[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: 40CFR414.90] [Page 235] TITLE 40-PROTECTION OF ENVIRONMENT CHAPTER I-ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 414-ORGANIC CHEMICALS, PLASTICS, AND SYNTHETIC FIBERS--Table of Contents Subpart I-Direct Discharge Point Sources That Use End-of-Pipe Biological Treatment Sec. 414.90 Applicability; description of the subcategory of direct discharge point sources that use end-of-pipe biological treatment. The provisions of this subpart are applicable to the process wastewater discharges resulting from the manufacture of the OCPSF products and product groups defined by Sec. 414.11 from any point source that uses end-of-pipe biological treatment or installs end- of-pipe biological treatment to comply with BPT effluent limitations.