40 CFR § 124.211 - What types of changes may I make to my standardized permit?
---
identifier: "/us/cfr/t40/s124.211"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 124.211 - What types of changes may I make to my standardized permit?"
title_number: 40
title_name: "Protection of Environment"
section_number: "124.211"
section_name: "What types of changes may I make to my standardized permit?"
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "D"
subchapter_name: "WATER PROGRAMS"
part_number: "124"
part_name: "PROCEDURES FOR DECISIONMAKING"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Resource Conservation and Recovery Act, 42 U.S.C. 6901 Safe Drinking Water Act, 42 U.S.C. 300f Clean Water Act, 33 U.S.C. 1251 Clean Air Act, 42 U.S.C. 7401"
regulatory_source: "48 FR 14264, Apr. 1, 1983, unless otherwise noted."
cfr_part: "124"
---
# 124.211 What types of changes may I make to my standardized permit?
You may make both routine changes, routine changes with prior Agency approval, and significant changes. For the purposes of this section:
(a) “Routine changes” are any changes to the standardized permit that qualify as a class 1 permit modification (without prior Agency approval) under 40 CFR 270.42, appendix I, and
(b) “Routine changes with prior Agency approval” are for those changes to the standardized permit that would qualify as a class 1 modification with prior agency approval, or a class 2 permit modification under 40 CFR 270.42, appendix I; and
(c) “Significant changes” are any changes to the standardized permit that:
(1) Qualify as a class 3 permit modification under 40 CFR 270.42, appendix I;
(2) Are not explicitly identified in 40 CFR 270.42, appendix I; or
(3) Amend any terms or conditions in the supplemental portion of your standardized permit.