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

For Delaware, general hazardous chemical threshold is 55 gallons or 500 pounds, whichever is lower; ehs threshold is Threshold Planning Quantity (TPQ) if lower than 55 gallons or 500 pounds; special categories or chemicals is Chemicals used exclusively for heating the facility: 10,000-pound threshold; filing deadline is March 1, recorded from its source on 2026-08-15.

- **State:** Delaware _(verified: appears in the quote below)_
- **General hazardous chemical threshold:** 55 gallons or 500 pounds, whichever is lower
- **EHS threshold:** Threshold Planning Quantity (TPQ) if lower than 55 gallons or 500 pounds _(verified: appears in the quote below)_
- **Special categories or chemicals:** Chemicals used exclusively for heating the facility: 10,000-pound threshold _(verified: appears in the quote below)_
- **Filing deadline:** March 1 _(our reading, not quoted from the source)_

## What the source says

> Delaware, the reporting threshold is 55 gallons or 500 pounds for hazardous materials, whichever is lower, unless the Threshold Planning Quantity (TPQ) is lowest, in which case it must be used. The only chemicals with a 10,000-pound threshold are those which are used exclusively for heating the facility.

## Source

- https://www.uscompliance.com/blog/hazardous-material-storage-reports-with-non-federal-thresholds/

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/).