StacksVerified U.S. regulatory reference

40 CFR §413.20

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
The provisions of this subpart apply to discharges of process wastewaters resulting from the process in which a ferrous or nonferrous basis material is plated with gold, silver, iridium, palladium, platinum, rhodium, rutheniun, or any combination of these.