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§ 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 | ||
Copper | 9.58 | 5.04 |
Cyanide | 1.46 | 0.605 |
Lead | 2.12 | 1.01 |
Oil and grease | 101 | 60.5 |
TSS | 207 | 98.3 |
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 | ||
Copper | 0.028 | 0.015 |
Cyanide | 0.004 | 0.002 |
Lead | 0.006 | 0.003 |
Oil and grease | 0.292 | 0.175 |
TSS | 0.599 | 0.285 |
pH | ( 1) | ( 1) |