Clean Air Act stationary source · ICIS-AIR IN0000001814100185
OPTA WALKERTON, Walkerton, IN: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Synthetic minor sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 2Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 3Formal enforcement actions since January 1, 2017
OPTA WALKERTON, at 205 SR 104, Walkerton in St. Joseph County, Indiana, is an operating synthetic minor source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “No Violation Identified”. St. Joseph County is on EPA’s Green Book list of areas that do not meet a national air quality standard. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.
Identity
| Facility as filed | OPTA WALKERTON |
|---|---|
| ICIS-AIR ID | IN0000001814100185 |
| EPA facility registry ID | 110012118822 |
| Operating status | Operating |
| Emissions classification | Synthetic minor source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | 205 SR 104, Walkerton, IN 46574 |
| County | St. Joseph County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Primary metal manufacturing (NAICS 3314) |
| SIC code | 3299 |
| EPA region | 05 |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs OPTA WALKERTON is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.
Compliance evaluations
- 2Evaluations since January 1, 2017
- 2Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| March 1, 2023 | FCE On-Site | State | Federally-Enforceable State Operating Permit - Non Title V |
| July 10, 2018 | FCE On-Site | State | Federally-Enforceable State Operating Permit - Non Title V |
Violations
- 5Violation determinations since January 1, 2017
- 0Of them high-priority
A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| August 2, 2024 | Earliest FRV determination | State | Federally-Enforceable State Operating Permit - Non Title V |
| March 1, 2023 | Earliest FRV determination | State | Federally-Enforceable State Operating Permit - Non Title V |
| August 13, 2021 | Earliest FRV determination | State | Federally-Enforceable State Operating Permit - Non Title V |
| August 21, 2020 | Earliest FRV determination | State | Federally-Enforceable State Operating Permit - Non Title V |
| July 10, 2018 | Earliest FRV determination | State | Federally-Enforceable State Operating Permit - Non Title V |
Enforcement and penalties
3 formal enforcement actions since January 1, 2017, 3 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.
| Date | What EPA recorded | Agency | Penalty, as filed |
|---|---|---|---|
| June 26, 2026 | Administrative Order | State | $9,000 |
| June 26, 2026 | Administrative Order | State | $6,600 |
| November 19, 2021 | Administrative Order | State | $500 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| June 2, 2026 | Notice of Violation | State |
| April 24, 2026 | Notice of Violation | State |
| September 28, 2021 | Notice of Violation | State |
Stack tests
- 2Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| August 30, 2023 | Pass | State |
| August 29, 2023 | Pass | State |
Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.
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How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110012118822 there.
Nearby on the register
- Air-emissions sources in St. Joseph County
- Every source record in St. Joseph County, A to Z
- Air-emissions sources in Indiana
- Every source record in Indiana, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.