part_subject: "REQUIREMENTS FOR PREPARATION, ADOPTION, AND SUBMITTAL OF IMPLEMENTATION PLANS"
subpart_code: "F"
subpart_subject: "Procedural Requirements"
section_number: "51.104"
section_subject: "Revisions."
cfr_reference: "40 CFR 51.104"
title_name: "Title 40"
title_subject: "Protection of Environment"
parts_covered: "Parts 50 to 51"
revised_date: "Revised as of July 1, 2019"
publication_date: "As of July 1, 2019"
contains_description: "Containing a codification of documents of general applicability and future effect"
publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"
---
(a)States may revise the plan from time to time consistent with the requirements applicable to implementation plans under this part.
(b)The States must submit any revision of any regulation or any compliance schedule under paragraph (c) of this section to the Administrator no later than 60 days after its adoption.
(c)EPA will approve revisions only after applicable hearing requirements of § 51.102 have been satisfied.
(d)In order for a variance to be considered for approval as a revision to the State implementation plan, the State must submit it in accordance with the requirements of this section.