U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jul 12, 2024

§ 467.65 - 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 values set forth below:

Subpart F Core
Pollutant or pollutant property PSES
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
Zinc0.6810.285
TTO0.32
Oil and grease (alternate monitoring parameter)2512
Subpart F Continuous Rod Casting Lubricant
Pollutant or pollutant property PSES
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum rod cast
Chromium0.00090.0004
Cyanide0.00060.0003
Zinc0.00290.0012
TTO0.0014
Oil and grease (alternate monitoring parameter)0.100.052
Subpart F Continuous Rod 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 rod cast
Chromium0.0860.035
Cyanide0.0560.024
Zinc0.2830.119
TTO0.134
Oil and grease (alternate monitoring parameter105.1
Subpart F Solution Heat Treatment Contact Cooling Water
Pollutant or pollutant property PSES
Maximum for any 1 day Maximum for monthy average
mg/off-kg (lb/million off-lbs) of aluminum quenched
Chromium0.8960.367
Cyanide0.5910.245
Zinc2.981.25
TTO1.41
Oil and grease (alternate monitoring parameter)11053
Subpart F Cleaning or Etching Bath
Pollutant or pollutant property PSES
Maximum for any 1 day Maximum for monthy average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium0.0790.032
Cyanide0.0520.022
Zinc0.2620.11
TTO0.124
Oil and grease (alternate monitoring parameter)9.34.7
Subpart F Cleaning or Etching Rinse
Pollutant or pollutant property PSES
Maximum for any 1 day Maximum for monthy average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium0.6120.251
Cyanide0.4040.167
Zinc2.030.849
TTO0.96
Oil and grease (alternate monitoring parameter)7336
Subpart F Cleaning or Etching Scrubber Liquor
Pollutant or pollutant property PSES
Maximum for any 1 day Maximum for monthy average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium0.8510.348
Cyanide0.5610.232
Zinc2.821.18
TTO1.33
Oil and grease (alternate monitoring parameter)10050
[48 FR 49149, Oct. 24, 1983; 49 FR 11632, 11636, Mar. 27, 1984, as amended at 53 FR 52369, Dec. 27, 1988]