[Code of Federal Regulations] [Title 40, Volume 29] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR426.40] [Page 32] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 426_GLASS MANUFACTURING POINT SOURCE CATEGORY--Table of Contents Subpart D_Plate Glass Manufacturing Subcategory Sec. 426.40 Applicability; description of the plate glass manufacturing subcategory. Source: 39 FR 5714, Feb. 14, 1974, unless otherwise noted. The provisions of this subpart are applicable to discharges of pollutants resulting from the process in which several mineral ingredients (sand, soda ash, limestone, dolomite, cullet and other ingredients) are melted in a furnace, pressed between rollers, and finally ground and polished to form plate glass.