International border areas
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(a) Implementation plans and revisionsNotwithstanding any other provision of law, an implementation plan or plan revision required under this chapter shall be approved by the Administrator if—
(1)
such plan or revision meets all the requirements applicable to it under the [1] chapter other than a requirement that such plan or revision demonstrate attainment and maintenance of the relevant national ambient air quality standards by the attainment date specified under the applicable provision of this chapter, or in a regulation promulgated under such provision, and