40 CFR § 97.220 - General CAIR SO Trading Program permit requirements.
---
identifier: "/us/cfr/t40/s97.220"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 97.220 - General CAIR SO Trading Program permit requirements."
title_number: 40
title_name: "Protection of Environment"
section_number: "97.220"
section_name: "General CAIR SO Trading Program permit requirements."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "97"
part_name: "FEDERAL NOX BUDGET TRADING PROGRAM, CAIR NOX AND SO2 TRADING PROGRAMS, CSAPR NOX AND SO2 TRADING PROGRAMS, AND TEXAS SO2 TRADING PROGRAM"
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, 7403, 7410, 7426, 7491, 7601, and 7651,"
regulatory_source: "65 FR 2727, Jan. 18, 2000, unless otherwise noted. 71 FR 25396, 25422, and 25443, Apr. 28, 2006"
cfr_part: "97"
---
# 97.220 General CAIR SO Trading Program permit requirements.
(a) For each CAIR SO<sub>2</sub> source required to have a title V operating permit or required, under subpart III of this part, to have a title V operating permit or other federally enforceable permit, such permit shall include a CAIR permit administered by the permitting authority for the title V operating permit or the federally enforceable permit as applicable. The CAIR portion of the title V permit or other federally enforceable permit as applicable shall be administered in accordance with the permitting authority's title V operating permits regulations promulgated under part 70 or 71 of this chapter or the permitting authority's regulations for other federally enforceable permits as applicable, except as provided otherwise by § 97.205, this subpart, and subpart III of this part.
(b) Each CAIR permit shall contain, with regard to the CAIR SO<sub>2</sub> source and the CAIR SO<sub>2</sub> units at the source covered by the CAIR permit, all applicable CAIR SO<sub>2</sub> Trading Program, CAIR NO<sub>X</sub> Annual Trading Program, and CAIR NO<sub>X</sub> Ozone Season Trading Program requirements and shall be a complete and separable portion of the title V operating permit or other federally enforceable permit under paragraph (a) of this section.