EPA Air · by county
Air-emissions sources in Armstrong County, Pennsylvania
- 79Facilities
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Every stationary source in Armstrong County, Pennsylvania 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 Armstrong County
Each of the 79 operating major, synthetic minor and minor sources in Armstrong County, Pennsylvania has a record page: every source in Armstrong County, A to Z.
By emissions classification in Armstrong 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 Armstrong 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 51
- 2025 inspections 68
- 2024 inspections 56
- 2023 inspections 48
- 2022 inspections 55
- 2021 inspections 80
- 2020 inspections 68
- 2019 inspections 70
- 2018 inspections 61
- 2017 inspections 80
Stack tests in Armstrong County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 19
- 2025 stack tests 17
- 2024 stack tests 24
- 2023 stack tests 19
- 2022 stack tests 16
- 2021 stack tests 19
- 2020 stack tests 10
- 2019 stack tests 12
- 2018 stack tests 16
- 2017 stack tests 19
Inspections in Armstrong County, year by year · Stack tests in Armstrong County, year by year
Other counties in Pennsylvania
Every county in the state with at least three sources on file.
- Adams County 63
- Allegheny County 1,374
- Beaver County 95
- Bedford County 37
- Berks County 216
- Blair County 105
- Bradford County 138
- Bucks County 417
- Butler County 187
- Cambria County 106
- Cameron County 15
- Carbon County 30
- Centre County 84
- Chester County 235
- Clarion County 41
- Clearfield County 99
- Clinton County 46
- Columbia County 56
- Crawford County 61
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 Armstrong county, PA. It lists 79 facilities in Armstrong county, including 3 major sources.