40 CFR § 62.4621 - Emission standards and compliance schedules.

---
identifier: "/us/cfr/t40/s62.4621"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 62.4621 - Emission standards and compliance schedules."
title_number: 40
title_name: "Protection of Environment"
section_number: "62.4621"
section_name: "Emission standards and compliance schedules."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "62"
part_name: "APPROVAL AND PROMULGATION OF STATE PLANS FOR DESIGNATED FACILITIES AND POLLUTANTS"
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: "43 FR 51393, Nov. 3, 1978, unless otherwise noted."
cfr_part: "62"
---


# 62.4621 Emission standards and compliance schedules.

(a) The requirements of § 60.24(b)(2) of this chapter are not met since the test methods and procedures for determining compliance with the sulfuric acid mist emission standards are not specified.

(b) Emissions from sulfuric acid plants must be measured by the methods in appendix A to part 60, or by equivalent or alternative methods as defined in § 60.2 (t) and (u) respectively.