40 CFR 413.21 - Specialized definitions.
For the purpose of this subpart:
(b) The term operation shall mean any step in the electroplating process in which a metal is electrodeposited on a basis material and which is followed by a rinse: This includes the related operations of alkaline cleaning, acid pickle, stripping, and coloring when each operation is followed by a rinse.
Title 40 published on 2013-07-01
no entries appear in the Federal Register after this date.