Section 97.253 - Recordation of CAIR SO[2] 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 SO2 allowance allocated to any CAIR SO2 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 SO2 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 SO2 allowance allocated to any CAIR SO2 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 SO2 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 SO2 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 SO2 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 SO2allowances. When recording the allocation of CAIR SO2 allowances issued by a permitting authority under § 97.288 , the Administrator will assign each such CAIR SO2 allowance a unique identification number that will include digits identifying the year of the control period for which the CAIR SO2 allowance is allocated.