{"data":{"id":"us/40-cfr-355.12","jurisdiction":"us","citation":"40 CFR 355.12","heading":"What quantities of extremely hazardous substances trigger emergency planning requirements?","body":"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.”","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER J—SUPERFUND, EMERGENCY PLANNING, AND COMMUNITY RIGHT-TO-KNOW PROGRAMS","PART 355—EMERGENCY PLANNING AND NOTIFICATION","Subpart B—Emergency Planning"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"2e49f51656957a49cb145217b5154d538fbf72c2ab638c858d2c1d2c77ced430","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-355.11","next":"us/40-cfr-355.13"},"notice":"GroundRules: Original legal text. Not legal advice."}