[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: 40CFR418.60] [Page 350] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 418_FERTILIZER MANUFACTURING POINT SOURCE CATEGORY--Table of Contents Subpart F_Ammonium Sulfate Production Subcategory Sec. 418.60 Applicability; description of the ammonium sulfate production subcategory. Source: 40 FR 2652, Jan. 14, 1975, unless otherwise noted. The provisions of this subpart apply to discharges resulting from the production of ammonium sulfate by the synthetic process and by coke oven by-product recovery. The provisions of this subpart do not apply to ammonium sulfate produced as a by-product of caprolactam production.