[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: 40CFR467.35] [Page 636-638] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 467_ALUMINUM FORMING POINT SOURCE CATEGORY--Table of Contents Subpart C_Extrusion Subcategory Sec. 467.35 Pretreatment standards for existing sources. (a) Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. (b) There shall be no discharge allowance for wastewater pollutants from the degassing operation. (c) The mass of wastewater pollutants from the core and ancillary operations except those identified in paragraph (b), introduced into a POTW shall not exceed the following values: [[Page 637]] Subpart C Core ------------------------------------------------------------------------ PSES --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off- lbs) of extruded --------------- Chromium.................................... 0.15 0.061 Cyanide..................................... 0.098 0.041 Zinc........................................ 0.49 0.21 TTO......................................... 0.23 ............ Oil and grease (alternate monitoring 18 8.8 parameter)................................. ------------------------------------------------------------------------ Subpart C Extrusion Press Leakage ------------------------------------------------------------------------ PSES ------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off-lbs) of extruded -------------- Chromium...................................... 0.65 0.27 Cyanide....................................... 0.43 0.18 Zinc.......................................... 2.16 0.90 TTO........................................... 1.02 ........... Oil and grease (alternate monitoring 77 39 parameter)................................... ------------------------------------------------------------------------ Subpart C Direct Chill Casting Contact Cooling Water ------------------------------------------------------------------------ PSES ------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off-lbs) of aluminum cast -------------- Chromium...................................... 0.59 0.24 Cyanide....................................... 0.39 0.16 Zinc.......................................... 1.94 0.81 TTO........................................... 0.92 ........... Oil and grease (alternate monitoring 69 35 parameter)................................... ------------------------------------------------------------------------ Subpart C Press Heat Treatment Contact Cooling Water ------------------------------------------------------------------------ PSES --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off- lbs) of aluminum quenched --------------- Chromium.................................... 0.90 0.37 Cyanide..................................... 0.59 0.25 Zinc........................................ 2.98 1.25 TTO......................................... 1.41 ............ Oil and grease (alternate monitoring 110 53 parameter)................................. ------------------------------------------------------------------------ Subpart C Solution Heat Treatment Contact Cooling Water ------------------------------------------------------------------------ PSES --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off- lbs) of aluminum quenched --------------- Chromium.................................... 0.90 0.37 Cyanide..................................... 0.59 0.25 Zinc........................................ 2.98 1.25 TTO......................................... 1.41 ............ Oil and grease (alternate monitoring 110 53 parameter)................................. ------------------------------------------------------------------------ Subpart C Cleaning or Etching Bath ------------------------------------------------------------------------ PSES --------------------------- 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 0.109 TTO......................................... 0.124 ............ Oil and grease (alternate monitoring 9.3 4.7 parameter)................................. ------------------------------------------------------------------------ Subpart C Cleaning or Etching Rinse ------------------------------------------------------------------------ PSES ------------------------- 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...................................... 1.7 0.7 Cyanide....................................... 1.2 0.5 Zinc.......................................... 5.7 2.4 TTO........................................... 2.7 ........... Oil & Grease (alternate monitoring parameter). 200 100 ------------------------------------------------------------------------ Subpart C Cleaning or Etching Scrubber Liquor ------------------------------------------------------------------------ PSES ------------------------- 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...................................... 0.85 0.35 Cyanide....................................... 0.56 0.23 Zinc.......................................... 2.82 1.18 TTO........................................... 1.34 ........... Oil and grease (alternate monitoring 100 50 parameter)................................... ------------------------------------------------------------------------ [[Page 638]] [48 FR 49149, Oct. 24, 1983; 49 FR 11632, 11633 and 11634, Mar. 27, 1984, as amended at 53 FR 52369-52371, Dec. 27, 1988]