EPA Air · by county
Air-emissions sources in Union County, Arkansas
- 34Facilities
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Every stationary source in Union County, Arkansas 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 Union County
Each of the 34 operating major, synthetic minor and minor sources in Union County, Arkansas has a record page: every source in Union County, A to Z.
By emissions classification in Union 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 Union 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 13
- 2025 inspections 9
- 2024 inspections 21
- 2023 inspections 8
- 2022 inspections 10
- 2021 inspections 12
- 2020 inspections 15
- 2019 inspections 6
- 2018 inspections 13
- 2017 inspections 11
Violations in Union 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 8
- 2023 violations 5
- 2022 violations 5
- 2021 violations 4
- 2020 violations 6
- 2019 violations 6
- 2017 violations 6
Stack tests in Union County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 6
- 2025 stack tests 16
- 2024 stack tests 14
- 2023 stack tests 15
- 2022 stack tests 19
- 2021 stack tests 17
- 2020 stack tests 19
- 2019 stack tests 24
- 2018 stack tests 27
- 2017 stack tests 20
Inspections in Union County, year by year · Violations in Union County, year by year · Stack tests in Union County, year by year
Other counties in Arkansas
Every county in the state with at least three sources on file.
- Poinsett County 13
- Polk County 9
- Pope County 36
- Prairie County 9
- Pulaski County 99
- Randolph County 7
- Saline County 15
- Scott County 5
- Searcy County 3
- Sebastian County 86
- Sharp County 5
- St. Francis County 8
- Stone County 4
- Undetermined County 6
- Van Buren County 29
- Washington County 44
- White County 49
- Woodruff County 5
- Yell County 19
Union County carries 34 of the 1,383 air-emissions sources this register holds in Arkansas, which places it 12th of 71 in that cohort.
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 Union county, AR. It lists 34 facilities in Union county, of which 15 are major sources.