40 CFR § 97.253 - Recordation of CAIR SO allowances.
---
identifier: "/us/cfr/t40/s97.253"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 97.253 - Recordation of CAIR SO allowances."
title_number: 40
title_name: "Protection of Environment"
section_number: "97.253"
section_name: "Recordation of CAIR SO allowances."
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"
---
# 97.253 Recordation of CAIR SO allowances.
(a)(1) After a compliance account is established under § 97.251(a) or § 73.31(a) or (b) of this chapter, the Administrator will record in the compliance account any CAIR SO<sub>2</sub> allowance allocated to any CAIR SO<sub>2</sub> unit at the source for each of the 30 years starting the later of 2010 or the year in which the compliance account is established and any CAIR SO<sub>2</sub> allowance allocated for each of the 30 years starting the later of 2010 or the year in which the compliance account is established and transferred to the source in accordance with subpart GGG of this part or subpart D of part 73 of this chapter.
(2) In 2011 and each year thereafter, after Administrator has completed all deductions under § 97.254(b), the Administrator will record in the compliance account any CAIR SO<sub>2</sub> allowance allocated to any CAIR SO<sub>2</sub> unit at the source for the new 30th year (*i.e.,* the year that is 30 years after the calendar year for which such deductions are or could be made) and any CAIR SO<sub>2</sub> allowance allocated for the new 30th year and transferred to the source in accordance with subpart GGG of this part or subpart D of part 73 of this chapter.
(b)(1) After a general account is established under § 97.251(b) or § 73.31(c) of this chapter, the Administrator will record in the general account any CAIR SO<sub>2</sub> allowance allocated for each of the 30 years starting the later of 2010 or the year in which the general account is established and transferred to the general account in accordance with subpart GGG of this part or subpart D of part 73 of this chapter.
(2) In 2011 and each year thereafter, after Administrator has completed all deductions under § 97.254(b), the Administrator will record in the general account any CAIR SO<sub>2</sub> allowance allocated for the new 30th year (*i.e.,* the year that is 30 years after the calendar year for which such deductions are or could be made) and transferred to the general account in accordance with subpart GGG of this part or subpart D of part 73 of this chapter.
(c) *Serial numbers for allocated CAIR SO*<sub>2</sub> *allowances.* When recording the allocation of CAIR SO<sub>2</sub> allowances issued by a permitting authority under § 97.288, the Administrator will assign each such CAIR SO<sub>2</sub> allowance a unique identification number that will include digits identifying the year of the control period for which the CAIR SO<sub>2</sub> allowance is allocated.