Recordation of NO X allowance allocations.

(a) The Administrator will record the NO X allowances for 2003 in the NO X Budget units' compliance accounts and the allocation set-asides, as allocated under subpart E of this part. The Administrator will also record the NO X allowances allocated under § 96.88(a)(1) for each NO X Budget opt-in source in its compliance account. (b) Each year, after the Administrator has made all deductions from a NO X Budget unit's compliance account and the overdraft account pursuant to § 96.54, the Administrator will record NO X allowances, as allocated to the unit under subpart E of this part or under § 96.88(a)(2), in the compliance account for the year after the last year for which allowances were previously allocated to the compliance account. Each year, the Administrator will also record NO X allowances, as allocated under subpart E of this part, in the allocation set-aside for the year after the last year for which allowances were previously allocated to an allocation set-aside. (c) Serial numbers for allocated NO X allowances. When allocating NO X allowances to and recording them in an account, the Administrator will assign each NO X allowance a unique identification number that will include digits identifying the year for which the NO X allowance is allocated.