Regulations last checked for updates: May 01, 2025

Title 40 - Protection of Environment last revised: Nov 01, 2025
§ 355.12 - What quantities of extremely hazardous substances trigger emergency planning requirements?

Any EHS present at your facility in an amount equal to or greater than its TPQ triggers the emergency planning requirements of this subpart. The TPQs are listed in Appendices A and B of this part in the column labeled “threshold planning quantity.”

authority: Sections 302, 303, 304, 325, 327, 328, and 329 of the Emergency Planning and Community Right-to-Know Act of 1986 (EPCRA) (42 U.S.C. 11002,11003,11004,11045,11047,11048,and
source: 73 FR 65462, Nov. 3, 2008, unless otherwise noted.
cite as: 40 CFR 355.12