40 CFR § 74.24 - Current allowable SO emissions rate.

---
identifier: "/us/cfr/t40/s74.24"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 74.24 - Current allowable SO emissions rate."
title_number: 40
title_name: "Protection of Environment"
section_number: "74.24"
section_name: "Current allowable SO emissions rate."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "74"
part_name: "SULFUR DIOXIDE OPT-INS"
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. 7601 and 7651"
regulatory_source: "60 FR 17115, Apr. 4, 1995, unless otherwise noted."
cfr_part: "74"
---


# 74.24 Current allowable SO emissions rate.

The designated representative shall submit the following data:

(a) Current allowable SO<sub>2</sub> emissions rate of the combustion source, expressed in lbs/mmBtu, which shall be the most stringent federally enforceable emissions limit in effect as of the date of submission of the opt-in application. If the allowable SO<sub>2</sub> emissions rate is not expressed in lbs/mmBtu, the allowable emissions rate shall be converted to lbs/mmBtu by multiplying the allowable rate by the appropriate factor as specified in Table 1 in § 74.23(a)(1)(i).

(b) Citations of statute, regulation, and any other authority under which the allowable emissions rate under paragraph (a) of this section is established as applicable to the combustion source;

(c) Averaging time associated with the allowable emissions rate under paragraph (a) of this section.