40 CFR § 51.262 - Extension beyond one year.

---
identifier: "/us/cfr/t40/s51.262"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 51.262 - Extension beyond one year."
title_number: 40
title_name: "Protection of Environment"
section_number: "51.262"
section_name: "Extension beyond one year."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "51"
part_name: "REQUIREMENTS FOR PREPARATION, ADOPTION, AND SUBMITTAL OF IMPLEMENTATION PLANS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "23 U.S.C. 101; 42 U.S.C. 7401-7671q."
regulatory_source: "36 FR 22398, Nov. 25, 1971, unless otherwise noted."
cfr_part: "51"
---


# 51.262 Extension beyond one year.

(a) Any compliance schedule or revision of it extending over a period of more than one year from the date of its adoption by the State agency must provide for legally enforceable increments of progress toward compliance by each affected source or category of sources. The increments of progress must include—

(1) Each increment of progress specified in § 51.100(q); and

(2) Additional increments of progress as may be necessary to permit close and effective supervision of progress toward timely compliance.

(b) [Reserved]