EPA Air · by county
Air-emissions sources in Union County, Ohio
- 24Facilities
Every stationary source in Union County, Ohio 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.
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 9
- 2025 — inspections 8
- 2024 — inspections 12
- 2023 — inspections 11
- 2022 — inspections 10
- 2021 — inspections 6
- 2020 — inspections 10
- 2019 — inspections 11
- 2018 — inspections 9
- 2017 — inspections 20
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| CMH071 CAMPUS | Major source | No |
| CMH086 CAMPUS | Major source | No |
| CONTITECH USA, LLC. | Major source | No |
| HERITAGE COOPERATIVE | Minor source | No |
| HONDA DEV & MFG OF AMERICA, LLC, MARYSVILLE AUTO PLANT | Major source | Yes |
| HONDA DEVELOPMENT & MANUFACTURING OF AMERICA, LLC - ADC | Major source | No |
| HONDA ENGINEERING NORTH AMERICA, INC. | Major source | Yes |
| HONDA HERITAGE CENTER | Minor source | No |
| HONDA OF AMERICA MFG., INC., - ROADWAYS | Major source | No |
| INTERNATIONAL PAPER- MARYSVILLE INK | Synthetic minor source | No |
| KG AGRI PRODUCTS, INC. | Minor source | No |
| MAI THERMAL AND ACOUSTICAL MANAGEMENT | Minor source | No |
| NATURE PURE, LLC | Minor source | No |
| NESTLE R&D CENTER, INC. | Minor source | No |
| OHIO REFORMATORY FOR WOMEN | Minor source | No |
| PARKER HANNIFIN, HPD | Synthetic minor source | No |
| PERFORMANCE MANUFACTURING CENTER | Major source | No |
| PRECISION COATING SYSTEMS, INC. | Synthetic minor source | No |
| QUANTUM TECHNOLOGIES & SERVICES, INC. | Synthetic minor source | No |
| SHELLY MATERIALS - OSTRANDER | Minor source | No |
| SHELLY MATERIALS PLANT 24 | Synthetic minor source | No |
| SUNRISE CLEANERS | Minor source | No |
| THE SCOTTS CO. | Major source | No |
| VELOCYS | Minor source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.