[Code of Federal Regulations] [Title 40, Volume 27] [Revised as ofJuly 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR471.43] [Page 730-733] 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. 471.43 New source performance standards (NSPS). Any new source subject to this subpart must achieve the following new source performance standards (NSPS): (a) Rolling Spent Neat Oils--Subpart D--NSPS. There shall be no discharge of process wastewater pollutants. (b) Rolling spent emulsions. Subpart D--NSPS ------------------------------------------------------------------------ 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 Oil and grease.............................. 1.54 0.925 TSS......................................... 3.16 1.51 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (c) Drawing spent neat oils--Subpart D--NSPS. There shall be no discharge of process wastewater pollutants. (d) Drawing spent emulsions. [[Page 731]] Subpart D--NSPS ------------------------------------------------------------------------ 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..................................... 0.017 0.007 Copper...................................... 0.091 0.048 Cyanide..................................... 0.014 0.006 Silver...................................... 0.020 0.008 Oil and grease.............................. 0.950 0.570 TSS......................................... 1.95 0.927 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (e) Drawing spent soap solutions. Subpart D--NSPS ------------------------------------------------------------------------ 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 Oil and grease.............................. 0.063 0.038 TSS......................................... 0.128 0.061 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (f) Metal powder production atomization wastewater. Subpart D--NSPS ------------------------------------------------------------------------ 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 Oil and grease.............................. 134 80.2 TSS......................................... 274 131 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (g) Heat treatment contact cooling water. Subpart D--NSPS ------------------------------------------------------------------------ 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 Oil and grease.............................. 8.34 5.01 TSS......................................... 17.1 8.13 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (h) Semi-continuous and continuous casting contact cooling water. Subpart D--NSPS ------------------------------------------------------------------------ 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 Oil and grease.............................. 20.6 12.4 TSS......................................... 42.3 20.1 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (i) Stationary casting contact cooling water--Subpart D--NSPS. There shall be no discharge of process wastewater pollutants. (j) Direct chill casting contact cooling water. Subpart D--NSPS ------------------------------------------------------------------------ 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 direct chill method --------------- Cadmium..................................... 0.367 0.162 Copper...................................... 2.05 1.08 Cyanide..................................... 0.313 0.130 Silver...................................... 0.443 0.184 Oil and grease.............................. 21.6 13.0 TSS......................................... 44.3 21.1 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (k) Shot casting contact cooling water. [[Page 732]] Subpart D--NSPS ------------------------------------------------------------------------ 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 Oil and grease.............................. 7.34 4.41 TSS......................................... 15.1 7.16 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (l) Wet air pollution control scrubber blowdown--Subpart D--NSPS. There shall be no discharge of process wastewater pollutants. (m) Pressure bonding contact cooling water. Subpart D--NSPS ------------------------------------------------------------------------ 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 pressure bonded --------------- Cadmium..................................... 0.029 0.013 Copper...................................... 0.159 0.084 Cyanide..................................... 0.024 0.010 Silver...................................... 0.034 0.014 Oil and grease.............................. 1.67 1.00 TSS......................................... 3.43 1.63 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (n) Surface treatment spent baths. Subpart D--NSPS ------------------------------------------------------------------------ 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 Oil and grease.............................. 1.93 1.16 TSS......................................... 3.95 1.88 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (o) Surface treatment rinse. Subpart D--NSPS ------------------------------------------------------------------------ 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 Oil and grease.............................. 12.3 7.39 TSS......................................... 25.3 12.0 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (p) Alkaline cleaning spent baths. Subpart D--NSPS ------------------------------------------------------------------------ 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 Oil and grease.............................. 1.20 0.720 TSS......................................... 2.46 1.17 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (q) Alkaline cleaning rinse. Subpart D--NSPS ------------------------------------------------------------------------ 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 1.112 Cyanide..................................... 0.325 0.135 Silver...................................... 0.459 0.191 Oil and grease.............................. 22.4 13.5 TSS......................................... 45.9 21.9 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (r) Alkaline cleaning pre-bonding wastewater. [[Page 733]] Subpart D--NSPS ------------------------------------------------------------------------ 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...................................... 2.21 1.16 Cyanide..................................... 0.337 0.139 Silver...................................... 0.476 0.197 Oil and grease.............................. 23.2 13.9 TSS......................................... 47.6 22.6 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (s) Tumbling or burnishing wastewater. Subpart D--NSPS ------------------------------------------------------------------------ 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...................................... 2.30 1.21 Cyanide..................................... 0.351 0.145 Silver...................................... 0.496 0.206 Oil and grease.............................. 24.2 14.5 TSS......................................... 49.6 23.6 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (t) Sawing or grinding spent neat oils--Subpart D--NSPS. There shall be no discharge of process wastewater pollutants. (u) Sawing or grinding spent emulsions. Subpart D--NSPS ------------------------------------------------------------------------ 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 Oil and grease.............................. 1.87 1.12 TSS......................................... 3.83 1.82 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (v) Degreasing spent solvents--Subpart D--NSPS. There shall be no discharge of process wastewater pollutants. [50 FR 34270, Aug. 23, 1985; 51 FR 2886, Jan. 22, 1986]