---
kind: "section"
citation: "42 U.S.C. § 7511e"
title: "42"
title_heading: "The Public Health and Welfare"
number: "7511e"
heading: "Transitional areas"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/42/7511e"
units:
  - "Chapter 85 — Air Pollution Prevention and Control"
  - "Subchapter I — Programs and Activities"
  - "Part D — Plan Requirements for Nonattainment Areas"
  - "Subpart 2 — additional provisions for ozone nonattainment areas"
---

# §7511e. Transitional areas


If an area designated as an ozone [nonattainment area](/usc/42/7501.md?p=2) as of November 15, 1990, has not violated the national primary ambient air quality standard for ozone for the 36-month period commencing on January 1, 1987, and ending on December 31, 1989, the [Administrator](/usc/42/7602.md?p=a) shall suspend the application of the requirements of this subpart to such area until December 31, 1991. By June 30, 1992, the [Administrator](/usc/42/7602.md?p=a) shall determine by order, based on the area’s design value as of the attainment date, whether the area attained such standard by December 31, 1991. If the [Administrator](/usc/42/7602.md?p=a) determines that the area attained the standard, the [Administrator](/usc/42/7602.md?p=a) shall require, as part of the order, the [State](/usc/42/7602.md?p=d) to submit a maintenance plan for the area within 12 months of such determination. If the [Administrator](/usc/42/7602.md?p=a) determines that the area failed to attain the standard, the [Administrator](/usc/42/7602.md?p=a) shall, by June 30, 1992, designate the area as nonattainment under [section 7407(d)(4) of this title](/usc/42/7407.md?p=d-4).


## Source credit

(July 14, 1955, ch. 360, title I, § 185A, as added Pub. L. 101–549, title I, § 103, Nov. 15, 1990, 104 Stat. 2451.)