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

For Colorado, general hazardous chemical threshold is 10,000 pounds (federal); ehs threshold is 500 pounds or the TPQ, whichever is lower (federal); special categories or chemicals is Requires use of Tier2 Submit; some LEPCs and fire departments may require additional reporting elements; report name is Tier II; filing deadline is March 1, recorded from its source on 2026-08-15.

- **State:** Colorado _(verified: appears in the quote below)_
- **General hazardous chemical threshold:** 10,000 pounds (federal)
- **EHS threshold:** 500 pounds or the TPQ, whichever is lower (federal)
- **Special categories or chemicals:** Requires use of Tier2 Submit; some LEPCs and fire departments may require additional reporting elements _(verified: appears in the quote below)_
- **Report name:** Tier II
- **Filing deadline:** March 1 _(our reading, not quoted from the source)_

## What the source says

> Colorado: Requires use of Tier2 Submit. The state distributes reports to LEPCs and fire departments that maintain the same reporting requirements. Some LEPCs and fire departments may require additional reporting elements.

## Source

- https://edge-es.com/epcra-tier-ii-reporting-state-by-state-requirements/

Last verified: 2026-08-15. Review by: 2027-08-15.
Part of [EPCRA Tier II hazardous chemical inventory reporting thresholds by state](https://referencesource.org/epcra-tier-ii-state-reporting-thresholds/).