Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System › Chapter NR 273 - Nonferrous metals forming and metal powders › Subchapter VIII - Zinc › Section NR 273.083 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable

Current through June 24, 2024
Except as provided in
					 40 CFR 125.30
					 to
					 125.32, any
					 existing point source subject to this subchapter shall achieve the following
					 effluent limitations representing the degree of effluent reduction attainable
					 by application of BAT:
Table 8-12
Zinc
Rolling Spent Emulsions
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of zinc
								  rolled with emulsions
Chromium
0.0005
0.0002
Copper
0.002
0.0009
Cyanide
0.0003
0.0001
Zinc
0.002
0.0006
Table 8-13
Zinc
Rolling Contact Cooling Water
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of zinc
								  rolled with contact cooling water
Chromium
0.020
0.009
Copper
0.069
0.033
Cyanide
0.011
0.004
Zinc
0.055
0.023
Table 8-14
Zinc
Drawing Spent Emulsions
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of zinc
								  drawn with emulsions
Chromium
0.002
0.0009
Copper
0.008
0.004
Cyanide
0.001
0.0005
Zinc
0.006
0.003
Table 8-15
Zinc
Direct Chill Casting Contact Cooling Water
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of zinc
								  cast by the direct chill method
Chromium
0.019
0.008
Copper
0.065
0.031
Cyanide
0.010
0.004
Zinc
0.052
0.021
Table 8-16
Zinc
Heat Treatment Contact Cooling Water
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of zinc
								  heat treated
Chromium
0.029
0.012
Copper
0.098
0.047
Cyanide
0.016
0.006
Zinc
0.078
0.032
Table 8-17
Zinc
Surface Treatment Spent Baths
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of zinc
								  surface treated
Chromium
0.033
0.014
Copper
0.114
0.054
Cyanide
0.018
0.007
Zinc
0.091
0.038
Table 8-18
Zinc
Surface Treatment Rinse
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of zinc
								  surface treated
Chromium
0.133
0.054
Copper
0.457
0.219
Cyanide
0.072
0.029
Zinc
0.365
0.151
Table 8-19
Zinc
Alkaline Cleaning Spent Baths
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of zinc
								  alkaline cleaned
Chromium
0.002
0.0006
Copper
0.005
0.002
Cyanide
0.0007
0.0003
Zinc
0.004
0.002
Table 8-20
Zinc
Alkaline Cleaning Rinse
BAT Effluent Limita
tions
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of zinc
								  alkaline cleaned
Chromium
0.626
0.254
Copper
2.17
1.03
Cyanide
0.338
0.135
Zinc
1.73
0.710
Table 8-21
Zinc
Sawing or Grinding Spent Emulsions
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of zinc
								  sawed or ground with emulsions
Chromium
0.009
0.004
Copper
0.031
0.015
Cyanide
0.005
0.002
Zinc
0.025
0.010
Table 8-22
Zinc
Electrocoating Rinse
BAT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of zinc
								  electrocoated
Chromium
0.085
0.035
Copper
0.293
0.140
Cyanide
0.046
0.019
Zinc
0.234
0.096