[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: 40CFR467.45] [Page 641-642] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 467_ALUMINUM FORMING POINT SOURCE CATEGORY--Table of Contents Subpart D_Forging Subcategory Sec. 467.45 Pretreatment standards for existing sources. Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduced pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in aluminum forming process wastewater introduced into a POTW shall not exceed the values set forth below: Subpart D Core ------------------------------------------------------------------------ PSES --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (lb/million off- lbs) of aluminum forged --------------- Chromium.................................... 0.022 0.009 Cyanide..................................... 0.015 0.006 Zinc........................................ 0.073 0.031 TTO......................................... 0.035 ............ Oil and grease (alternate monitoring 2.6 1.3 parameter)................................. ------------------------------------------------------------------------ Subpart D Forging 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 forged --------------- Chromium.................................... 0.042 0.017 Cyanide..................................... 0.028 0.011 Zinc........................................ 0.14 0.058 TTO......................................... 0.065 ............ Oil and grease (alternate monitoring 4.9 2.5 parameter)................................. ------------------------------------------------------------------------ Subpart D 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.................................... 0.897 0.37 Cyanide..................................... 0.591 0.25 Zinc........................................ 2.98 1.24 TTO......................................... 1.41 ............ Oil and grease (alternate monitoring 110 53 parameter)................................. ------------------------------------------------------------------------ Subpart D 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 0.11 TTO......................................... 0.123 ............ Oil and grease (alternate monitoring 9.3 4.7 parameter)................................. ------------------------------------------------------------------------ Subpart D Cleaning or Etching Rinse ------------------------------------------------------------------------ PSES --------------------------- Pollutant or pollutant property Maximum for Maximum for monthly any 1 day average ------------------------------------------------------------------------ mb/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 and grease (alternate monitoring 200 100 parameter)................................. ------------------------------------------------------------------------ [[Page 642]] Subpart D 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..................................... 0.851 0.35 Cyanide...................................... 0.561 0.23 Zinc......................................... 2.82 1.18 TTO.......................................... 1.34 ........... Oil and grease (alternate monitoring 100 50 parameter).................................. ------------------------------------------------------------------------ [48 FR 49149, Oct. 24, 1983; 49 FR 11632, 11633, and 11635, Mar. 27, 1984, as amended at 53 FR 52369-52371, Dec. 27, 1988]