StacksVerified U.S. regulatory reference

40 CFR §421.51

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
For the purpose of this subpart:
  1. (a)Except as provided below, the general definitions, abbreviations, and methods of analysis set forth in 40 CFR part 401 apply to this subpart.
  2. (b)The term product means electrolytically refined copper.