; (3) ensure prompt review and approval of submitted early action compact plans; (4) in a case in which the Administrator denies a submitted early action compact plan, provide an explanation of the reason for denying the submitted early action compact plan; (5) in the case of the failure of an area subject to an early action compact plan to achieve attainment status during the period for which the plan is in effect, defer designation of the area as a nonattainment area until the expiration of that period if the area continues to meet the terms of the plan, including any milestones established by the plan; (6) expeditiously designate an area as an attainment area and impose no additional requirements other than the post-attainment plan if area monitors reflect attainment by not later than the early action compact plan attainment date; and (7) in the case of the failure of a participating area to comply with the Early Action Compact Program— (A) withdraw approval under this Act of the early action compact plan of the area; but (B) provide reasonable opportunities for the area to cure deficiencies before withdrawing that approval. 6. Winter ozone provisions (a) In general For each early action compact plan under this Act, the Administrator shall establish requirements relating to winter ozone levels, including timelines, that are separate from, but not more burdensome than, the requirements otherwise established under this Act. (b) Regulations (1) In general The Administrator shall promulgate regulations— (A) to carry out the Early Action Compact Program