Code of Federal Regulations (Last Updated: July 5, 2024) |
Title 40 - Protection of Environment |
Chapter I - Environmental Protection Agency |
SubChapter N - Effluent Guidelines and Standards |
Part 414 - Organic Chemicals, Plastics, and Synthetic Fibers |
Subpart I - Direct Discharge Point Sources That Use End-of-Pipe Biological Treatment |
§ 414.91 - Toxic pollutant effluent limitations and standards for direct discharge point sources that use end-of-pipe biological treatment.
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§ 414.91 Toxic pollutant effluent limitations and standards for direct discharge point sources that use end-of-pipe biological treatment.
(a) Any point source subject to this subpart must achieve discharges not exceeding the quantity (mass) determined by multiplying the process wastewater flow subject to this subpart times the concentrations in the following table.
(b) In the case of chromium, copper, lead, nickel, zinc, and total cyanide, the discharge quantity (mass) shall be determined by multiplying the concentrations listed in the following table for these pollutants times the flow from metal-bearing waste streams for the metals and times the flow from cyanide bearing waste streams for total cyanide. The metal-bearing waste streams and cyanide-bearing waste streams are defined as those waste streams listed in Appendix appendix A of this part, plus any additional OCPSF process wastewater streams identified by the permitting authority on a case-by-case basis as metal or cyanide bearing based upon a determination that such streams contain significant amounts of the pollutants identified above. Any such streams designated as metal or cyanide bearing must be treated independently of other metal or cyanide bearing waste streams unless the permitting authority determines that the combination of such streams, prior to treatment, with the Appendix appendix A waste streams will result in substantial reduction of these pollutants. This determination must be based upon a review of relevant engineering, production, and sampling and analysis information.
Effluent characteristics Effluent limitations BAT and NSPS1 Maximum for any one day Maximum for any monthly average Acenaphthene 59 22 Acenaphthylene 59 22 Acrylonitrile 242 96 Anthracene 59 22 Benzene 136 37 Benzo(a)anthracene 59 22 3,4-Benzofluoranthene 61 23 Benzo(k)fluoranthene 59 22 Benzo(a)pyrene 61 23 Bis(2-ethylhexyl) phthalate 279 103 Carbon Tetrachloride 38 18 Chlorobenzene 28 15 Chloroethane 268 104 Chloroform 46 21 2-Chlorophenol 98 31 Chrysene 59 22 Di-n-butyl phthalate 57 27 1,2-Dichlorobenzene 163 77 1,3-Dichlorobenzene 44 31 1,4-Dichlorobenzene 28 15 1,1-Dichloroethane 59 22 1,2-Dichloroethane 211 68 1,1-Dichloroethylene 25 16 1,2-trans-Dichloroethylene 54 21 2,4-Dichlorophenol 112 39 1,2-Dichloropropane 230 153 1,3-Dichloropropylene 44 29 Diethyl phthalate 203 81 2,4-Dimethylphenol 36 18 Dimethyl phthalate 47 19 4,6-Dinitro-o-cresol 277 78 2,4-Dinitrophenol 123 71 2,4-Dinitrotoluene 285 113 2,6-Dinitrotoluene 641 255 Ethylbenzene 108 32 Fluoranthene 68 25 Fluorene 59 22 Hexachlorobenzene 28 15 Hexachlorobutadiene 49 20 Hexachloroethane 54 21 Methyl Chloride 190 86 Methylene Chloride 89 40 Naphthalene 59 22 Nitrobenzene 68 27 2-Nitrophenol 69 41 4-Nitrophenol 124 72 Phenanthrene 59 22 Phenol 26 15 Pyrene 67 25 Tetrachloroethylene 56 22 Toluene 80 26 Total Chromium 2,770 1,110 Total Copper 3,380 1,450 Total Cyanide 1,200 420 Total Lead 690 320 Total Nickel 3,980 1,690 Total Zinc2 2,610 1,050 1,2,4-Trichlorobenzene 140 68 1,1,1-Trichloroethane 54 21 1,1,2-Trichloroethane 54 21 Trichloroethylene 54 21 Vinyl Chloride 268 104 [52 FR 42568, Nov. 5, 1987, as amended at 58 FR 36892, July 9, 1993]