View all text of Subpart 1 [§ 7501 - § 7509a]
§ 7505a. Maintenance plans
(a) Plan revision
(b) Subsequent plan revisions
(c) Nonattainment requirements applicable pending plan approval
(d) Contingency provisions
(July 14, 1955, ch. 360, title I, § 175A, as added Pub. L. 101–549, title I, § 102(e), Nov. 15, 1990, 104 Stat. 2418.)