U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 05, 2022

§ 467.62 - Effluent limitations representing the degree of effluent reduction attainable by the application of best practicable control technology currently available.

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 practicable control technology currently available:

Subpart F Core
Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum drawn with emulsions or soaps
Chromium0.2050.084
Cyanide0.1350.056
Zinc0.6800.285
Aluminum3.001.50
Oil and grease9.335.60
Suspended solids19.129.10
pH( 1)( 1)

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

Subpart F Continuous Rod Casting Spent Lubricant
Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cast
Chromium0.00090.0004
Cyanide0.00060.0003
Zinc0.00290.001
Aluminum0.0130.007
Oil and grease0.0400.024
Suspended solids0.0810.039
pH( 1)( 1)

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

Subpart F Continuous Rod Casting Contact Cooling Water
Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cast
Chromium0.6840.28
Cyanide0.4500.187
Zinc2.270.949
Aluminum10.004.976
Oil and grease31.1018.66
Suspended solids63.7630.323
pH( 1)( 1)

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

Subpart F Solution Heat Treatment Contact Cooling Water
Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum quenched
Chromium3.391.39
Cyanide2.240.93
Zinc11.254.70
Aluminum49.5524.66
Oil and grease154.1092.46
Suspended solids315.91150.25
pH( 1)( 1)

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

Subpart F Cleaning or Etching Bath
Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium0.0790.032
Cyanide0.0520.022
Zinc0.2620.109
Aluminum1.150.573
Oil and grease3.582.15
Suspended solids7.343.49
pH( 1)( 1)

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

Subpart F Cleaning or Etching Rinse
Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium6.122.51
Cyanide4.041.67
Zinc20.318.49
Aluminum89.4644.519
Oil and grease278.24166.95
Suspended solids570.39271.29
pH( 1)( 1)

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

Subpart F Cleaning or Etching Scrubber Liquor
Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium7.002.86
Cyanide4.611.91
Zinc23.229.70
Aluminum102.2450.88
Oil and grease318.00190.80
Suspended solids651.90310.05
pH( 1)( 1)

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

[48 FR 49149, Oct. 24, 1983; 49 FR 11633, 11635, Mar. 27, 1984]