Washington
For Washington, general hazardous chemical threshold is 10,000 pounds or more; ehs threshold is 500 pounds OR the threshold planning quantity (TPQ), whichever is lower; filing deadline is March 1, verified against its source on 2026-09-22.
- State
- Washington
- General hazardous chemical threshold
- 10,000 pounds or more verified
- EHS threshold
- 500 pounds OR the threshold planning quantity (TPQ), whichever is lower verified
- Filing deadline
- March 1 verified
What the source says
If your facility stores any of the following on-site at any time, you must submit a Tier Two report: Hazardous chemicals: 10,000 pounds or more.
— ecology.wa.gov, retrieved 2026-09-22
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
If your facility stores any of the following on-site at any time, you must submit a Tier Two report: Hazardous chemicals: 10,000 pounds or more.
EHS threshold
Extremely Hazardous Substances (EHS): 500 pounds OR the threshold planning quantity (TPQ), whichever is lower.
Filing deadline
Tier Two is an annual report of hazardous chemicals and extremely hazardous substances (EHS). It is one of the key reports required under the Emergency Planning and Community Right-to-Know Act (EPCRA). Reports are due March 1 every year:
— all from ecology.wa.gov, retrieved 2026-09-22
Source
- ecology.wa.govhttps://ecology.wa.gov/Regulations-Permits/Reporting-requirements/Emergency-Planning-Community-Right-to-Know-Act/Tier-Two-reporting