CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 467—ALUMINUM FORMING POINT SOURCE CATEGORY > SUBPART B—Rolling With Emulsions Subcategory (§467.20 to §467.27) > 467.25—Pretreatment standards for existing sources.

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:
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
Chromium 0.057 0.024
Cyanide 0.038 0.016
Zinc 0.190 0.079
TTO 0.090
Oil and grease (alternate monitoring parameter) 6.8 3.4
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
Chromium 0.59 0.24
Cyanide 0.39 0.16
Zinc 1.94 0.81
TTO 0.92
Oil and grease (alternate monitoring parameter) 69 35
Pollutant or pollutant property PSES
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
TTO 1.41
Oil and grease (alternate monitoring parameter) 110 53
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
Chromium 0.079 0.032
Cyanide 0.052 0.022
Zinc 0.262 0.109
TTO 0.124
Oil and grease (alternate monitoring parameter) 9.3 4.7
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
Chromium 0.61 0.25
Cyanide 0.41 0.17
Zinc 2.03 0.85
TTO 0.96
Oil and grease (alternate monitoring parameter) 73 36
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
Chromium 0.85 0.35
Cyanide 0.56 0.23
Zinc 2.83 1.18
TTO 1.34
Oil and grease (alternate monitoring parameter) 100 50

Code of Federal Regulations

[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11632, and 11633, Mar. 27, 1984, as amended at 53 FR 52369 and 52370, Dec. 27, 1988]
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:
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
Chromium 0.057 0.024
Cyanide 0.038 0.016
Zinc 0.190 0.079
TTO 0.090
Oil and grease (alternate monitoring parameter) 6.8 3.4
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
Chromium 0.59 0.24
Cyanide 0.39 0.16
Zinc 1.94 0.81
TTO 0.92
Oil and grease (alternate monitoring parameter) 69 35
Pollutant or pollutant property PSES
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
TTO 1.41
Oil and grease (alternate monitoring parameter) 110 53
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
Chromium 0.079 0.032
Cyanide 0.052 0.022
Zinc 0.262 0.109
TTO 0.124
Oil and grease (alternate monitoring parameter) 9.3 4.7
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
Chromium 0.61 0.25
Cyanide 0.41 0.17
Zinc 2.03 0.85
TTO 0.96
Oil and grease (alternate monitoring parameter) 73 36
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
Chromium 0.85 0.35
Cyanide 0.56 0.23
Zinc 2.83 1.18
TTO 1.34
Oil and grease (alternate monitoring parameter) 100 50

Code of Federal Regulations

[48 FR 49149, Oct. 24, 1983; 49 FR 11631, 11632, and 11633, Mar. 27, 1984, as amended at 53 FR 52369 and 52370, Dec. 27, 1988]