40 CFR § 467.45 - Pretreatment standards for existing sources.

§ 467.45 Pretreatment standards for existing sources.

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduced 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 D
Core
Pollutant or pollutant property PSES
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum forged
Chromium 0.022 0.009
Cyanide 0.015 0.006
Zinc 0.073 0.031
TTO 0.035
Oil and grease (alternate monitoring parameter) 2.6 1.3
Subpart D
Forging 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 forged
Chromium 0.042 0.017
Cyanide 0.028 0.011
Zinc 0.14 0.058
TTO 0.065
Oil and grease (alternate monitoring parameter) 4.9 2.5
Subpart D
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 0.897 0.37
Cyanide 0.591 0.25
Zinc 2.98 1.24
TTO 1.41
Oil and grease (alternate monitoring parameter) 110 53
Subpart D
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
Chromium 0.079 0.032
Cyanide 0.052 0.022
Zinc 0.26 0.11
TTO 0.123
Oil and grease (alternate monitoring parameter) 9.3 4.7
Subpart D
Cleaning or Etching Rinse
Pollutant or pollutant property PSES
Maximum for any 1 day Maximum for monthly average
mb/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium 1.7 0.7
Cyanide 1.2 0.5
Zinc 5.7 2.4
TTO 2.7
Oil and grease (alternate monitoring parameter) 200 100
Subpart D
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
Chromium 0.851 0.35
Cyanide 0.561 0.23
Zinc 2.82 1.18
TTO 1.34
Oil and grease (alternate monitoring parameter) 100 50
[48 FR 49149, Oct. 24, 1983; 49 FR 11632, 11633, 11635, Mar. 27, 1984, as amended at 53 FR 52369, Dec. 27, 1988]

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