[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: 40CFR467.13] [Page 619-620] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 467_ALUMINUM FORMING POINT SOURCE CATEGORY--Table of Contents Subpart A_Rolling With Neat Oils Subcategory Sec. 467.13 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. 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. The mass of pollutants in the core and ancillary operations' process wastewater shall not exceed the following values: Subpart A Core With an Annealing Furnace Scrubber ------------------------------------------------------------------------ BAT effluent limitations --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off- lbs) of aluminum rolled with neat oils --------------------------- Chromium.................................... 0.036 0.015 Cyanide..................................... 0.024 0.0098 Zinc........................................ 0.119 0.050 Aluminum.................................... 0.525 0.257 ------------------------------------------------------------------------ Subpart A Core Without an Annealing Furnace Scrubber ------------------------------------------------------------------------ BAT effluent limitations --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off- lbs) of aluminum rolled with neat oils --------------------------- Chromium.................................... 0.025 0.010 Cyanide..................................... 0.016 0.0067 Zinc........................................ 0.081 0.034 Aluminum.................................... 0.356 0.174 ------------------------------------------------------------------------ Subpart A Continuous Sheet Casting Spent Lubricant ------------------------------------------------------------------------ BAT effluent limitations --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off- lbs) of aluminum sheet cast --------------------------- Chromium.................................... 0.00086 0.00035 Cyanide..................................... 0.00057 0.00024 Zinc........................................ 0.00287 0.0012 Aluminum.................................... 0.0127 0.0062 ------------------------------------------------------------------------ Subpart A Solution Heat Treatment Contact Cooling Water ------------------------------------------------------------------------ BAT effluent limitations --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off- lbs) of aluminum quenched --------------------------- Chromium.................................... 0.897 0.367 Cyanide..................................... 0.591 0.245 Zinc........................................ 2.974 1.243 Aluminum.................................... 13.10 6.518 ------------------------------------------------------------------------ Subpart A Cleaning or Etching Bath ------------------------------------------------------------------------ BAT effluent limitations --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off- lbs) of aluminum cleaned or etched --------------------------- Chromium.................................... 0.079 0.032 Cyanide..................................... 0.052 0.022 Zinc........................................ 0.262 0.109 Aluminum.................................... 1.151 0.573 ------------------------------------------------------------------------ [[Page 620]] Subpart A Cleaning or Etching Rinse ------------------------------------------------------------------------ BAT effluent limitations --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off- lbs) of aluminum cleaned or etched --------------------------- Chromium.................................... 0.612 0.251 Cyanide..................................... 0.404 0.167 Zinc........................................ 2.031 0.849 Aluminum.................................... 8.944 4.45 ------------------------------------------------------------------------ Subpart A Cleaning or Etching Scrubber Liquor ------------------------------------------------------------------------ BAT effluent limitations --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off- lbs) of aluminum cleaned or etched --------------------------- Chromium.................................... 0.851 0.348 Cyanide..................................... 0.561 0.232 Zinc........................................ 2.822 1.179 Aluminum.................................... 12.43 6.186 ------------------------------------------------------------------------ [48 FR 49149, Oct. 24, 1983; 49 FR 11631 and 11632, Mar. 27, 1984]