Wis. Admin. Code NR § 274.253
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 25-10
Primary Precious Metals and Mercury Smelter Wet Air Pollution Control
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of gold and silver smelted | |
Lead | 0.364 | 0.169 |
Mercury | 0.195 | 0.078 |
Silver | 0.377 | 0.156 |
Zinc | 1.326 | 0.546 |
Gold | 0.130 | |
Table 25-11
Primary Precious Metals and Mercury Silver Chloride Reduction Spent Solution
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of silver reduced in solution | |
Lead | 0.112 | 0.052 |
Mercury | 0.060 | 0.024 |
Silver | 0.116 | 0.048 |
Zinc | 0.408 | 0.168 |
Gold | 0.040 | |
Table 25-12
Primary Precious Metals and Mercury Electrolytic Cells Wet Air Pollution Control
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of gold refined electrolytically | |
Lead | 5.544 | 2.574 |
Mercury | 2.970 | 1.188 |
Silver | 5.742 | 2.376 |
Zinc | 20.200 | 8.316 |
Gold | 1.980 | |
Table 25-13
Primary Precious Metals and Mercury Electrolyte Preparation Wet Air Pollution Control
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/troy ounce of silver in the produced electrolyte | |
Lead | 0.014 | 0.007 |
Mercury | 0.008 | 0.003 |
Silver | 0.015 | 0.006 |
Zinc | 0.051 | 0.021 |
Gold | 0.005 | |
Table 25-14
Primary Precious Metals and Mercury Calciner Wet Air Pollution Control
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/kg (pounds per million pounds) of mercury condensed | |
Lead | 6.160 | 2.860 |
Mercury | 3.300 | 1.320 |
Silver | 6.380 | 2.640 |
Zinc | 22.440 | 9.240 |
Gold | 2.200 | |
Table 25-15
Primary Precious Metals and Mercury Calcine Quench Water
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/kg (pounds per million pounds) of mercury condensed | |
Lead | 4.928 | 2.288 |
Mercury | 2.640 | 1.056 |
Silver | 5.104 | 2.112 |
Zinc | 17.950 | 7.392 |
Gold | 1.760 | |
Table 25-16
Primary Precious Metals and Mercury Calciner Stack Gas Contact Cooling Water
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/kg (pounds per million pounds) of mercury condensed | |
Lead | 1.162 | 0.540 |
Mercury | 0.623 | 0.249 |
Silver | 1.204 | 0.498 |
Zinc | 4.233 | 1.743 |
Gold | 0.415 | |
Table 25-17
Primary Precious Metals and Mercury Condenser Blowdown
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/kg (pounds per million pounds) of mercury condensed | |
Lead | 3.864 | 1.794 |
Mercury | 2.070 | 0.828 |
Silver | 4.002 | 1.656 |
Zinc | 14.080 | 5.796 |
Gold | 1.380 | |
Table 25-18
Primary Precious Metals and Mercury Mercury Cleaning Bath Water
BAT Effluent Limitations | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/kg (pounds per million pounds) of mercury condensed | |
Lead | 0.392 | 0.182 |
Mercury | 0.210 | 0.084 |
Silver | 0.406 | 0.168 |
Zinc | 1.428 | 0.588 |
Gold | 0.140 | |
Wis. Admin. Code Department of Natural Resources § NR 274.253