[Code of Federal Regulations] [Title 40, Volume 28] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR420.47] [Page 405] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 420_IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY--Table of Contents Subpart D_Steelmaking Subcategory Sec. 420.47 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT). (a) Electric arc furnace steelmaking--semi-wet. No discharge of process wastewater pollutants to navigable waters. (b) Basic oxygen furnace steelmaking--wet-suppressed combustion. [Reserved] (c) Basic oxygen furnace steelmaking--wet--open combustion; electric arc furnace steelmaking--wet. [Reserved] (d) Basic oxygen furnace steelmaking--semi-wet. (1) No discharge of process wastewater pollutants to navigable waters. (2) If the permittee demonstrates to the satisfaction of the permitting authority that safety considerations prevent attainment of these limitations, the permitting authority may establish alternative limitations on a best professional judgment basis. [47 FR 23284, May 27, 1982, as amended at 67 FR 64268, Oct. 17, 2002]