[Code of Federal Regulations] [Title 40, Volume 27] [Revised as ofJuly 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR471.82] [Page 776-778] 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 H--Zinc Forming Subcategory Sec. 471.82 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). 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 (BAT): (a) Rolling spent neat oils--Subpart H--BAT. There shall be no discharge of process wastewater pollutants. (b) Rolling spent emulsions. Subpart H--BAT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of zinc rolled with emulsions --------------- Chromium..................................... 0.0005 0.0002 Copper....................................... 0.002 0.0009 Cyanide...................................... 0.0003 0.0001 Zinc......................................... 0.002 0.0006 ------------------------------------------------------------------------ (c) Rolling contact cooling water. [[Page 777]] Subpart H--BAT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of zinc rolled with contact cooling water -------------- Chromium...................................... 0.020 0.009 Copper........................................ 0.069 0.033 Cyanide....................................... 0.011 0.004 Zinc.......................................... 0.055 0.023 ------------------------------------------------------------------------ (d) Drawing spent emulsions. Subpart H--BAT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of zinc drawn with emulsions -------------- Chromium..................................... 0.002 0.0009 Copper....................................... 0.008 0.004 Cyanide...................................... 0.001 0.0005 Zinc......................................... 0.006 0.003 ------------------------------------------------------------------------ (e) Direct chill casting contact cooling water. Subpart H--BAT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of zinc cast by the direct chill method -------------- Chromium...................................... 0.019 0.008 Copper........................................ 0.065 0.031 Cyanide....................................... 0.010 0.004 Zinc.......................................... 0.052 0.021 ------------------------------------------------------------------------ (f) Stationary casting contact cooling water--Subpart H--BAT. There shall be no discharge of process wastewater pollutants. (g) Heat treatment contact cooling water. Subpart H--BAT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of zinc heat treated -------------- Chromium...................................... 0.029 0.012 Copper........................................ 0.098 0.047 Cyanide....................................... 0.016 0.006 Zinc.......................................... 0.078 0.032 ------------------------------------------------------------------------ (h) Surface treatment spent baths. Subpart H--BAT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of zinc surface treated -------------- Chromium...................................... 0.033 0.014 Copper........................................ 0.114 0.054 Cyanide....................................... 0.018 0.007 Zinc.......................................... 0.091 0.038 ------------------------------------------------------------------------ (i) Surface treatment rinse. Subpart H--BAT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of zinc surface treated -------------- Chromium...................................... 0.133 0.054 Copper........................................ 0.457 0.219 Cyanide....................................... 0.072 0.029 Zinc.......................................... 0.365 0.151 ------------------------------------------------------------------------ (j) Alkaline cleaning spent baths. Subpart H--BAT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of zinc alkaline cleaned --------------- Chromium.................................... 0.002 0.0006 Copper...................................... 0.005 0.002 Cyanide..................................... 0.0007 0.0003 Zinc........................................ 0.004 0.002 ------------------------------------------------------------------------ (k) Alkaline cleaning rinse. Subpart H--BAT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of zinc alkaline cleaned --------------- Chromium.................................... 0.626 0.254 Copper...................................... 2.17 1.03 Cyanide..................................... 0.338 0.135 Zinc........................................ 1.73 0.710 ------------------------------------------------------------------------ (l) Sawing or grinding spent emulsions. [[Page 778]] Subpart H--BAT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of zinc sawed or ground with emulsions -------------- Chromium...................................... 0.009 0.004 Copper........................................ 0.031 0.015 Cyanide....................................... 0.005 0.002 Zinc.......................................... 0.025 0.010 ------------------------------------------------------------------------ (m) Electrocoating rinse. Subpart H--BAT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of zinc electrocoated -------------- Chromium...................................... 0.085 0.035 Copper........................................ 0.293 0.140 Cyanide....................................... 0.046 0.019 Zinc.......................................... 0.234 0.096 ------------------------------------------------------------------------ (n) Degreasing spent solvents--Subpart H--BAT. There shall be no discharge or process wastewater pollutants. [50 FR 34270, Aug. 23, 1985; 51 FR 2888, Jan. 22, 1986]