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]
§ 467.44 - New source performance standards.

Any new source subject to this subpart must achieve the following performance standards. The discharge of wastewater pollutants from the core shall not exceed the values set forth below:

Subpart D Core
Pollutant or pollutant property NSPS
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
Aluminum0.3050.135
Oil and grease0.500.50
Suspended solids0.750.60
pH( 1)( 1)

1 Within the range of 7.0 to 10 at all times.

Subpart D Forging Scrubber Liquor
Pollutant or pollutant property NSPS
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
Zinc0.0960.04
Aluminum0.5760.256
Oil and grease0.9430.95
Suspended solids1.421.13
pH( 1)( 1)

1 Within the range of 7.0 to 10 at all times.

Subpart D Solution Heat Treatment Contact Cooling Water
Pollutant or pollutant property NSPS
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum quenched
Chromium0.760.31
Cyanide0.410.163
Zinc2.080.86
Aluminum12.455.52
Oil and grease20.3720.37
Suspended solids30.5624.45
pH( 1)( 1)

1 Within the range of 7.0 to 10 at all times.

Subpart D Cleaning or Etching Bath
Pollutant or pollutant property NSPS
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium0.0660.027
Cyanide0.0360.015
Zinc0.1830.075
Aluminum1.0940.485
Oil and grease1.791.79
Suspended solids2.692.15
pH( 1)( 1)

1 Within the range of 7.0 to 10 at all times.

Subpart D Cleaning or Etching Rinse
Pollutant or pollutant property NSPS
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
Aluminum8.53.77
Oil and grease13.9113.91
Suspended solids20.8716.69
pH( 1)( 1)

1 Within the range of 7.0 to 10 at all times.

Subpart D Cleaning or Etching Scrubber Liquor
Pollutant or pollutant property NSPS
Maximum for any 1 day Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched
Chromium0.720.29
Cyanide0.390.155
Zinc1.970.812
Aluminum11.815.24
Oil and grease19.3319.33
Suspended solids29.0023.20
pH( 1)( 1)

1 Within the range of 7.0 to 10 at all times.

[48 FR 49149, Oct. 24, 1983; 49 FR 11633, 11635, Mar. 27, 1984]
source: 48 FR 49149, Oct. 24, 1983, unless otherwise noted.
cite as: 40 CFR 467.44
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