[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: 40CFR451.23] [Page 464-465] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 451_CONCENTRATED AQUATIC ANIMAL PRODUCTION POINT SOURCE CATEGORY--Table of Contents Subpart B_Net Pen Subcategory Sec. 451.23 Effluent limitations attainable by the application of the best conventional technology (BCT). Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must [[Page 465]] achieve the following effluent limitations representing the application of BCT: The limitations are the same as the limitations specified in Sec. 451.21.