Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 257 - Aluminum forming
Section NR 257.02 - Applicability

(1) This chapter applies to any aluminum forming facility which discharges or may discharge pollutants to waters of the state or which introduces or may introduce pollutants into a publicly owned treatment works.

(2) This chapter applies to chemical or electrochemical treatments applied to the surface of the aluminum when these surface treatments are performed at [the] aluminum forming site. When these surface treatments are not performed at the aluminum forming site, regulations for electroplating, ch. NR 260, or metal finishing, ch. NR 261, apply.

(3) This chapter applies to aluminum casting when the casting is performed as an integral part of aluminum forming and is located at the aluminum forming site. When aluminum forming is performed on the same site as primary aluminum reduction, this chapter applies if the aluminum cools prior to casting. If the aluminum does not cool prior to casting, the regulations for nonferrous metals manufacturing, ch. NR 274, apply.