CFR › Title 40 › Part 52 › §52.152740 CFR §52.1527Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)[Reserved](b)The following elements are not part of the approved SIP:(1)Intergovernmental consultations(2)Public notification(3)Conflict of Interest(4)Non-SIP regulations' numbers listed below: