40 CFR 1043.5 - Effective dates.
(c) Compliance with the applicable regulations of this part is required for all persons as of July 1, 2010. (Note that certain requirements begin later, as described in paragraph (d) of this section.) Note also that compliance with §§ 1043.40 and 1043.41 is required to obtain EIAPP certificates under this part whether the application is submitted before July 1, 2010 or later.
(d) Compliance with the requirements related to ECAs are effective as follows:
(2) Compliance with the fuel content requirements applicable within ECAs and ECA associated areas (see § 1043.60(b)) is required beginning 12 months after date on which the ECA enters into force for the United States under Annex VI.