Collapse to view only § 467.22 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

§ 467.20 - Applicability; description of the rolling with emulsions subcategory.

This subpart applies to dischargers of pollutants to waters of the United States and introductions of pollutants into publicly owned treatment works from the core and the ancillary operations of the rolling with emulsions subcategory.

§ 467.21 - Specialized definitions.

For the purpose of this subpart:

(a) The “core” of the rolling with emulsions subcategory shall include rolling using emulsions, roll grinding, stationary casting, homogenizing, artificial aging, annealing, and sawing.

(b) The term “ancillary operation” shall mean any operation not previously included in the core, performed on-site, following or preceding the rolling operation. The ancillary operations shall include direct chill casting, solution heat treatment, cleaning or etching, and degassing.

§ 467.22 - Effluent limitations representing the degree of effluent reduction attainable by the application of the 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 B 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 rolled with emulsions Chromium0.0570.024 Cyanide0.0380.016 Zinc0.190.079 Aluminum0.840.416 Oil and grease2.601.56 Suspended solids5.332.53 pH( 1)( 1)

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

Subpart B Direct Chill 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 Chromium0.590.24 Cyanide0.390.16 Zinc1.940.81 Aluminum8.554.26 Oil and grease26.5815.95 Suspended solids54.4925.92 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
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 10.0 at all times.

Subpart B 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 10.0 at all times.

Subpart B 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 Aluminum89.4644.52 Oil and grease278.24166.95 Suspended solids570.39271.29 pH( 1)( 1)

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

Subpart B 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 10.0 at all times.

[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11632, Mar. 27, 1984, as amended at 53 FR 52370, Dec. 27, 1988]

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

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. The discharge of process wastewater pollutants from the core shall not exceed the values set forth below:

Subpart B Core
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 rolled with emulsions Chromium0.0570.024 Cyanide0.0380.016 Zinc0.190.079 Aluminum0.840.42
Subpart B Direct Chill Casting Contact Cooling Water
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 Chromium0.590.24 Cyanide0.390.16 Zinc1.940.81 Aluminum8.554.26
Subpart B Solution Heat Treatment Contact Cooling Water
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 Chromium0.900.37 Cyanide0.590.25 Zinc2.981.25 Aluminum13.106.52
Subpart B Cleaning or Etching Bath
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 Chromium0.0790.032 Cyanide0.0520.022 Zinc0.260.109 Aluminum1.150.573
Subpart B Cleaning or Etching Rinse
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 Chromium0.610.25 Cyanide0.410.17 Zinc2.030.85 Aluminum8.954.45
Subpart B Cleaning or Etching Scrubber Liquor
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 Chromium0.850.35 Cyanide0.560.23 Zinc2.821.18 Aluminum12.436.19
[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11633, Mar. 27, 1984]

§ 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
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 Chromium0.0480.020 Cyanide0.0260.011 Zinc0.1330.055 Aluminum0.800.35 Oil and grease1.301.30 Suspended solids1.951.56 pH( 1)( 1)

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

Subpart B Direct Chill Casting Contact Cooling Water
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 Chromium0.490.20 Cyanide0.270.11 Zinc1.360.56 Aluminum8.123.60 Oil and grease13.2913.29 Suspended solids19.9415.95 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
Pollutant or pollutant property NSPS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum quenched Chromium0.760.31 Cyanide0.410.17 Zinc2.080.86 Aluminum12.455.52 Oil and grease20.3720.37 Suspended solids30.5624.45 pH( 1)( 1)

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

Subpart B Cleaning or Etching Bath
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 Chromium0.0670.027 Cyanide0.0360.015 Zinc0.1830.075 Aluminum1.0940.485 Oil and grease1.791.79 Suspended solids2.692.15 pH( 1)( 1)

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

Subpart B Cleaning or Etching Rinse
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 Chromium0.520.21 Cyanide0.280.11 Zinc1.420.59 Aluminum8.503.77 Oil and grease13.9113.91 Suspended solids20.8716.70 pH( 1)( 1)

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

Subpart B Cleaning or Etching Scrubber Liquor
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 Chromium0.720.29 Cyanide0.390.16 Zinc1.970.81 Aluminum11.815.24 Oil and grease19.3319.33 Suspended solids29.0023.20 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]

§ 467.25 - Pretreatment standards for existing sources.

