This subchapter applies to the discharge of pollutants to waters of the state and the introduction of pollutants into POTWs from the production of zirconium or hafnium at primary zirconium and hafnium facilities except for facilities which only produce zirconium or zirconium/nickel alloys by magnesium reduction of zirconium dioxide.
Wis. Admin. Code Department of Natural Resources NR 274.33