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