Except as provided in 40 CFR 403.7, any new 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 new sources. The mass of wastewater pollutants in aluminum forming process wastewater introduced into a POTW shall not exceed the following values:
Subpart A
Core With an Annealing Furnace Scrubber ------------------------------------------------------------------------
PSNS
---------------------------
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.................................... 0.030 0.013Cyanide..................................... 0.017 0.007Zinc........................................ 0.084 0.035TTO......................................... 0.057 ............Oil and grease (alternate monitoring 0.817 0.817
parameter).................................------------------------------------------------------------------------
Subpart A
Core Without an Annealing Furnace Scrubber ------------------------------------------------------------------------
PSNS
---------------------------
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.................................... 0.021 0.009Cyanide..................................... 0.011 0.005Zinc........................................ 0.057 0.024TTO......................................... 0.038 ............Oil and grease (alternate monitoring 0.54 0.54
parameter).................................------------------------------------------------------------------------
Subpart A
Continuous Sheet Casting Lubricant ------------------------------------------------------------------------
PSNS
---------------------------
Pollutant or pollutant property Maximum for
Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (lb/million off-
lbs) of aluminum cast
---------------------------Chromium.................................... 0.00073 0.00029Cyanide..................................... 0.00039 0.00016Zinc........................................ 0.0020 0.00082TTO......................................... 0.0014 ............Oil and grease (alternate monitoring 0.020 0.020
parameter).................................------------------------------------------------------------------------
Subpart A
Solution Heat Treatment Contact Cooling Water ------------------------------------------------------------------------
PSNS
---------------------------
Pollutant or pollutant property Maximum for
Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/off-kg (lb/million off-
lbs) of aluminum quenched
---------------------------Chromium.................................... 0.76 0.31Cyanide..................................... 0.41 0.17Zinc........................................ 2.08 0.86TTO......................................... 1.41 ............Oil and grease (alternate monitoring 20.37 20.37
parameter).................................------------------------------------------------------------------------
Subpart A
Cleaning or Etching Bath ------------------------------------------------------------------------
PSNS
---------------------------
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.................................... 0.067 0.027Cyanide..................................... 0.036 0.015Zinc........................................ 0.183 0.075TTO......................................... 0.124 ............Oil and grease (alternate monitoring 1.79 1.79
parameter).................................------------------------------------------------------------------------
Subpart A
Cleaning or Etching Rinse ------------------------------------------------------------------------
PSNS
---------------------------
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.................................... 0.52 0.21Cyanide..................................... 0.28 0.11Zinc........................................ 1.42 0.59TTO......................................... 0.96 ............Oil and grease (alternate monitoring 13.91 13.91
parameter).................................------------------------------------------------------------------------
Subpart A
Cleaning or Etching Scrubber Liquor ------------------------------------------------------------------------
PSNS
---------------------------
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.................................... 0.72 0.29Cyanide..................................... 0.39 0.16Zinc........................................ 1.97 0.81TTO......................................... 1.34 ............Oil and grease (alternate monitoring 19.33 19.33
parameter).................................------------------------------------------------------------------------ [48 FR 49149, Oct. 24, 1983; 49 FR 11631 and 11632, Mar. 27, 1984]