| 2020-12-18 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-12-10 | REPUBLIC STEEL | Pass | State |
| 2020-12-10 | REPUBLIC STEEL | Pass | State |
| 2020-12-10 | REPUBLIC STEEL | Fail | State |
| 2020-12-10 | REPUBLIC STEEL | Pass | State |
| 2020-12-10 | REPUBLIC STEEL | Fail | State |
| 2020-12-10 | REPUBLIC STEEL | Fail | State |
| 2020-12-10 | REPUBLIC STEEL | Pass | State |
| 2020-10-15 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-10-13 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-10-13 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-09-16 | CORRCHOICE, LLC - MASSILLON MILL — high-priority violation on file | Pass | State |
| 2020-09-16 | CORRCHOICE, LLC - MASSILLON MILL — high-priority violation on file | Pass | State |
| 2020-09-16 | CORRCHOICE, LLC - MASSILLON MILL — high-priority violation on file | Pass | State |
| 2020-09-16 | CROWN CORK & SEAL - MASSILLON PLANT 42 | Pass | State |
| 2020-09-16 | CROWN CORK & SEAL - MASSILLON PLANT 42 | Pass | State |
| 2020-09-15 | CORRCHOICE, LLC - MASSILLON MILL — high-priority violation on file | Pass | State |
| 2020-09-15 | CROWN CORK & SEAL - MASSILLON PLANT 42 | Pass | State |
| 2020-09-15 | CROWN CORK & SEAL - MASSILLON PLANT 42 | Pass | State |
| 2020-09-10 | MASSILLON ASPHALT COMPANY | Pass | State |
| 2020-09-10 | MASSILLON ASPHALT COMPANY | Pass | State |
| 2020-05-21 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-21 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-19 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-07 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-07 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-07 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-07 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-07 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-07 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-07 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-07 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-07 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-07 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-07 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-05 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-05-05 | MPLX TERMINALS LLC - CANTON TERMINAL | Pass | State |
| 2020-05-05 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Pass | State |
| 2020-05-05 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Pass | State |
| 2020-05-05 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Pass | State |
| 2020-05-05 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Pass | State |
| 2020-05-04 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-04-23 | CORRCHOICE, LLC - MASSILLON MILL — high-priority violation on file | Pass | State |
| 2020-03-26 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Pass | State |
| 2020-03-26 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Fail | State |
| 2020-03-26 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Pass | State |
| 2020-03-26 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Pass | State |
| 2020-03-26 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Pass | State |
| 2020-03-26 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Pass | State |
| 2020-03-26 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Pass | State |
| 2020-03-26 | ENBRIDGE GAS OHIO - PIKE COMPRESSOR STATION | Pass | State |
| 2020-02-06 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |
| 2020-02-04 | MARATHON PETROLEUM COMPANY LP - CANTON REFINERY — high-priority violation on file | Pass | State |