40 CFR § 97.826
Banking
June 9, 2020
(a) A CSAPR NOX Ozone Season Group 2 allowance may be banked for future use or transfer in a compliance account or a general account in accordance with paragraph (b) of this section.
(b) Any CSAPR NOX Ozone Season Group 2 allowance that is held in a compliance account or a general account will remain in such account unless and until the CSAPR NOX Ozone Season Group 2 allowance is deducted or transferred under §97.811(c), §97.823, §97.824, §97.825, §97.827, or §97.828.