EPA Air · by county
Air-emissions sources in Allen County, Indiana
- 80Facilities
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Every stationary source in Allen County, Indiana 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 Allen County
Each of the 77 operating major, synthetic minor and minor sources in Allen County, Indiana has a record page: every source in Allen County, A to Z.
By emissions classification in Allen 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 Allen 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 11
- 2025 inspections 20
- 2024 inspections 27
- 2023 inspections 20
- 2022 inspections 16
- 2021 inspections 13
- 2020 inspections 11
- 2019 inspections 23
- 2018 inspections 17
- 2017 inspections 19
Violations in Allen 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 15
- 2024 violations 11
- 2023 violations 14
- 2022 violations 9
- 2021 violations 6
- 2020 violations 6
- 2019 violations 7
- 2018 violations 4
- 2017 violations 3
Stack tests in Allen County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 21
- 2025 stack tests 42
- 2024 stack tests 39
- 2023 stack tests 40
- 2022 stack tests 33
- 2021 stack tests 41
- 2020 stack tests 41
- 2019 stack tests 16
- 2018 stack tests 32
- 2017 stack tests 20
Inspections in Allen County, year by year · Violations in Allen County, year by year · Stack tests in Allen County, year by year
Other counties in Indiana
Every county in the state with at least three sources on file.
- Adams County 14
- Bartholomew County 22
- Blackford County 7
- Boone County 17
- Carroll County 3
- Cass County 17
- Clark County 35
- Clay County 9
- Clinton County 8
- Crawford County 3
- Daviess County 17
- Dearborn County 16
- Decatur County 12
- DeKalb County 26
- Delaware County 18
- Dubois County 20
- Elkhart County 155
- Fayette County 3
- Floyd County 15
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 Allen county, IN. It lists 80 facilities in Allen county and 23 major sources.