40 CFR § 51.260 - Legally enforceable compliance schedules.

---
identifier: "/us/cfr/t40/s51.260"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 51.260 - Legally enforceable compliance schedules."
title_number: 40
title_name: "Protection of Environment"
section_number: "51.260"
section_name: "Legally enforceable compliance schedules."
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"
---


# 51.260 Legally enforceable compliance schedules.

(a) Each plan shall contain legally enforceable compliance schedules setting forth the dates by which all stationary and mobile sources or categories of such sources must be in compliance with any applicable requirement of the plan.

(b) The compliance schedules must contain increments of progress required by § 51.262 of this subpart.