[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: 40CFR405.40] [Page 64] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 405_DAIRY PRODUCTS PROCESSING POINT SOURCE CATEGORY--Table of Contents Subpart D_Butter Subcategory Sec. 405.40 Applicability; description of the butter subcategory. The provisions of this subpart are applicable to discharges resulting from the manufacture of butter, either by churning or continuous process.