This regulation limits the pollutants that electroplating/metal finishing facilities may discharge to waters of the United States or to publicly owned treatment works (POTW). The Metal Finishing Regulations provide effluent limitations based on best practicable technology and best available technology and establish new source performance standards and pretreatment standards under the Clean Water Act. In addition, this rule amends the pretreatment standards for existing sources for the Electroplating Point Source Category. The preamble summarizes the legal authority, background, technical and economic bases, and other aspects of the regulation as well as a summary of comments on the proposed regulation as well as a summary of comments on the proposed regulation and on the record supporting the proposed regulation.