Regulations last checked for updates: Oct 18, 2024

Title 40 - Protection of Environment last revised: Oct 16, 2024
All TitlesTitle 40Chapter IPart 467Subpart D - Subpart D—Forging Subcategory
View all text of Subpart D [§ 467.40 - § 467.47]
§ 467.46 - Pretreatment standards for new sources.

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 values set forth below:

Subpart D Core
Pollutant or pollutant property PSNS
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum forged
Chromium0.0190.008
Cyanide0.0100.004
Zinc0.0510.021
TTO0.035
Oil and grease (alternate monitoring parameter)0.500.50
Subpart D Forging 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 forged
Chromium0.0350.014
Cyanide0.0190.008
Zinc0.0960.040
TTO0.065
Oil and grease (alternate monitoring parameter)0.950.95
Subpart D 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
Cyanide0.410.16
Zinc2.080.86
TTO1.41
Oil and grease (alternate monitoring parameter)20.3720.37
Subpart D 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
TTO0.124
Oil and grease (alternate monitoring parameter)1.791.79
Subpart D 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
TTO0.96
Oil and grease (alternate monitoring parameter)13.9113.91
Subpart D 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
Zinc1.970.812
TTO1.34
Oil and grease (alternate monitoring parameter)19.3319.33
[48 FR 49149, Oct. 24, 1983; 49 FR 11632, 11633, Mar. 27, 1984]
source: 48 FR 49149, Oct. 24, 1983, unless otherwise noted.
cite as: 40 CFR 467.46
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