Wis. Admin. Code Department of Natural Resources NR 274.263
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 26-15
Secondary Precious Metals Furnace Wet Air Pollution Control
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of precious metals, including silver, incinerated or smelted | |
Copper | 5.760 | 2.745 |
Cyanide | 0.900 | 0.360 |
Zinc | 4.590 | 1.890 |
Combined metals | 1.350 | |
Ammonia (as N) | 599.900 | 263.700 |
Table 26-16
Secondary Precious Metals Raw Material Granulation
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of precious metal in the granulated raw material | |
Copper | 0.819 | 0.390 |
Cyanide | 0.128 | 0.051 |
Zinc | 0.653 | 0.269 |
Combined metals | 0.192 | |
Ammonia (as N) | 85.310 | 37.500 |
Table 26-17
Secondary Precious Metals Spent Plating Solutions
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/liter of spent plating solution used as a raw material | |
Copper | 1.280 | 0.610 |
Cyanide | 0.200 | 0.080 |
Zinc | 1.020 | 0.420 |
Combined metals | 0.300 | |
Ammonia (as N) | 133.300 | 58.600 |
Table 26-18
Secondary Precious Metals Spent Cyanide Stripping Solutions
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of gold produced by cyanide stripping | |
Copper | 4.736 | 2.257 |
Cyanide | 0.740 | 0.296 |
Zinc | 3.774 | 1.554 |
Combined metals | 1.110 | |
Ammonia (as N) | 493.200 | 216.800 |
Table 26-19
Secondary Precious Metals Refinery Wet Air Pollution Control(1)
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of precious metals, including silver, produced in the refinery | |
Copper | 1.280 | 0.610 |
Cyanide | 0.200 | 0.080 |
Zinc | 1.020 | 0.420 |
Combined metals | 0.300 | |
Ammonia (as N) | 133.300 | 58.600 |
(1) This allowance applies to either acid or alkaline wet air pollution control scrubbers. If both acid and alkaline wet air pollution control scrubbers are present in a particular facility, the same allowance applies to each.
Table 26-20
Secondary Precious Metals Gold Solvent Extraction Raffinate and Wash Water
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of gold produced by solvent extraction | |
Copper | 0.806 | 0.384 |
Cyanide | 0.126 | 0.050 |
Zinc | 0.643 | 0.265 |
Combined metals | 0.189 | |
Ammonia (as N) | 83.980 | 36.920 |
Table 26-21
Secondary Precious Metals Gold Spent Electrolyte
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of gold produced by electrolysis | |
Copper | 0.0111 | 0.0053 |
Cyanide | 0.0017 | 0.0007 |
Zinc | 0.0089 | 0.0037 |
Combined metals | 0.0030 | |
Ammonia (as N) | 1.1600 | 0.5100 |
Table 26-22
Secondary Precious Metals Gold Precipitation and Filtration
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of gold precipitated | |
Copper | 5.632 | 2.684 |
Cyanide | 0.880 | 0.352 |
Zinc | 4.488 | 1.848 |
Combined metals | 1.320 | |
Ammonia (as N) | 586.500 | 257.800 |
Table 26-23
Secondary Precious Metals Platinum Precipitation and Filtration
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of platinum precipitated | |
Copper | 6.656 | 3.172 |
Cyanide | 1.040 | 0.416 |
Zinc | 5.304 | 2.184 |
Combined metals | 1.560 | |
Ammonia (as N) | 693.200 | 304.700 |
Table 26-24
Secondary Precious Metals Palladium Precipitation and Filtration
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of palladium precipitated | |
Copper | 7.680 | 3.660 |
Cyanide | 1.200 | 0.480 |
Zinc | 6.120 | 2.520 |
Combined metals | 1.800 | |
Ammonia (as N) | 799.800 | 351.600 |
Table 26-25
Secondary Precious Metals Other Platinum Group Metals Precipitation and Filtration
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of other platinum group metals precipitated | |
Copper | 6.656 | 3.172 |
Cyanide | 1.040 | 0.416 |
Zinc | 5.304 | 2.184 |
Combined metals | 1.560 | |
Ammonia (as N) | 693.200 | 304.700 |
Table 26-26
Secondary Precious Metals Spent Solution for PGC Salt Production
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of gold contained in PGC product | |
Copper | 1.152 | 0.549 |
Cyanide | 0.180 | 0.072 |
Zinc | 0.918 | 0.376 |
Combined metals | 0.270 | |
Ammonia (as N) | 120.000 | 52.740 |
Table 26-27
Secondary Precious Metals Equipment and Floor Wash
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of precious metals, including silver, produced in the refinery | |
Copper | 0.000 | 0.000 |
Cyanide | 0.000 | 0.000 |
Zinc | 0.000 | 0.000 |
Combined metals | 0.000 | |
Ammonia (as N) | 0.000 | 0.000 |
Table 26-28
Secondary Precious Metals Preliminary Treatment
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of total precious metals produced through this operation | |
Copper | 64.000 | 30.500 |
Cyanide | 10.000 | 4.000 |
Zinc | 51.000 | 21.000 |
Combined metals | 15.000 | |
Ammonia (as N) | 6,665.000 | 2,930.000 |
Wis. Admin. Code Department of Natural Resources NR 274.263