EPA Air · by county
Air-emissions sources in Carroll County, Maryland
- 224Facilities
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Every stationary source in Carroll County, Maryland 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 Carroll County
Each of the 215 operating major, synthetic minor and minor sources in Carroll County, Maryland has a record page: every source in Carroll County, A to Z.
By emissions classification in Carroll 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 Carroll 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 4
- 2025 inspections 6
- 2024 inspections 24
- 2023 inspections 23
- 2022 inspections 21
- 2021 inspections 20
- 2020 inspections 24
- 2019 inspections 21
- 2018 inspections 24
- 2017 inspections 29
Stack tests in Carroll County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
Inspections in Carroll County, year by year · Stack tests in Carroll County, year by year
Other counties in Maryland
Every county in the state with at least three sources on file.
- Allegany County 126
- Anne Arundel County 672
- Baltimore County 1,116
- Baltimore (city) County 1,788
- Calvert County 70
- Caroline County 44
- Cecil County 142
- Charles County 134
- Dorchester County 85
- Frederick County 383
- Garrett County 79
- Harford County 317
- Howard County 234
- Kent County 47
- Montgomery County 1,332
- Prince George's County 1,450
- Queen Anne's County 45
- Somerset County 58
- St. Mary's County 43
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 Carroll county, MD. It lists 224 facilities in Carroll county and 4 major sources.