EPA Air · stack tests by county and year
Air-emissions stack tests in Wells County, Indiana, 2026
- 31Stack 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 Wells 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 Wells County facility page.
Wells County, Indiana, 2026
Air-emissions stack tests in Wells County, other years
Air-emissions stack tests recorded in Wells County, Indiana, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-05-13 | MATALCO BLUFFTON LLC — high-priority violation on file | Pass | State |
| 2026-05-13 | MATALCO BLUFFTON LLC — high-priority violation on file | Pass | State |
| 2026-05-13 | MATALCO BLUFFTON LLC — high-priority violation on file | Pass | State |
| 2026-05-13 | MATALCO BLUFFTON LLC — high-priority violation on file | Pass | State |
| 2026-04-28 | NOVAE LLC — high-priority violation on file | Pass | State |
| 2026-04-28 | NOVAE LLC — high-priority violation on file | Pass | State |
| 2026-04-28 | NOVAE LLC — high-priority violation on file | Pass | State |
| 2026-04-28 | NOVAE LLC — high-priority violation on file | Pass | State |
| 2026-04-16 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2026-04-16 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2026-04-01 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-04-01 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-04-01 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-04-01 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-03-31 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-03-31 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-03-31 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-03-31 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-03-30 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-03-30 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-01-29 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2026-01-29 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2026-01-29 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2026-01-29 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2026-01-29 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2026-01-28 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2026-01-28 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2026-01-22 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-01-22 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-01-21 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2026-01-21 | MONTPELIER GENERATING STATION 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.