40 CFR § 355.33 - What release quantities of EHSs and CERCLA hazardous substances trigger the emergency release notification requirements of this subpart?

---
identifier: "/us/cfr/t40/s355.33"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 355.33 - What release quantities of EHSs and CERCLA hazardous substances trigger the emergency release notification requirements of this subpart?"
title_number: 40
title_name: "Protection of Environment"
section_number: "355.33"
section_name: "What release quantities of EHSs and CERCLA hazardous substances trigger the emergency release notification requirements of this subpart?"
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "J"
subchapter_name: "SUPERFUND, EMERGENCY PLANNING, AND COMMUNITY RIGHT-TO-KNOW PROGRAMS"
part_number: "355"
part_name: "EMERGENCY PLANNING AND NOTIFICATION"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
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 11049)."
regulatory_source: "73 FR 65462, Nov. 3, 2008, unless otherwise noted."
cfr_part: "355"
---


# 355.33 What release quantities of EHSs and CERCLA hazardous substances trigger the emergency release notification requirements of this subpart?

The release of a reportable quantity (RQ) of an EHS or CERCLA hazardous substance within any 24-hour period triggers the emergency release notification requirements. RQs for EHSs are listed in Appendices A and B of this part in the column labeled “reportable quantity.” RQs for CERCLA hazardous substances are listed in Table 302.4 of 40 CFR 302.4 in the column labeled “final RQ.”