Except as provided in 40 CFR 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
wastewater pollutants in aluminum forming process wastewater
introduced into a POTW shall not exceed the following values:
Subpart A Core With an Annealing Furnace Scrubber
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 neat oils
Chromium
0.030
0.013
Cyanide
0.017
0.007
Zinc
0.084
0.035
TTO
0.057
Oil and grease
(alternate monitoring parameter)
0.817
0.817
Subpart A Core Without an Annealing Furnace Scrubber
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 neat oils
Chromium
0.021
0.009
Cyanide
0.011
0.005
Zinc
0.057
0.024
TTO
0.038
Oil and grease
(alternate monitoring parameter)
0.54
0.54
Subpart A Continuous Sheet Casting Lubricant
Pollutant or
pollutant property
PSNS
Maximum for any 1 day
Maximum for monthly
average
mg/off-kg
(lb/million off-lbs) of aluminum cast
Chromium
0.00073
0.00029
Cyanide
0.00039
0.00016
Zinc
0.0020
0.00082
TTO
0.0014
Oil and grease
(alternate monitoring parameter)
0.020
0.020
Subpart A 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
Chromium
0.76
0.31
Cyanide
0.41
0.17
Zinc
2.08
0.86
TTO
1.41
Oil and grease
(alternate monitoring parameter)
20.37
20.37
Subpart A 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
Chromium
0.067
0.027
Cyanide
0.036
0.015
Zinc
0.183
0.075
TTO
0.124
Oil and grease
(alternate monitoring parameter)
1.79
1.79
Subpart A 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
Chromium
0.52
0.21
Cyanide
0.28
0.11
Zinc
1.42
0.59
TTO
0.96
Oil and grease
(alternate monitoring parameter)
13.91
13.91
Subpart A 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