[Code of Federal Regulations] [Title 40, Volume 26] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR421.30] [Page 471] TITLE 40-PROTECTION OF ENVIRONMENT CHAPTER I-ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 421-NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY--Table of Contents Subpart C-Secondary Aluminum Smelting Subcategory Sec. 421.30 Applicability: Description of the secondary aluminum smelting subcategory. Source: 49 FR 8796, Mar. 8, 1984, unless otherwise noted. The provisions of this subpart are applicable to discharges resulting from the recovery, processing, and remelting of aluminum scrap to produce metallic aluminum alloys.