40 CFR § 63.217 - What definitions apply to this subpart?
---
identifier: "/us/cfr/t40/s63.217"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 63.217 - What definitions apply to this subpart?"
title_number: 40
title_name: "Protection of Environment"
section_number: "63.217"
section_name: "What definitions apply to this subpart?"
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "63"
part_name: "NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401"
regulatory_source: "57 FR 61992, Dec. 29, 1992, unless otherwise noted."
cfr_part: "63"
---
# 63.217 What definitions apply to this subpart?
Terms used in this subpart are defined in the Clean Air Act; 40 CFR 61.02 of this chapter, the NESHAP General Provisions; 40 CFR 61.61 of this chapter, the Vinyl Chloride NESHAP; and, § 63.2, in regard to terms used in §§ 63.1 and 63.5.