[Code of Federal Regulations] [Title 40, Volume 29] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR464.30] [Page 571] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 464_METAL MOLDING AND CASTING POINT SOURCE CATEGORY --Table of Contents Subpart C_Ferrous Casting Subcategory Sec. 464.30 Applicability; description of the ferrous casting subcategory. The provisions of this subpart are applicable to discharges to waters of the United States and to the introduction of pollutants into publicly owned treatment works resulting from ferrous casting operations as defined in Sec. 464.02(c).