Section 313 - Toxics Release Inventory Reporting

A Toxics Release Inventory (TRI) report must be filed if your business meets ALL of the following criteria during a calendar year:

TRI Reporting Thresholds

The quantities that most often trigger TRI reporting are:

Please note: Certain Persistent Bioaccumulative Toxic (PBT) Chemicals have lower reporting thresholds. There are 16 PBT chemicals and 4 PBT chemical compound categories subject to TRI reporting. The thresholds are:

Reporting thresholds for PBT Chemicals are available at EPA’s website at   

For more information on Washington state data or assistance with EPCRA reporting, contact a Community Right-to-Know Specialist at:

By e-mail:

By phone:   360-407-6178

TRI Coordinator: Diane Fowler [] by email or by phone at (360) 407-6171.