New source performance standards.

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Effluent Guidelines and Standards
  6. Aluminum Forming Point Source Category
  7. Rolling With Emulsions Subcategory
  8. New source performance standards.

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§ 467.24 New source performance standards.

Any new source subject to this subpart must achieve the following performance standards. The discharge of process wastewater pollutants from the core shall not exceed the values set forth below:

Subpart B

Core

Expand 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 emulsions
Chromium 0.048 0.020
Cyanide 0.026 0.011
Zinc 0.133 0.055
Aluminum 0.80 0.35
Oil and grease 1.30 1.30
Suspended solids 1.95 1.56
pH (1) (1)

1 Within the range of 7.0 to 10.0 at all times.

Subpart B

Direct Chill Casting Contact Cooling Water

Expand 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 by semicontinuous methods
Chromium 0.49 0.20
Cyanide 0.27 0.11
Zinc 1.36 0.56
Aluminum 8.12 3.60
Oil and grease 13.29 13.29
Suspended solids 19.94 15.95
pH (1) (1)

1 The pH shall be maintained within the range of 7.0 to 10.0 at all times except for those situations when this waste stream is discharged separately and without commingling with any other wastewater in which case the pH shall be within the range of 6.0 to 10.0 at all times.

Subpart B

Solution Heat Treatment Contact Cooling Water

Expand 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)

1 Within the range of 7.0 to 10.0 at all times.

Subpart B

Cleaning or Etching Bath

Expand 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 0.067 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)

1 Within the range of 7.0 to 10.0 at all times.

Subpart B

Cleaning or Etching Rinse

Expand 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 3.77
Oil and grease 13.91 13.91
Suspended solids 20.87 16.70
pH (1) (1)

1 Within the range of 7.0 to 10.0 at all times.

Subpart B

Cleaning or Etching Scrubber Liquor

Expand 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 0.72 0.29
Cyanide 0.39 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)

1 Within the range of 7.0 to 10.0 at all times.

[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11633, Mar. 27, 1984, as amended at 53 FR 52370, Dec. 27, 1988]


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