[Code of Federal Regulations] [Title 40, Volume 27] [Revised as ofJuly 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR461.20] [Page 523] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 461--BATTERY MANUFACTURING POINT SOURCE CATEGORY--Table of Contents Subpart B--Calcium Subcategory Sec. 461.20 Applicability; description of the calcium subcategory. This subpart applies to discharges to waters of the United States and introductions of pollutants into publicly owned treatment works from manufacturing calcium anode batteries.