EPA Air · by county
Air-emissions sources in Stanislaus County, California
- 40Facilities
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Every stationary source in Stanislaus County, California 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.
Every source’s record in Stanislaus County
Each of the 40 operating major, synthetic minor and minor sources in Stanislaus County, California has a record page: every source in Stanislaus County, A to Z.
By emissions classification in Stanislaus 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.
Inspections in Stanislaus 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 193
- 2025 inspections 176
- 2024 inspections 196
- 2023 inspections 196
- 2022 inspections 113
- 2021 inspections 117
- 2020 inspections 145
- 2019 inspections 105
- 2018 inspections 98
- 2017 inspections 89
Violations in Stanislaus 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.
- 2024 violations 13
- 2023 violations 33
- 2022 violations 37
- 2021 violations 18
- 2020 violations 34
- 2019 violations 20
- 2018 violations 16
- 2017 violations 19
Stack tests in Stanislaus County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 246
- 2025 stack tests 579
- 2024 stack tests 3,977
- 2023 stack tests 595
- 2022 stack tests 627
- 2021 stack tests 1,917
- 2020 stack tests 846
- 2019 stack tests 349
- 2018 stack tests 548
- 2017 stack tests 382
Inspections in Stanislaus County, year by year · Violations in Stanislaus County, year by year · Stack tests in Stanislaus County, year by year
Other counties in California
Every county in the state with at least three sources on file.
- San Diego County 126
- San Francisco County 36
- San Joaquin County 74
- San Luis Obispo County 16
- San Mateo County 34
- Santa Barbara County 136
- Santa Clara County 51
- Santa Cruz County 5
- Shasta County 22
- Solano County 31
- Sonoma County 23
- Sutter County 8
- Tehama County 11
- Tulare County 19
- Tuolumne County 4
- Undetermined County 32
- Ventura County 41
- Yolo County 16
- Yuba County 8
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for Stanislaus county, CA. It lists 40 facilities in Stanislaus county and 26 major sources.