[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: 40CFR461.72] [Page 537-539] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 461_BATTERY MANUFACTURING POINT SOURCE CATEGORY --Table of Contents Subpart G_Zinc Subcategory Sec. 461.72 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). (a) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable: (1) Subpart G--Wet Amalgamated Powder Anodes. BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of Zinc English units--pounds per 1,000,000 pounds of Zinc -------------------------- Chromium..................................... 0.24 0.099 Mercury...................................... 0.14 0.055 Silver....................................... 0.23 0.093 Zinc......................................... 0.80 0.34 Manganese.................................... 0.37 0.16 ------------------------------------------------------------------------ (2) Subpart G--Gelled Amalgam Anodes. BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of Zinc English units--pounds per 1,000,000 pounds of Zinc ------------------------- Chromium...................................... 0.030 0.012 Mercury....................................... 0.017 0.007 Silver........................................ 0.028 0.012 Zinc.......................................... 0.099 0.042 Manganese..................................... 0.046 0.020 ------------------------------------------------------------------------ (3) Subpart G--Zinc Oxide Formed Anodes. [[Page 538]] BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of Zinc English units--pounds per 1,000,000 pounds of Zinc ------------------------- Chromium...................................... 9.53 3.90 Mercury....................................... 5.42 2.17 Silver........................................ 8.89 3.68 Zinc.......................................... 31.64 13.22 Manganese..................................... 14.74 6.28 ------------------------------------------------------------------------ (4) Subpart G--Electrodeposited Anodes. BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of zinc deposited English units--pounds per 1,000,000 pounds of zinc deposited ------------------------- Chromium...................................... 94.47 38.65 Mercury....................................... 53.68 21.47 Silver........................................ 88.03 36.50 Zinc.......................................... 313.46 130.97 Manganese..................................... 146.00 62.26 ------------------------------------------------------------------------ (5) Subpart G--Silver Powder Formed Cathodes. BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of silver applied English units--pounds per 1,000,000 pounds of silver applied ------------------------- Chromium...................................... 13.07 5.35 Mercury....................................... 7.43 2.97 Silver........................................ 12.18 5.05 Zinc.......................................... 43.36 18.12 Manganese..................................... 20.20 8.61 ------------------------------------------------------------------------ (6) Subpart G--Silver Oxide Powder Formed Cathodes. BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of silver applied English units--pounds per 1,000,000 pounds of silver applied ------------------------- Chromium...................................... 8.73 3.57 Mercury....................................... 4.96 1.99 Silver........................................ 8.14 3.37 Zinc.......................................... 28.98 12.11 Manganese..................................... 13.50 5.76 ------------------------------------------------------------------------ (7) Subpart G--Silver Peroxide Cathodes. BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of silver applied English units--pounds per 1,000,000 pounds of silver applied ------------------------- Chromium...................................... 2.09 0.87 Mercury....................................... 1.19 0.48 Silver........................................ 1.95 0.81 Zinc.......................................... 6.95 2.90 Manganese..................................... 3.24 1.38 ------------------------------------------------------------------------ (8) Subpart G--Nickel Impregnated Cathodes. BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of nickel applied English units--pounds per 1,000,000 pounds of nickel applied ------------------------- Chromium...................................... 88.0 36.0 Mercury....................................... 50.0 20.0 Nickel........................................ 384.0 254.0 Silver........................................ 82.0 34.0 Zinc.......................................... 292.0 122.0 Manganese..................................... 136.0 58.0 ------------------------------------------------------------------------ (9) Subpart G--Miscellaneous Wastewater Streams. [[Page 539]] BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of cells produced English units--pounds per 1,000,000 pounds of cells produced ------------------------- Chromium...................................... 0.57 0.23 Cyanide....................................... 0.38 0.16 Mercury....................................... 0.32 0.13 Nickel........................................ 2.48 1.64 Silver........................................ 0.53 0.22 Zinc.......................................... 1.88 0.79 Manganese..................................... 0.88 0.37 ------------------------------------------------------------------------ (10) Subpart G--Silver Etch. BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of silver processed English units--pounds per 1,000,000 pounds of silver processed ------------------------- Chromium...................................... 3.27 1.34 Mercury....................................... 1.86 0.74 Silver........................................ 3.05 1.26 Zinc.......................................... 10.86 4.54 Manganese..................................... 5.06 2.16 ------------------------------------------------------------------------ (11) Subpart G--Silver Peroxide Production. BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of silver peroxide produced English units--pounds per 1,000,000 pounds of silver peroxide produced ------------------------- Chromium...................................... 3.48 1.42 Mercury....................................... 1.98 0.79 Silver........................................ 3.24 1.34 Zinc.......................................... 11.55 4.83 Manganese..................................... 5.38 2.29 ------------------------------------------------------------------------ (12) Subpart G--Silver Powder Production. BAT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ Metric units--mg/kg of silver powder produced English units--pounds per 1,000,000 pounds of silver powder produced ------------------------- Chromium...................................... 1.41 0.58 Mercury....................................... 0.80 0.32 Silver........................................ 1.32 0.55 Zinc.......................................... 4.69 1.96 Manganese..................................... 2.18 0.93 ------------------------------------------------------------------------ (b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above. [49 FR 9134, Mar. 9, 1984; 49 FR 13879, Apr. 9, 1984]