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in aluminum forming process wastewater introduced into a POTW shall not exceed the following values:

Subpart B Core
Pollutant or pollutant property PSES Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum rolled with emulsions Chromium0.0570.024 Cyanide0.0380.016 Zinc0.1900.079 TTO0.090Oil and grease (alternate monitoring parameter)6.83.4
Subpart B Direct Chill Casting Contact Cooling Water
Pollutant or pollutant property PSES Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cast by semi-continuous methods Chromium0.590.24 Cyanide0.390.16 Zinc1.940.81 TTO0.92Oil and grease (alternate monitoring parameter)6935
Subpart B Solution Heat Treatment Contact Cooling Water
Pollutant or pollutant property PSES Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum quenched Chromium0.900.37 Cyanide0.590.25 Zinc2.981.25 TTO1.41Oil and grease (alternate monitoring parameter)11053
Subpart B Cleaning or Etching Bath
Pollutant or pollutant property PSES 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 TTO0.124Oil and grease (alternate monitoring parameter)9.34.7
Subpart B Cleaning or Etching Rinse
Pollutant or pollutant property PSES Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched Chromium0.610.25 Cyanide0.410.17 Zinc2.030.85 TTO0.96Oil and grease (alternate monitoring parameter)7336
Subpart B Cleaning or Etching Scrubber Liquor
Pollutant or pollutant property PSES Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched Chromium0.850.35 Cyanide0.560.23 Zinc2.831.18 TTO1.34Oil and grease (alternate monitoring parameter)10050
[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11632, 11633, Mar. 27, 1984, as amended at 53 FR 52369, 52370, Dec. 27, 1988]

§ 467.26 - Pretreatment standards for new sources.

Except as provided in § 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of process wastewater pollutants from the core and ancillary operations introduced into a POTW shall not exceed the values set forth below:

Subpart B Core
Pollutant or pollutant property PSNS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum rolled with emulsions Chromium0.0480.020 Cyanide0.0260.011 Zinc0.1330.055 TTO0.090Oil and grease (alternate monitoring parameter)1.301.30
Subpart B Direct Chill Casting Contact Cooling Water
Pollutant or pollutant property PSNS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cast by semicontinuous methods Chromium0.490.20 Cyanide0.270.11 Zinc1.360.56 TTO0.92Oil and grease (alternate monitoring parameter)13.2913.29
Subpart B Solution Heat Treatment Contact Cooling Water
Pollutant or pollutant property PSNS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum quenched Chromium0.760.31 Cyanide0.410.17 Zinc2.080.86 TTO1.41Oil and grease (alternate monitoring parameter)20.3720.37
Subpart B Cleaning or Etching Bath
Pollutant or pollutant property PSNS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched Chromium0.0670.027 Cyanide0.0360.015 Zinc0.1830.075 TTO0.124Oil and grease (alternate monitoring parameter)1.791.79
Subpart B Cleaning or Etching Rinse
Pollutant or pollutant property PSNS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched Chromium0.520.21 Cyanide0.280.11 Zinc1.420.59 TTO0.96Oil and grease (alternate monitoring parameter)13.9113.91
Subpart B Cleaning or Etching Scrubber Liquor
Pollutant or pollutant property PSNS Maximum for any 1 day Maximum for monthly average mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched Chromium0.720.29 Cyanide0.390.16 Zinc1.970.81 TTO1.34Oil and grease (alternate monitoring parameter)19.3319.33
[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11632, Mar. 27, 1984]

§ 467.27 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology. [Reserved]