Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

  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. Extrusion Subcategory
  8. Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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§ 467.33 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

(a) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:

(b) There shall be no discharge allowance for wastewater pollutants from the degassing operation.

(c) The discharge of wastewater pollutants from the core and ancillary operation except those in (b) of this section, shall not exceed the values set forth below:

Subpart C

Core

Expand Table
Pollutant or pollutant property BAT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum extruded
Chromium 0.15 0.061
Cyanide 0.098 0.041
Zinc 0.49 0.21
Aluminum 2.19 1.09

Subpart C

Extrusion Press Leakage

Expand Table
Pollutant or pollutant property BAT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum extruded
Chromium 0.65 0.27
Cyanide 0.43 0.18
Zinc 2.16 0.90
Aluminum 9.51 4.73

Subpart C

Direct Chill Casting Contact Cooling Water

Expand Table
Pollutant or pollutant property BAT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cast
Chromium 0.59 0.24
Cyanide 0.39 0.16
Zinc 1.94 0.81
Aluminum 8.55 4.26

Subpart C

Press Heat Treatment Contact Cooling Water

Expand Table
Pollutant or pollutant property BAT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum quenched
Chromium 0.90 0.37
Cyanide 0.59 0.25
Zinc 2.98 1.25
Aluminum 13.10 6.52

Subpart C

Solution Heat Treatment Contact Cooling Water

Expand Table
Pollutant or pollutant property BAT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum quenched
Chromium 0.90 0.37
Cyanide 0.59 0.25
Zinc 2.98 1.25
Aluminum 13.10 6.52

Subpart C

Cleaning or Etching Bath

Expand Table
Pollutant or pollutant property BAT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium 0.079 0.032
Cyanide 0.052 0.022
Zinc 0.262 0.109
Aluminum 1.15 0.58

Subpart C

Cleaning or Etching Rinse

Expand Table
Pollutant or pollutant property BAT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/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
Aluminum 25 13

Subpart C

Cleaning or Etching Scrubber Liquor

Expand Table
Pollutant or pollutant property BAT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium 0.85 0.35
Cyanide 0.56 0.23
Zinc 2.82 1.18
Aluminum 12.43 6.19

[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11633, 11634, Mar. 27, 1984, as amended at 53 FR 52370, Dec. 27, 1988]


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