CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 417—SOAP AND DETERGENT MANUFACTURING POINT SOURCE CATEGORY > SUBPART L—Sulfamic Acid Sulfation Subcategory (§417.120 to §417.126) > 417.120—Applicability; description of the sulfamic acid sulfation subcategory.