EPA Air · by county
Air-emissions sources in Marion County, Iowa
- 53Facilities
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Every stationary source in Marion County, Iowa 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 Marion County
Each of the 52 operating major, synthetic minor and minor sources in Marion County, Iowa has a record page: every source in Marion County, A to Z.
By emissions classification in Marion 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 Marion 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 5
- 2025 inspections 3
- 2024 inspections 7
- 2023 inspections 4
- 2022 inspections 6
- 2021 inspections 3
- 2020 inspections 4
- 2019 inspections 4
- 2018 inspections 6
- 2017 inspections 6
Stack tests in Marion County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2025 stack tests 21
- 2023 stack tests 4
- 2022 stack tests 24
- 2021 stack tests 7
- 2019 stack tests 23
- 2017 stack tests 6
Inspections in Marion County, year by year · Stack tests in Marion County, year by year
Other counties in Iowa
Every county in the state with at least three sources on file.
- Jones County 29
- Keokuk County 22
- Kossuth County 33
- Lee County 52
- Linn County 336
- Louisa County 18
- Lucas County 7
- Lyon County 19
- Madison County 21
- Mahaska County 29
- Marshall County 49
- Mills County 11
- Mitchell County 28
- Monona County 16
- Monroe County 17
- Montgomery County 16
- Muscatine County 75
- O'Brien County 34
- Osceola County 13
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
This page from the EPA air register covers Clean Air Act facilities in Marion county, IA. It lists 53 facilities in Marion county and 7 major sources.