Title 40-Protection of Environment is composed of thirty two volumes. The parts in these volumes are arranged in the following order: parts 1-49, parts 50-51, part 52 (52.01-52.1018), part 52 (52.1019-End), parts 53-59, part 60 (60.1-End), part 60 (Appendices), parts 61-62, part 63 (63.1-63.599), part 63 (63.600-1-63.1199), part 63 (63.1200-1439), part 63 (63.1400 to 6175), part 63.6580 63.8830), part 63.8980-end), parts 64-71, parts 72-80, parts 81-85, part 86 (86.1-86.599-99) part 86 (86.600-1-End), parts 87-99, parts 100-135, parts 136-149, parts 150-189, parts 190-259, parts 260-265, parts 266-299, parts 300-399, parts 400-424, parts 425-699, parts 700-789, parts 790-999 and 1000 to End.
The contents of these volumes represent all current regulations codified under this title of the CFR as of July 1 Annually.