42 USC § 7511e - Transitional areas

---
identifier: "/us/usc/t42/s7511e"
source: "usc"
legal_status: "official_prima_facie"
title: "42 USC § 7511e - Transitional areas"
title_number: 42
title_name: "THE PUBLIC HEALTH AND WELFARE"
section_number: "7511e"
section_name: "Transitional areas"
chapter_number: 85
chapter_name: "AIR POLLUTION PREVENTION AND CONTROL"
subchapter_number: "I"
subchapter_name: "PROGRAMS AND ACTIVITIES"
part_number: "D"
part_name: "Plan Requirements for Nonattainment Areas"
positive_law: false
currency: "119-84"
last_updated: "2026-04-17"
format_version: "1.1.0"
generator: "[email protected]"
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.)"
---


# § 7511e. Transitional areas

November 15, 1990January 1, 1987December 31, 1989December 31, 1991June 30, 1992December 31, 1991June 30, 1992section 7407(d)(4) of this title

If an area designated as an ozone nonattainment area as of , has not violated the national primary ambient air quality standard for ozone for the 36-month period commencing on , and ending on , the Administrator shall suspend the application of the requirements of this subpart to such area until . By , the Administrator shall determine by order, based on the area’s design value as of the attainment date, whether the area attained such standard by . If the Administrator determines that the area attained the standard, the Administrator shall require, as part of the order, the State to submit a maintenance plan for the area within 12 months of such determination. If the Administrator determines that the area failed to attain the standard, the Administrator shall, by , designate the area as nonattainment under .

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**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.)