[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: 40CFR406.70] [Page 88] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 406_GRAIN MILLS POINT SOURCE CATEGORY--Table of Contents Subpart G_Animal Feed Subcategory Sec. 406.70 Applicability; description of the animal feed subcategory. Source: 40 FR 918, Jan. 3, 1975, unless otherwise noted. The provisions of this subpart are applicable to discharges resulting from the manufacturing of animal feeds (formula feed concentrate) using primarily grain and grain by-products which may be supplemented by proteins, pharmaceuticals, vitamins or mineral additives.