[Code of Federal Regulations] [Title 40, Volume 27] [Revised as ofJuly 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR467.53] [Page 645-646] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 467--ALUMINUM FORMING POINT SOURCE CATEGORY--Table of Contents Subpart E--Drawing With Neat Oils Subcategory Sec. 467.53 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 discharge of wastewater pollutants from the core and ancillary operations shall not exceed the values set forth below: Subpart E Core ------------------------------------------------------------------------ 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 drawn with neat oils -------------- Chromium..................................... 0.022 0.009 Cyanide...................................... 0.015 0.006 Zinc......................................... 0.073 0.031 Aluminum..................................... 0.321 0.16 ------------------------------------------------------------------------ [[Page 646]] Subpart E Continuous Rod 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 rod cast --------------- Chromium..................................... 0.00086 0.0004 Cyanide...................................... 0.0006 0.0002 Zinc......................................... 0.0029 0.0012 Aluminum..................................... 0.0127 0.0063 ------------------------------------------------------------------------ Subpart E Continuous Rod Casting 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 rod cast --------------- Chromium.................................... 0.086 0.035 Cyanide..................................... 0.056 0.024 Zinc........................................ 0.283 0.118 Aluminum.................................... 1.247 0.621 ------------------------------------------------------------------------ Subpart E 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..................................... 0.896 0.367 Cyanide...................................... 0.591 0.245 Zinc......................................... 2.974 1.243 Aluminum..................................... 13.10 6.519 ------------------------------------------------------------------------ Subpart E 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 0.563 ------------------------------------------------------------------------ Subpart E 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 4.451 ------------------------------------------------------------------------ Subpart E 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........................................ 2.82 1.179 Aluminum.................................... 12.43 6.19 ------------------------------------------------------------------------ [48 FR 49149, Oct. 24, 1983; 49 FR 11633 and 11635, Mar. 27, 1984]