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 |
|---|---|---|
| PDC - HENRY 5-2; LEE 1-5 | Minor source | No |
| PDC - HEYDE 26RD | Minor source | No |
| PDC - HICKS 31, 32, 41, 42-29/ OLSON... | Minor source | No |
| PDC - HIGH PLAINS 25; LASALLE 25 SEC HZ | Minor source | No |
| PDC - HIGHPOINTE 10C, ND/STEPHENS FOE 10 | Minor source | No |
| PDC - HIGHPOINTE 10D/B&B 10-34, 44 | Minor source | No |
| PDC - HILL 6T-421 | Minor source | No |
| PDC - HOFFNER 24-35 | Minor source | No |
| PDC - HOLTON I, J, K, L-12HN, HC | Minor source | No |
| PDC - HOSHIKO 2-2 | Minor source | No |
| PDC - HUNGENBERG 13, 14-16 | Minor source | No |
| PDC - HUNGENBERG 13, 14-33 | Minor source | No |
| PDC - HUNGENBERG 4, 5-20 | Minor source | No |
| PDC - J & L FARMS 11, 12, 21-29 | Minor source | No |
| PDC - J & L FARMS 11, 12, 21-29 | Minor source | No |
| PDC - J & L FARMS 13, 22, 23, 33-29 &. | Minor source | No |
| PDC - J & L FARMS 23-11, 12 | Minor source | No |
| PDC - J & L FARMS 32, 42-19 | Minor source | No |
| PDC - JOHNSON 2-22 | Minor source | No |
| PDC - JOHNSON 2-22 | Minor source | No |
| PDC - JOHNSON OLY 1 | Synthetic minor source | No |
| PDC - JOHNSTON 1; 5; 43-24 | Minor source | No |
| PDC - KAISER HZ TANK BATTERY | Minor source | No |
| PDC - KENT 24-1 | Minor source | No |
| PDC - KERBS 14-15 | Minor source | No |
| PDC - KERBS 23, 24, 33, 34, 43, 44-15 | Minor source | No |
| PDC - KERBS 23, 24, 33, 34, 43, 44-15 | Minor source | No |
| PDC - KINZER 11-28, 28-1, 28A & 28-KD | Minor source | No |
| PDC - KINZER 11-28, 28-1, 28A & 28-KD | Minor source | No |
| PDC - KNOX 41-3 | Minor source | No |
| PDC - LAIR; RAM LAND | Minor source | No |
| PDC - LATHAM 7-1, 2/ HONEBEIN 13-7 U | Minor source | No |
| PDC - LAW 1; 9-12; LOUSTALET 42-12 | Minor source | No |
| PDC - LEAFGREN 1, 13, 23-17 | Minor source | No |
| PDC - LECLERG 31-22 | Minor source | No |
| PDC - LEFFLER 13, 14, 23, 24-35 & 35B | Minor source | No |
| PDC - LEFFLER 2 | Minor source | No |
| PDC - LEFFLER 34, 44-35 | Minor source | No |
| PDC - LEFFLER 43, 44-2 & 2D, 2TD, 2XD | Minor source | No |
| PDC - LEROY 1; LEROY & PHYLLIS 5; PHI... | Minor source | No |
| PDC - LHI 31-23 | Minor source | No |
| PDC - LOLOFF 35-5 | Minor source | No |
| PDC - LUNDVALL 13-13 | Minor source | No |
| PDC - LUNDVALL UP 7-19 | Minor source | No |
| PDC - MARCY 31-32, 42-31 | Minor source | No |
| PDC - MARIE 1-23 | Minor source | No |
| PDC - MAXEY 2, 33, 43, 44-24 & 24D | Minor source | No |
| PDC - MAXEY 2, 33, 43, 44-24 & 24D | Minor source | No |
| PDC - MAXEY 24O-232, 402; 24P-312, 402 | Minor source | No |
| PDC - MAXEY 24P-232, 332; 24Q-112, 302 | Minor source | No |
