC - BECKER RANCH 5E-223,403 5J-303,343 | Minor source | No |
| PDC - BENSON 23-33D | Minor source | No |
| PDC - BERNHARDT 1-3 | Minor source | No |
| PDC - BERNHARDT 7-1, 2 | Minor source | No |
| PDC - BERNHARDT 7-1, 2 | Minor source | No |
| PDC - BERRY IC PAD | Synthetic minor source | No |
| PDC - BIXLER 31, 32-5 | Minor source | No |
| PDC - BLEHM 30-1,44-30; UHRICH 33, 43-30 | Minor source | No |
| PDC - BLOSKAS 13-9 | Minor source | No |
| PDC - BOLET 1, 34-17 | Minor source | No |
| PDC - BOLET 1, 34-17 | Minor source | No |
| PDC - BOLET 2 | Minor source | No |
| PDC - BOLET 42-17 | Minor source | No |
| PDC - BOND 1, 21, 32-9; BLOSKAS 9-23; B. | Minor source | No |
| PDC - BOND 1, 21, 32-9; BLOSKAS 9-23; B. | Minor source | No |
| PDC - BOOTH 11, 12D, 21, 22-35U & 35AU | Minor source | No |
| PDC - BRIGGS 1-32 | Minor source | No |
| PDC - BRIGHT-DUNN 18-D | Minor source | No |
| PDC - BROWN 13-2H | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.