[Code of Federal Regulations] [Title 40, Volume 27] [Revised as ofJuly 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR426.21] [Page 30] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 426--GLASS MANUFACTURING POINT SOURCE CATEGORY--Table of Contents Subpart B--Sheet Glass Manufacturing Subcategory Sec. 426.21 Specialized definitions. For the purpose of this subpart: (a) Except as provided below, the general definitions, abbreviations and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart. (b) The term ``cullet'' shall mean any broken glass generated in the manufacturing process.