CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 409—SUGAR PROCESSING POINT SOURCE CATEGORY > SUBPART B—Crystalline Cane Sugar Refining Subcategory (§409.20 to §409.27) > 409.20—Applicability; description of the crystalline cane sugar refining subcategory.