Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

§ 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)
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