[Code of Federal Regulations] [Title 40, Volume 28] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR413.60] [Page 215] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 413_ELECTROPLATING POINT SOURCE CATEGORY--Table of Contents Subpart F_Chemical Etching and Milling Subcategory Sec. 413.60 Applicability: Description of the chemical etching and milling subcategory. The provisions of this subpart apply to discharges of process wastewaters resulting from the chemical milling or etching of ferrous or nonferrous materials.