[Code of Federal Regulations] [Title 40, Volume 29] [Revised as of July 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR467.52] [Page 643-644] 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. 467.52 Effluent limitations representing the degree of effluent reduction attainable by the application of best practicable control technology currently available. 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 practicable technology currently available: Subpart E Core ------------------------------------------------------------------------ BPT effluent limitations --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/per million off-lbs) of aluminum drawn with neat oils --------------- Chromium.................................... 0.022 0.0090 Cyanide..................................... 0.015 0.0050 Zinc........................................ 0.073 0.031 Aluminum.................................... 0.32 0.160 Oil and grease.............................. 0.97 0.598 Suspended solids............................ 2.04 0.972 pH.......................................... (1) (1) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10 at all times. [[Page 644]] Subpart E Continuous Rod Casting Spent Lubricant ------------------------------------------------------------------------ BPT 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 0.00035 Cyanide..................................... 0.00057 0.00024 Zinc........................................ 0.00287 0.0012 Aluminum.................................... 0.0127 0.0063 Oil and grease.............................. 0.0393 0.0236 Suspended solids............................ 0.0805 0.0383 pH.......................................... (1) (1) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10.0 at all times. Subpart E Continuous Rod Casting Contact Cooling Water ------------------------------------------------------------------------ BPT 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.................................... 0.684 0.28 Cyanide..................................... 0.451 0.187 Zinc........................................ 2.271 0.949 Aluminum.................................... 10.00 4.976 Oil and grease.............................. 31.10 18.66 Suspended solids............................ 63.76 30.322 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10 at all times. Subpart E Solution Heat Treatment Contact Cooling Water ------------------------------------------------------------------------ BPT 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...................................... 3.39 1.39 Cyanide....................................... 2.24 0.93 Zinc.......................................... 11.25 4.70 Aluminum...................................... 49.55 24.66 Oil and grease................................ 154.10 92.46 Suspended solids.............................. 315.91 150.25 pH............................................ (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10 at all times. Subpart E Cleaning or Etching Bath ------------------------------------------------------------------------ BPT 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........................................ 0.26 0.11 Aluminum.................................... 1.150 0.57 Oil and grease.............................. 3.58 2.15 Suspended solids............................ 7.34 3.49 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10 at all times. Subpart E Cleaning or Etching Rinse ------------------------------------------------------------------------ BPT 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...................................... 6.12 2.51 Cyanide....................................... 4.04 1.67 Zinc.......................................... 20.31 8.49 Aluminum...................................... 89.46 44.52 Oil and grease................................ 278.24 166.95 Suspended solids.............................. 570.39 271.29 pH............................................ (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10 at all times. Subpart E Cleaning or Etching Scrubber Liquor ------------------------------------------------------------------------ BPT 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...................................... 7.00 2.86 Cyanide....................................... 4.61 1.91 Zinc.......................................... 23.22 9.70 Aluminum...................................... 102.24 50.88 Oil and grease................................ 318.00 190.8 Suspended solids.............................. 651.90 310.05 pH............................................ (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10 at all times. [48 FR 49149, Oct. 24, 1983; 49 FR 11633 and 11635, Mar. 27, 1984] [[Page 645]]