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

Open Table
Pollutant or pollutant property NSPS
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum rolled with neat oils
Chromium 0.030 0.0123
Cyanide 0.016 0.0065
Zinc 0.084 0.0343
Aluminum 0.499 0.221
Oil and grease 0.817 0.817
Suspended solids 1.225 0.980
pH (1) (1)

1Within the range of 7.0 to 10 at all times.

Subpart A

Core Without an Annealing Furnace Scrubber

Open Table
Pollutant or pollutant property NSPS
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum rolled with neat oils
Chromium 0.021 0.0083
Cyanide 0.011 0.0044
Zinc 0.057 0.023
Aluminum 0.338 0.150
Oil and grease 0.553 0.553
Suspended solids 0.830 0.664
pH (1) (1)

1Within the range of 7.0 to 10 at all times.

Subpart A

Continuous Sheet Casting Spent Lubricant

Open Table
Pollutant or pollutant property NSPS
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cast
Chromium 0.00073 0.00029
Cyanide 0.00039 0.00016
Zinc 0.0020 0.00082
Aluminum 0.012 0.0053
Oil and grease 0.0197 0.019
Suspended solids 0.0295 0.022
pH (1) (1)

1Within the range of 7.0 to 10 at all times.

Subpart A

Solution Heat Treatment Contact Cooling Water

Open Table
Pollutant or pollutant property NSPS
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum quenched
Chromium 0.76 0.31
Cyanide 0.41 0.17
Zinc 2.08 0.86
Aluminum 12.45 5.52
Oil and grease 20.37 20.37
Suspended solids 30.56 24.45
pH (1) (1)

1Within the range of 7.0 to 10 at all times.

Subpart A

Cleaning or Etching Bath

Open Table
Pollutant or pollutant property NSPS
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium 0.066 0.027
Cyanide 0.036 0.015
Zinc 0.183 0.075
Aluminum 1.094 0.485
Oil and grease 1.79 1.79
Suspended solids 2.69 2.15
pH (1) (1)

1Within the range of 7.0 to 10 at all times.

Subpart A

Cleaning or Etching Rinse

Open Table
Pollutant or pollutant property NSPS
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium 0.52 0.21
Cyanide 0.28 0.11
Zinc 1.42 0.59
Aluminum 8.50 3.70
Oil and grease 13.91 13.91
Suspended solids 20.87 16.69
pH (1) (1)

1Within the range of 7.0 to 10 at all times.

Subpart A

Cleaning or Etching Scrubber Liquor

Open Table
Pollutant or pollutant property NSPS
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium 0.715 0.29
Cyanide 0.387 0.16
Zinc 1.97 0.81
Aluminum 11.81 5.24
Oil and grease 19.33 19.33
Suspended solids 29.00 23.20
pH (1) (1)

1Within the range of 7.0 to 10 at all times.

[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11632, Mar. 27, 1984]


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