U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
The provisions of this subpart apply to discharges of process wastewaters resulting from the chemical milling or etching of ferrous or nonferrous materials.
Regulations most recently checked for updates: Aug 27, 2025
The provisions of this subpart apply to discharges of process wastewaters resulting from the chemical milling or etching of ferrous or nonferrous materials.