[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: 40CFR413.41] [Page 211] TITLE 40-PROTECTION OF ENVIRONMENT CHAPTER I-ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 413-ELECTROPLATING POINT SOURCE CATEGORY--Table of Contents Subpart D-Anodizing Subcategory Sec. 413.41 Specialized definitions. For the purpose of this subpart: (a) The term sq m (``sq ft'') shall mean the area plated expressed in square meters (square feet). (b) The term operation shall mean any step in the anodizing process in which a metal is cleaned, anodized, or colored when each such step is followed by a rinse.