40 C.F.R. § 471.101

Current through September 30, 2024
Section 471.101 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)

Except as provided in 40 CFR 125.30 through 125.32 , any existing point source subject to this subpart must achieve the following effluent limitations for the process operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

(a)Metal powder production atomization wastewater.

Subpart J-BPT

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 emulsion.

Subpart J-BPT

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-BPT. There shall be no discharge of process wastewater pollutants.
(d)Steam treatment wet air pollution control scrubber blowdown.

Subpart J-BPT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of power metallurgy parts steam treated
Copper1.510.792
Cyanide0.2300.095
Lead0.3330.159
Oil and grease15.99.51
TSS32.515.5
pH(1)(1)

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

(e)Tumbling, burnishing and cleaning wastewater.

Subpart J-BPT

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
Copper8.364.40
Cyanide1.280.528
Lead1.850.880
Oil and grease88.052.800
TSS18185.8
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-BPT. There shall be no discharge of process wastewater pollutants.
(g)Sawing or grinding spent emulsion.

Subpart J-BPT

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 emulsion
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 water.

Subpart J-BPT

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 contact cooling
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-BPT

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
Copper16.78.80
Cyanide2.551.06
Lead3.701.76
Oil and grease176106
TSS361172
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-BPT

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-BPT. There shall be no discharge of process wastewater pollutants.

40 C.F.R. §471.101

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