EPA Air · stack tests by county and year
Air-emissions stack tests in Wells County, Indiana, 2025
- 20Stack 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 2025. 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, 2025
Air-emissions stack tests in Wells County, other years
Air-emissions stack tests recorded in Wells County, Indiana, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-11-04 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-11-04 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-11-04 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-11-04 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-25 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-25 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-25 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-25 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-24 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-24 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-24 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-24 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-23 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-23 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-23 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-09-23 | VALERO RENEWABLE FUELS COMPANY LLC DBA VALERO BLUFFTON PLANT | Pass | State |
| 2025-07-18 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2025-07-18 | MONTPELIER GENERATING STATION LLC — high-priority violation on file | Pass | State |
| 2025-06-18 | MATALCO BLUFFTON LLC — high-priority violation on file | Fail | State |
| 2025-06-18 | MATALCO BLUFFTON 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.