EPA Air · by county
Air-emissions sources in Lake County, Indiana
- 128Facilities
Every stationary source in Lake County, Indiana 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 Lake 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 Lake 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 52
- 2025 — inspections 84
- 2024 — inspections 83
- 2023 — inspections 75
- 2022 — inspections 88
- 2021 — inspections 74
- 2020 — inspections 80
- 2019 — inspections 96
- 2018 — inspections 103
- 2017 — inspections 77
Other counties in Indiana
Every county in the state with at least three sources on file.
- Huntington County 19
- Jackson County 15
- Jasper County 16
- Jay County 12
- Jefferson County 7
- Jennings County 8
- Johnson County 21
- Knox County 16
- Kosciusko County 30
- LaGrange County 27
- LaPorte County 31
- Lawrence County 8
- Madison County 17
- Marion County 159
- Marshall County 37
- Martin County 4
- Miami County 12
- Monroe County 12
- Montgomery County 12
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| SAINT MARGARET MERCY HOSPITAL-DYER CAMPU | Minor source | No |
| SAINT MARY MEDICAL CENTER | Synthetic minor source | Yes |
| SILGAN CONTAINERS MANUFACTURING CORPORATION | Major source | No |
| SOUTH SHORE SLAG LLC - CONTRACTOR OF US STEEL CORPORATION GA | Major source | No |
| SOUTH SHORE SLAG LLC CONTRACTOR OF US STEEL CORPORATION GARY | Major source | No |
| SOUTHLAKE COLLISION CENTER | Minor source | No |
| SUMMIT INC | Synthetic minor source | No |
| TECHNICAL WEIGHING SERVICES INC | Synthetic minor source | No |
| THE COMMUNITY HOSPITAL | Synthetic minor source | No |
| THE PREMCOR PIPELINE COMPANY HAMMOND TERMINAL | Major source | No |
| TMS INTERNATIONAL LLC CONTRACTOR OF CLEVELAND-CLIFFS STEEL L | Major source | No |
| TMS INTERNATIONAL LLC CONTRACTOR OF CLEVELAND-CLIFFS STEEL L | Major source | No |
| TMS INTERNATIONAL LLC CONTRACTOR OF US STEEL CORPORATION GAR | Major source | No |
| TMS INTERNATIONAL LLC CONTRACTOR OF US STEEL CORPORATION GAR | Major source | No |
| TRADEBE TREATMENT AND RECYCLING LLC | Major source | Yes |
| TRANSFLO TERMINAL SERVICES INC | Synthetic minor source | No |
| TRIDENT MACHINE TECHNOLOGIES, INC. | Minor source | No |
| UNILEVER MANUFACTURING US INC | Synthetic minor source | No |
| UNITED CORE, LLC | Minor source | No |
| UNITED STATES GYPSUM COMPANY | Major source | Yes |
| US STEEL CORPORATION EAST CHICAGO TIN OPERATIONS | Major source | No |
| US STEEL CORPORATION GARY WORKS | Major source | Yes |
| VERMETTE MACHINE COMPANY INCORPORATED | Synthetic minor source | No |
| WALSH & KELLY, INC | Synthetic minor source | No |
| WHITING CLEAN ENERGY INC | Major source | No |
| WHITING METALS, LLC | Minor source | No |
| WOLF LAKE TERMINALS INC | Major source | No |
| WR GRACE & CO - CONN | Major source | No |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.