[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: 40CFR418.20] [Page 343] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 418_FERTILIZER MANUFACTURING POINT SOURCE CATEGORY--Table of Contents Subpart B_Ammonia Subcategory Sec. 418.20 Applicability; description of the ammonia subcategory. The provisions of this subpart are applicable to discharges resulting from the manufacture of ammonia. Discharges attributable to shipping losses and cooling tower blowdown are excluded. [44 FR 64081, Nov. 6, 1979]