Cite as: 531 U. S. 457 (2001)
Opinion of the Court
when the agency, "in light of [these comments]," and in conjunction with a corresponding directive from the White House, adopted the interpretation of Part D at issue here. Since that interpretation issued, the EPA has refused in subsequent rulemakings to reconsider it, explaining to disappointed commenters that its earlier decision was conclusive. See 63 Fed. Reg. 31014, 31018-31019 (1998). Though the agency has not dressed its decision with the conventional procedural accoutrements of finality, its own behavior thus belies the claim that its interpretation is not final.
The decision is also ripe for our review. "Ripeness 'requir[es] us to evaluate both the fitness of the issues for judicial decision and the hardship to the parties of withholding court consideration.' " Texas v. United States, 523 U. S. 296, 300-301 (1998) (quoting Abbott Laboratories v. Gardner, 387 U. S. 136, 149 (1967)). The question before us here is purely one of statutory interpretation that would not "benefit from further factual development of the issues presented." Ohio Forestry Assn., Inc. v. Sierra Club, 523 U. S. 726, 733 (1998). Nor will our review "inappropriately interfere with further administrative action," ibid., since the EPA has concluded its consideration of the implementation issue. Finally, as for hardship to the parties: The respondent States must—on pain of forfeiting to the EPA control over implementation of the NAAQS—promptly undertake the lengthy and expensive task of developing state implementation plans (SIP's) that will attain the new, more stringent standard within five years. See 42 U. S. C. §§ 7410, 7502. Whether or not this would suffice in an ordinary case brought under the review provisions of the APA, see 5 U. S. C. § 704, we have characterized the special judicial-review provision of the CAA, 42 U. S. C. § 7607(b), as one of those statutes that specifically provides for "preenforcement" review, see Ohio Forestry Assn., Inc. v. Sierra Club, supra, at 737. Such statutes, we have said, permit "judicial review directly, even before the
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