[Code of Federal Regulations] [Title 40, Volume 26] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR415.50] [Page 253] TITLE 40-PROTECTION OF ENVIRONMENT CHAPTER I-ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 415-INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY--Table of Contents Subpart E-Calcium Oxide Production Subcategory Sec. 415.50 Applicability; description of the calcium oxide production subcategory. The provisions of this subpart are applicable to discharges resulting from the production of calcium oxide.