Any new source subject to this subpart must achieve the following performance standards. The mass of pollutants in the core and ancillary operations' process wastewater shall not exceed the following values:
Subpart A
Core With an Annealing Furnace Scrubber ------------------------------------------------------------------------
NSPS
---------------------------
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 0.0123Cyanide..................................... 0.016 0.0065Zinc........................................ 0.084 0.0343Aluminum.................................... 0.499 0.221Oil and grease.............................. 0.817 0.817Suspended solids............................ 1.225 0.980pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10 at all times.
Subpart A
Core Without an Annealing Furnace Scrubber ------------------------------------------------------------------------
NSPS
---------------------------
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 0.0083Cyanide..................................... 0.011 0.0044Zinc........................................ 0.057 0.023Aluminum.................................... 0.338 0.150Oil and grease.............................. 0.553 0.553Suspended solids............................ 0.830 0.664pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10 at all times.
Subpart A
Continuous Sheet Casting Spent Lubricant ------------------------------------------------------------------------
NSPS
---------------------------
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 0.00082Aluminum.................................... 0.012 0.0053Oil and grease.............................. 0.0197 0.019Suspended solids............................ 0.0295 0.022pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10 at all times.
Subpart A
Solution Heat Treatment Contact Cooling Water ------------------------------------------------------------------------
NSPS
---------------------------
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 0.86Aluminum.................................... 12.45 5.52Oil and grease.............................. 20.37 20.37Suspended solids............................ 30.56 24.45pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10 at all times.
Subpart A
Cleaning or Etching Bath ------------------------------------------------------------------------
NSPS
---------------------------
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.................................... 0.066 0.027Cyanide..................................... 0.036 0.015Zinc........................................ 0.183 0.075Aluminum.................................... 1.094 0.485Oil and grease.............................. 1.79 1.79Suspended solids............................ 2.69 2.15pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10 at all times.
Subpart A
Cleaning or Etching Rinse ------------------------------------------------------------------------
NSPS
---------------------------
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 0.59Aluminum.................................... 8.50 3.70Oil and grease.............................. 13.91 13.91Suspended solids............................ 20.87 16.69pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10 at all times.
Subpart A
Cleaning or Etching Scrubber Liquor ------------------------------------------------------------------------
NSPS
---------------------------
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.................................... 0.715 0.29Cyanide..................................... 0.387 0.16Zinc........................................ 1.97 0.81Aluminum.................................... 11.81 5.24Oil and grease.............................. 19.33 19.33Suspended solids............................ 29.00 23.20pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.0 to 10 at all times. [48 FR 49149, Oct. 24, 1983; 49 FR 11631 and 11632, Mar. 27, 1984]