CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 406—GRAIN MILLS POINT SOURCE CATEGORY > SUBPART F—Parboiled Rice Processing Subcategory (§406.60 to §406.67) > 406.60—Applicability; description of the parboiled rice processing subcategory.