Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

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 representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT): (a) Rolling spent emulsions. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth rolled with emulsion Antimony 0.067 0.030 Lead 0.010 0.005 (b) Rolling spent soap solutions. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth rolled with soap solutions Antimony 0.120 0.055 Lead 0.018 0.009 (c) Drawing spent neat oils—subpart A—BAT. There shall be no discharge of process wastewater pollutants. (d) Drawing spent emulsions. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth drawn with emulsions Antimony 0.080 0.034 Lead 0.011 0.005 (e) Drawing spent soap solutions. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth drawn with soap solutions Antimony 0.022 0.010 Lead 0.003 0.002 (f) Extrusion press and solution heat treatment contact colling water. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds/per million off-pounds) of lead-tin-bismuth heat treated Antimony 0.414 0.185 Lead 0.061 0.030 (g) Extrusion press hydraulic fluid leakage. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds/per million off-pounds) of lead-tin-bismuth extruded Antimony 0.158 0.071 Lead 0.023 0.011 (h) Continuous strip casting contact cooling water. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth cast by the continuous strip method Antimony 0.003 0.001 Lead 0.0004 0.0002 (i) Semi-continuous ingot casting contact cooling water. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth cast by the continuous strip method Antimony 0.009 0.004 Lead 0.001 0.0006 (j) Shot casting contact cooling water. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth shot cast Antimony 0.107 0.048 Lead 0.016 0.008 (k) Shot-forming wet air pollution control scrubber blowdown. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth shot formed Antimony 0.169 0.076 Lead 0.025 0.012 (l) Alkaline cleaning spent baths. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth alkaline cleaned Antimony 0.345 0.154 Lead 0.051 0.024 (m) Alkaline cleaning rinse. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth alkaline cleaned Antimony 0.678 0.302 Lead 0.099 0.047 (n) Swaging spent emulsions. Subpart A—BAT Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/off-kg (pounds per million off-pounds) of lead-tin-bismuth swaged with emulsion Antimony 0.005 0.002 Lead 0.0008 0.0004 (o) Degreasing spent solvents—subpart A—BAT. There shall be no discharge of process wastewater pollutants. [50 FR 34270, Aug. 23, 1985; 51 FR 2884, Jan. 22, 1986]