[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: 40CFR471.44] [Page 731-733] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 471_NONFERROUS METALS FORMING AND METAL POWDERS POINT SOURCE CATEGORY--Table of Contents Subpart D_Precious Metals Forming Subcategory Sec. 471.44 Pretreatment standards for existing sources (PSES). Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and by August 23, 1985 achieve the following pretreatment standards for existing sources (PSES). The mass of wastewater pollutants in precious metals forming process wastewater introduced into a POTW shall not exceed the following values: (a) Rolling spent neat oils--Subpart D--PSES. There shall be no discharge of process wastewater pollutants. (b) Rolling spent emulsions. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals rolled with emulsions --------------------------- Cadmium..................................... 0.026 0.012 Copper...................................... 0.147 0.077 Cyanide..................................... 0.023 0.010 Silver...................................... 0.032 0.013 ------------------------------------------------------------------------ (c) Drawing spent neat oils--Subpart D--PSES. There shall be no discharge of process wastewater pollutants. (d) Drawing spent emulsions. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals drawn with emulsions --------------------------- Cadmium..................................... 0.016 0.007 Copper...................................... 0.091 0.048 Cyanide..................................... 0.014 0.006 Silver...................................... 0.020 0.008 ------------------------------------------------------------------------ (e) Drawing spent soap solutions. [[Page 732]] Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals drawn with soap solutions --------------------------- Cadmium..................................... 0.001 0.0005 Copper...................................... 0.006 0.003 Cyanide..................................... 0.0009 0.0004 Silver...................................... 0.002 0.0006 ------------------------------------------------------------------------ (f) Metal powder production atomization wastewater. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals powder wet atomized --------------------------- Cadmium..................................... 2.27 1.00 Copper...................................... 12.7 6.68 Cyanide..................................... 1.94 0.802 Silver...................................... 2.74 1.14 ------------------------------------------------------------------------ (g) Heat treatment contact cooling water. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals heat treated --------------------------- Cadmium..................................... 0.142 0.063 Copper...................................... 0.793 0.417 Cyanide..................................... 0.121 0.050 Silver...................................... 0.171 0.071 ------------------------------------------------------------------------ (h) Semi-continuous and continuous casting contact cooling water. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals cast by the semi-continuous or continuous method --------------------------- Cadmium..................................... 0.350 0.155 Copper...................................... 1.96 1.03 Cyanide..................................... 0.299 0.124 Silver...................................... 0.423 0.175 ------------------------------------------------------------------------ (i) Stationary casting contact cooling water--Subpart D--PSES. There shall be no discharge of process wastewater pollutants. (j) Direct chill casting contact cooling water. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any one day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals cast by the direct chill method --------------------------- Cadmium..................................... 0.367 0.162 Copper...................................... 2.05 1.08 Cyanide..................................... 0.313 0.130 Silver...................................... 0.443 0.184 ------------------------------------------------------------------------ (k) Shot casting contact cooling water. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals shot cast --------------------------- Cadmium..................................... 0.125 0.055 Copper...................................... 0.698 0.367 Cyanide..................................... 0.107 0.044 Silver...................................... 0.151 0.063 ------------------------------------------------------------------------ (l) Wet air pollution control scrubber blowdown--Subpart D--PSES. There shall be no discharge of process wastewater pollutants. (m) Pressure bonding contact cooling water. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metal and base metal pressure bonded --------------------------- Cadmium..................................... 0.029 0.013 Copper...................................... 0.159 0.084 Cyanide..................................... 0.024 0.010 Silver...................................... 0.034 0.014 ------------------------------------------------------------------------ (n) Surface treatment spent baths. [[Page 733]] Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals surface treated --------------------------- Cadmium..................................... 0.033 0.015 Copper...................................... 0.183 0.097 Cyanide..................................... 0.028 0.012 Silver...................................... 0.040 0.017 ------------------------------------------------------------------------ (o) Surface treatment rinse. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals surface treated --------------------------- Cadmium..................................... 0.210 0.093 Copper...................................... 1.17 0.616 Cyanide..................................... 0.179 0.074 Silver...................................... 0.253 0.105 ------------------------------------------------------------------------ (p) Alkaline cleaning spent baths. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals alkaline cleaned --------------------------- Cadmium..................................... 0.021 0.009 Copper...................................... 0.114 0.060 Cyanide..................................... 0.018 0.007 Silver...................................... 0.025 0.010 ------------------------------------------------------------------------ (q) Alkaline cleaning rinse. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals alkaline cleaned --------------------------- Cadmium..................................... 0.381 0.168 Copper...................................... 2.13 1.12 Cyanide..................................... 0.325 0.135 Silver...................................... 0.459 0.191 ------------------------------------------------------------------------ (r) Alkaline cleaning prebonding wastewater. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals and base metal cleaned prior to bonding --------------------------- Cadmium..................................... 0.400 0.174 Copper...................................... 2.210 1.16 Cyanide..................................... 0.337 0.139 Silver...................................... 0.476 0.197 ------------------------------------------------------------------------ (s) Tumbling or burnishing wastewater. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals tumbled or burnished --------------------------- Cadmium..................................... 0.412 0.182 Copper...................................... 2.300 1.21 Cyanide..................................... 0.351 0.145 Silver...................................... 0.496 0.206 ------------------------------------------------------------------------ (t) Sawing or grinding spent neat oils--Subpart D--PSES. There shall be no discharge of process wastewater pollutants. (u) Sawing or grinding spent emulsions. Subpart D--PSES ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of precious metals sawed or ground with emulsions --------------------------- Cadmium..................................... 0.032 0.014 Copper...................................... 0.178 0.094 Cyanide..................................... 0.027 0.011 Silver...................................... 0.038 0.016 ------------------------------------------------------------------------ (v) Degreasing spent solvents--Subpart D--PSNS. There shall be no discharge of process wastewater pollutants. [50 FR 34270, Aug. 23, 1985; 51 FR 2886, Jan. 22, 1986]