Wis. Admin. Code Department of Natural Resources NR 273.044
Any new source subject to this subchapter shall achieve the following standards:
Table 4-33
Precious Metals
Rolling Spent Emulsions
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals rolled with emulsions | |
Cadmium | 0.026 | 0.012 |
Copper | 0.147 | 0.077 |
Cyanide | 0.023 | 0.010 |
Silver | 0.032 | 0.013 |
Oil and grease | 1.54 | 0.925 |
Total suspended solids | 3.16 | 1.51 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-34
Precious Metals
Drawing Spent Emulsions
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals drawn with emulsions | |
Cadmium | 0.017 | 0.007 |
Copper | 0.091 | 0.048 |
Cyanide | 0.014 | 0.006 |
Silver | 0.020 | 0.008 |
Oil and grease | 0.950 | 0.570 |
Total suspended solids | 1.95 | 0.927 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-35
Precious Metals
Drawing Spent Soap Solutions
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals drawn with soap solutions | |
Cadmium | 0.001 | 0.0005 |
Copper | 0.006 | 0.003 |
Cyanide | 0.0009 | 0.0004 |
Silver | 0.002 | 0.0006 |
Oil and grease | 0.063 | 0.038 |
Total suspended solids | 0.128 | 0.061 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-36
Precious Metals
Metal Powder Production
Wet Atomization Wastewater
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals powder wet atomized | |
Cadmium | 2.27 | 1.00 |
Copper | 12.7 | 6.68 |
Cyanide | 1.94 | 0.802 |
Silver | 2.74 | 1.14 |
Oil and grease | 134 | 80.2 |
Total suspended solids | 274 | 131 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-37
Precious Metals
Heat Treatment Contact Cooling Water
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of extruded precious metals heat treated | |
Cadmium | 0.142 | 0.063 |
Copper | 0.793 | 0.417 |
Cyanide | 0.121 | 0.050 |
Silver | 0.171 | 0.071 |
Oil and grease | 8.34 | 5.01 |
Total suspended solids | 17.1 | 8.13 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-38
Precious Metals
Semi-Continuous or Continuous Contact Cooling Water
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals cast by the semi-continuous or continuous method | |
Cadmium | 0.350 | 0.155 |
Copper | 1.96 | 1.03 |
Cyanide | 0.299 | 0.124 |
Silver | 0.423 | 0.175 |
Oil and grease | 20.6 | 12.4 |
Total suspended solids | 42.3 | 20.1 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-39
Precious Metals
Direct Chill Casting Contact Cooling Water
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals cast by the direct chill method | |
Cadmium | 0.367 | 0.162 |
Copper | 2.05 | 1.08 |
Cyanide | 0.313 | 0.130 |
Silver | 0.443 | 0.184 |
Oil and grease | 21.6 | 13.0 |
Total suspended solids | 44.3 | 21.1 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-40
Precious Metals
Shot Casting Contact Cooling Water
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals shot cast | |
Cadmium | 0.125 | 0.055 |
Copper | 0.698 | 0.367 |
Cyanide | 0.107 | 0.044 |
Silver | 0.151 | 0.063 |
Oil and grease | 7.34 | 4.41 |
Total suspended solids | 15.1 | 7.16 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-41
Precious Metals
Pressure Bonding Contact Cooling Water
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals base metal pressure bonded | |
Cadmium | 0.029 | 0.013 |
Copper | 0.159 | 0.084 |
Cyanide | 0.024 | 0.010 |
Silver | 0.034 | 0.014 |
Oil and grease | 1.67 | 1.00 |
Total suspended solids | 3.43 | 1.63 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-42
Precious Metals
Surface Treatment Spent Baths
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals surface treated | |
Cadmium | 0.033 | 0.015 |
Copper | 0.183 | 0.097 |
Cyanide | 0.028 | 0.012 |
Silver | 0.040 | 0.017 |
Oil and grease | 1.93 | 1.16 |
Total suspended solids | 3.95 | 1.88 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-43
Precious Metals
Surface Treatment Rinse
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals surface treated | |
Cadmium | 0.210 | 0.093 |
Copper | 1.17 | 0.616 |
Cyanide | 0.179 | 0.074 |
Silver | 0.253 | 0.105 |
Oil and grease | 12.3 | 7.39 |
Total suspended solids | 25.3 | 12.0 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-44
Precious Metals
Alkaline Cleaning Spent Baths
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals alkaline cleaned | |
Cadmium | 0.021 | 0.009 |
Copper | 0.114 | 0.060 |
Cyanide | 0.018 | 0.007 |
Silver | 0.025 | 0.010 |
Oil and grease | 1.20 | 0.720 |
Total suspended solids | 2.46 | 1.17 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-45
Precious Metals
Alkaline Cleaning Rinse
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals alkaline cleaned | |
Cadmium | 0.381 | 0.168 |
Copper | 2.13 | 1.112 |
Cyanide | 0.325 | 0.135 |
Silver | 0.459 | 0.191 |
Oil and grease | 22.4 | 13.5 |
Total suspended solids | 45.9 | 21.9 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-46
Precious Metals
Alkaline Cleaning Prebonding Wastewater
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals and base metal cleaned prior to bonding | |
Cadmium | 0.400 | 0.174 |
Copper | 2.21 | 1.16 |
Cyanide | 0.337 | 0.139 |
Silver | 0.476 | 0.197 |
Oil and grease | 23.2 | 13.9 |
Total suspended solids | 47.6 | 22.6 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-47
Precious Metals
Tumbling or Burnishing Wastewater
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (poun pounds) of preci or burnished | ds per million off-ous metals tumbled |
Cadmium | 0.412 | 0.182 |
Copper | 2.300 | 1.21 |
Cyanide | 0.351 | 0.145 |
Silver | 0.496 | 0.206 |
Oil and grease | 24.2 | 14.5 |
Total suspended solids | 49.6 | 23.6 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 4-48
Precious Metals
Sawing or Grinding Spent Emulsions
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of precious metals sawed or ground with emulsions | |
Cadmium | 0.032 | 0.014 |
Copper | 0.178 | 0.094 |
Cyanide | 0.027 | 0.011 |
Silver | 0.038 | 0.016 |
Oil and grease | 1.87 | 1.12 |
Total suspended solids | 3.83 | 1.82 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Wis. Admin. Code Department of Natural Resources NR 273.044