Statutes, codes, and regulations
Code of Federal Regulations
Title 40 - PROTECTION OF ENVIRONMENTChapter I - ENVIRONMENTAL PROTECTION AGENCYSubchapter N - EFFLUENT GUIDELINES AND STANDARDSPart 471 - NONFERROUS METALS FORMING AND METAL POWDERS POINT SOURCE CATEGORY
Subpart J - METALS POWDERS SUBCATEGORY
Section 471.103 - New source performance standards (NSPS)

40 C.F.R. § 471.103

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Current through October 31, 2024
Section 471.103 - New source performance standards (NSPS)

Any new source subject to this subpart must achieve the following new source performance standards (NSPS). The mass of pollutants in the metal powder process wastewater shall not exceed the following values:

(a)Metal powder production atom-ization wastewater.

Subpart J-NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of powder wet atomized
Copper9.585.04
Cyanide1.460.605
Lead2.121.01
Oil and grease10160.5
TSS20798.3
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(b)Sizing spent emulsions.

Subpart J-NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of powder sized
Copper0.0280.015
Cyanide0.0040.002
Lead0.0060.003
Oil and grease0.2920.175
TSS0.5990.285
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(c)Oil-resin impregnation wastewater-subpart J-NSPS. There shall be no discharge of process wastewater pollutants.
(d)Steam treatment wet air pollution control scrubber blowdown.

Subpart J-NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of powder metallurgy parts steam treated
Copper0.1510.079
Cyanide0.0230.010
Lead0.0330.016
Oil and grease1.590.951
TSS3.251.55
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(e)Tumbling, burnishing and cleaning wastewater.

Subpart J-NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of powder metallurgy parts tumbled, burnished, or cleaned
Copper0.8360.440
Cyanide0.1280.053
Lead0.1850.088
Oil and grease8.805.28
TSS18.18.58
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(f)Sawing or grinding spent neat oils-subpart J-NSPS. There shall be no discharge of process wastewater pollutants.
(g)Sawing or grinding spent emulsions.

Subpart J-NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of powder metallurgy parts sawed or ground with emulsions
Copper0.0350.018
Cyanide0.0050.002
Lead0.0080.004
Oil and grease0.3620.217
TSS0.7420.353
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(h)Sawing or grinding contact cooling waterr.

Subpart J-NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of powder sawed or ground with contact cooling water
Copper3.081.62
Cyanide0.4700.195
Lead0.6810.324
Oil and grease32.419.5
TSS66.431.6
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(i)Hot pressing contact cooling water.

Subpart J-NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of powder cooled after pressing
Copper1.670.880
Cyanide0.2550.106
Lead0.3700.176
Oil and grease17.610.6
TSS36.117.2
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(j)Mixing wet air pollution control scrubber blowdown.

Subpart J-NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of powder mixed
Copper15.07.90
Cyanide2.290.948
Lead3.321.58
Oil and grease15894.8
TSS324154
pH(1)(1)

1 Within the range of 7.5 to 10.0 at all times.

(k)Degreasing spent solvents-subpart J-NSPS. There shall be no discharge of process wastewater pollutants.

40 C.F.R. §471.103

50 FR 34270, Aug. 23, 1985; 51 FR 2889, Jan. 22, 1986