Wis. Admin. Code Department of Natural Resources NR 273.104
Any new source subject to this subchapter shall achieve the following standards:
Table 10-17
Metal Powders
Metal Powder Production 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 powder wet atomized | |
Copper | 9.58 | 5.04 |
Cyanide | 1.46 | 0.605 |
Lead | 2.12 | 1.01 |
Oil and grease | 101 | 60.5 |
Total suspended solids | 207 | 98.3 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-18
Metal Powders
Sizing 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 powder sized | |
Copper | 0.028 | 0.015 |
Cyanide | 0.004 | 0.002 |
Lead | 0.006 | 0.003 |
Oil and grease | 0.292 | 0.175 |
Total suspended solids | 0.599 | 0.285 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-19
Metal Powders
Steam Treatment
Wet Air Pollution Control Scrubber Blowdown
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of powder metallurgy parts steam treated | |
Copper | 0.151 | 0.079 |
Cyanide | 0.023 | 0.010 |
Lead | 0.033 | 0.016 |
Oil and grease | 1.59 | 0.951 |
Total suspended solids | 3.25 | 1.55 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-20
Metal Powders
Tumbling, Burnishing, and Cleaning Wastewater
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of powder metallurgy parts tumbled, burnished, or cleaned | |
Copper | 0.836 | 0.440 |
Cyanide | 0.128 | 0.053 |
Lead | 0.185 | 0.088 |
Oil and grease | 8.80 | 5.28 |
Total suspended solids | 18.1 | 8.58 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-21
Metal Powders
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 powder metallurgy parts sawed or ground with emulsion | |
Copper | 0.035 | 0.018 |
Cyanide | 0.005 | 0.002 |
Lead | 0.008 | 0.004 |
Oil and grease | 0.362 | 0.217 |
Total suspended solids | 0.742 | 0.353 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-22
Metal Powders
Sawing or Grinding 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 powder metallurgy parts sawed or ground with contact cooling water | |
Copper | 3.08 | 1.62 |
Cyanide | 0.470 | 0.195 |
Lead | 0.681 | 0.324 |
Oil and grease | 32.4 | 19.5 |
Total suspended solids | 66.4 | 31.6 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-23
Metal Powders
Hot Pressing 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 powder cooled after pressing | |
Copper | 1.67 | 0.880 |
Cyanide | 0.255 | 0.106 |
Lead | 0.370 | 0.176 |
Oil and grease | 17.6 | 10.6 |
Total suspended solids | 36.1 | 17.2 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Table 10-24
Metal Powders
Mixing Wet Air Pollution Control Scrubber Blowdown
NSPS | ||
Maximum for any 1 day | Maximum for monthly average | |
Pollutant or pollutant property | mg/off-kg (pounds per million off-pounds) of powder mixed | |
Copper | 15.0 | 7.90 |
Cyanide | 2.29 | 0.948 |
Lead | 3.32 | 1.58 |
Oil and grease | 158 | 94.8 |
Total suspended solids | 324 | 154 |
pH | (1) | (1) |
(1) Within the range of 7.5 to 10.0 at all times
Wis. Admin. Code Department of Natural Resources NR 273.104