EPA Air · stack tests by county and year
Air-emissions stack tests in DeKalb County, Indiana, 2026
- 26Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in DeKalb County, Indiana during 2026. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the DeKalb County facility page.
DeKalb County, Indiana, 2026
- Inspections 12
Air-emissions stack tests in DeKalb County, other years
What stands out
- Stack tests in DeKalb County, Indiana, fell from 77 in 2025, the previous year on file, to 26 in 2026.
- The county’s file for stack tests holds 10 years of events, from 2017 through 2026.
- Its 26 stack tests rank 17th of the 56 county cells in Indiana for 2026.
- Its 26 stack tests are 2% of the 1,315 the state’s file holds for 2026.
Every line is computed by formula from the state’s stored file; nothing is estimated.
Air-emissions stack tests recorded in DeKalb County, Indiana, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-08-11 | SCOT INDUSTRIES INC | Pass | State |
| 2026-07-22 | METAL TECHNOLOGIES AUBURN LLC — high-priority violation on file | Pass | State |
| 2026-05-12 | STEEL DYNAMICS, INC. FLAT ROLL GROUP, BUTLER DIVISION — high-priority violation on file | Pass | State |
| 2026-05-12 | STEEL DYNAMICS, INC. FLAT ROLL GROUP, BUTLER DIVISION — high-priority violation on file | Pass | State |
| 2026-05-12 | STEEL DYNAMICS, INC. FLAT ROLL GROUP, BUTLER DIVISION — high-priority violation on file | Pass | State |
| 2026-05-12 | STEEL DYNAMICS, INC. FLAT ROLL GROUP, BUTLER DIVISION — high-priority violation on file | Pass | State |
| 2026-05-12 | STEEL DYNAMICS, INC. FLAT ROLL GROUP, BUTLER DIVISION — high-priority violation on file | Pass | State |
| 2026-04-22 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-22 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-22 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-22 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-22 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-22 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-22 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-22 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-22 | METAL TECHNOLOGIES AUBURN LLC — high-priority violation on file | Pass | State |
| 2026-04-22 | METAL TECHNOLOGIES AUBURN LLC — high-priority violation on file | Pass | State |
| 2026-04-21 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-21 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-21 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-21 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-21 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-21 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-21 | THERMA TRU CORPORATION | Pass | State |
| 2026-04-21 | THERMA TRU CORPORATION | Pass | State |
| 2026-01-26 | METAL TECHNOLOGIES AUBURN LLC — high-priority violation on file | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in DeKalb county, IN, in 2026. It lists 25 stack tests recorded in 2026.