| PDC - MCCARTY 28-6 | Minor source | No |
| PDC - MCCARTY 31-1 | Minor source | No |
| PDC - MCINTOSH 43, 44-23 | Minor source | No |
| PDC - MELLON 28-1 | Minor source | No |
| PDC - MEYER 41-7 | Minor source | No |
| PDC - MIENING 2 | Minor source | No |
| PDC - MINERAL-FUELCO 1 | Minor source | No |
| PDC - MININGER-HOFF 1, 2 | Minor source | No |
| PDC - MITANI 1 | Minor source | No |
| PDC - MOORE 31-24C | Minor source | No |
| PDC - MOSER 34-33 | Minor source | No |
| PDC - MOTIS 1; 44-7 | Minor source | No |
| PDC - NATIONAL HOG FARM 13, 24-9 | Minor source | No |
| PDC - NATIONAL HOG FARM 17-11, 12 | Minor source | No |
| PDC - NATIONAL HOG FARM 31, 32, 33,42-21 | Minor source | No |
| PDC - NATIONAL HOG FARM 34, 43, 44-21 | Minor source | No |
| PDC - NELSON 13, 14, 24-34/ P NELSON 34. | Minor source | No |
| PDC - NELSON 13, 24-34/ P NELSON 34-42 | Minor source | No |
| PDC - NELSON 31, 32, 42-33; 33VD/ J N... | Minor source | No |
| PDC - NELSON 41-33 | Minor source | No |
| PDC - NOFFSINGER 12, 22, 32-33 | Minor source | No |
| PDC - NOFFSINGER 31, 32-2D; 2C, SD | Synthetic minor source | No |
| PDC - NORRIS 3, 16-C | Minor source | No |
| PDC - NORTHERN PROP 14-29 | Minor source | No |
| PDC - NORTHERN PROP 14-29 | Minor source | No |
| PDC - NYGREN 19-1 | Minor source | No |
| PDC - O'GRADY 31-9 | Minor source | No |
| PDC - O'GRADY 34-4 | Minor source | No |
| PDC - OSTER 10-1, 2, 3 | Minor source | No |
| PDC - OSTER 10-1, 2, 3 | Minor source | No |
| PDC - OSTER 10-1, 2, 3 | Minor source | No |
| PDC - P.J. 1, 2, 3, 5, 8I | Minor source | No |
| PDC - P&A FARMS 28-1, 2 | Minor source | No |
| PDC - PAPPENHEIM 33, 34, 43, 44-26 | Minor source | No |
| PDC - PARISH 32-2 | Minor source | No |
| PDC - PFENNING 43, 44-31 | Minor source | No |
| PDC - QUANTUM BRUNTZ 13-16 | Minor source | No |
| PDC - RAM LAND 30K-123, 403; 30O-303, 44 | Minor source | No |
| PDC - REICHERT 33, 43-29DU, 29SDU, 29... | Synthetic minor source | No |
| PDC - RICHARD 1 | Minor source | No |
| PDC - RICHTER 34M-203, 423; 34R-223, 343 | Minor source | No |
| PDC - RIEDER 18Q-221,321,421; 18T-201,24 | Synthetic minor source | No |
| PDC - RIEDER 18T-221,321,401;18Y-241,301 | Synthetic minor source | No |
| PDC - ROTHARMEL 1; 22-33, 33A | Minor source | No |
| PDC - ROTHARMEL 11-32H | Minor source | No |
| PDC - ROTHARMEL 11, 21-32 | Minor source | No |
| PDC - ROTHE 13, 23-29U | Minor source | No |
| PDC - ROY CARLSON 43-7/ CARLSON 44-7 | Minor source | No |
| PDC - RUDOLPH 2-33, 2-34 | Minor source | No |
| PDC - RUFF 21, 22-3; VEGA 11-3 | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.