# Ohio — EPCRA Tier II hazardous chemical inventory reporting thresholds by state

For Ohio, general hazardous chemical threshold is 10,000 pounds; ehs threshold is 500 pounds or the listed threshold planning quantity (TPQ), whichever is less; filing deadline is March 1; citation is Section 3750.08 of the ORC, recorded from its source on 2026-09-22.

- **State:** Ohio
- **General hazardous chemical threshold:** 10,000 pounds _(verified: appears in its own passage below)_
- **EHS threshold:** 500 pounds or the listed threshold planning quantity (TPQ), whichever is less _(verified: appears in its own passage below)_
- **Filing deadline:** March 1 _(verified: appears in its own passage below)_
- **Citation:** Section 3750.08 of the ORC _(our reading, not quoted from the source)_

## What the source says

> The TQ for hazardous chemicals is 10,000 pounds.

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### General hazardous chemical threshold

> The TQ for hazardous chemicals is 10,000 pounds.

### EHS threshold

> The TQ for extremely hazardous substances is 500 pounds or the listed threshold planning quantity (TPQ), whichever is less.

### Filing deadline

> This report is due annually on March 1, following the calendar year in which the chemicals were stored.

### Citation

> Section 3750.08 of the ORC requires reporting of volume and location inventory information.

## Source

- https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/27/serc/SERC_Manual.pdf

Last verified: 2026-09-22. Review by: 2027-09-22.
Part of [EPCRA Tier II hazardous chemical inventory reporting thresholds by state](https://referencesource.org/epcra-tier-ii-state-reporting-thresholds/).