EPA Air · stack tests by state and year
Air-emissions stack tests in California, 2024
- 18,905Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in California during 2024; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in California, 2024
- Kern County 7,524
- San Joaquin County 5,176
- Stanislaus County 3,977
- Fresno County 597
- Merced County 538
- Madera County 235
- Kings County 204
- Tulare County 195
- Los Angeles County 169
- San Bernardino County 90
- Monterey County 36
- Orange County 35
- Riverside County 31
- Ventura County 27
- Sacramento County 25
- San Diego County 15
- Placer County 12
- Undetermined County 10
- Santa Cruz County 5
- Humboldt County 3
California, other years
Air-emissions stack tests recorded in California, 2024
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-10 | MODESTO IRRIGATION UNIT 1&2 | MODESTO, Stanislaus, CA | Pass | Local |
| 2024-09-09 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-09 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-09 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-09 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-09 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-09 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-09 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-09 | LINN OPERATING INC — high-priority violation on file | TAFT, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | AERA ENERGY - KERN MIDWAY — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | SENTINEL PEAK RESOURCES CA LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | INGOMAR PACKING COMPANY | LOS BANOS, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-06 | GREIF BROTHERS — high-priority violation on file | MERCED, Merced, CA | Pass | Local |
| 2024-09-05 | EQUILON ENTER. LLC, SHELL OIL PROD. US | CARSON, Los Angeles, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | LOS GATOS TOMATO PRODUCTS | HURON, Fresno, CA | Pass | Local |
| 2024-09-05 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-05 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-05 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-05 | AERA ENERGY LLC — high-priority violation on file | BAKERSFIELD, Kern, CA | Pass | Local |
| 2024-09-04 | LOMA LINDA UNIVERSITY | LOMA LINDA, San Bernardino, CA | Pass | Local |
| 2024-09-04 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2024-09-04 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2024-09-04 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2024-09-04 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2024-09-04 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2024-09-04 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2024-09-04 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2024-09-04 | AERA ENERGY — high-priority violation on file | COALINGA, Fresno, CA | Pass | Local |
| 2024-09-04 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-04 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-04 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-04 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-04 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-04 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-04 | TRC CYPRESS GROUP LLC | TAFT, Kern, CA | Pass | Local |
| 2024-09-04 | ARCOSA LIGHTWEIGHT, FRAZIER PARK (1603) — high-priority violation on file | FRAZIER PARK, Ventura, CA | Pass | Local |
| 2024-09-04 | AERA ENERGY LLC | VENTURA, Ventura, CA | Pass | Local |
| 2024-09-03 | LOMA LINDA UNIVERSITY | LOMA LINDA, San Bernardino, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
| 2024-09-03 | E & J GALLO WINERY | FRESNO, Fresno, CA | Pass | Local |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.