Wis. Admin. Code Department of Natural Resources NR 257.44
Any new source subject to this subchapter shall achieve the following performance standards:
Table 107
Core operation NSPS
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum forged | ||
Chromium | 0.019 | 0.008 |
Cyanide | 0.010 | 0.004 |
Zinc | 0.051 | 0.021 |
Aluminum | 0.305 | 0.135 |
Oil and grease | 0.50 | 0.50 |
Suspended solids | 0.75 | 0.60 |
pH | (1) | (1) |
1 Within the range of 7.0 to 10 at all times.
Table 108
Forging scrubber liquor NSPS
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum forged | ||
Chromium | 0.035 | 0.014 |
Cyanide | 0.019 | 0.008 |
Zinc | 0.096 | 0.04 |
Aluminum | 0.576 | 0.256 |
Oil and grease | 0.943 | 0.95 |
Suspended solids | 1.42 | 1.13 |
pH | (1) | (1) |
Table 109
Solution heat treatment contact cooling water NSPS
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum quenched | ||
Chromium | 0.76 | 0.31 |
Cyanide | 0.41 | 0.163 |
Zinc | 2.08 | 0.86 |
Aluminum | 12.45 | 5.52 |
Oil and grease | 20.37 | 20.37 |
Suspended solids | 30.56 | 24.45 |
pH | (1) | (1) |
1 Within the range of 7.0 to 10 at all times.
Table 110
Cleaning or etching bath NSPS
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched | ||
Chromium | 0.066 | 0.027 |
Cyanide | 0.036 | 0.015 |
Zinc | 0.183 | 0.075 |
Aluminum | 1.094 | 0.485 |
Oil and grease | 1.79 | 1.79 |
Suspended solids | 2.69 | 2.15 |
pH | (1) | (1) |
1 Within the range of 7.0 to 10 at all times.
Table 111
Cleaning or etching rinse and hot water seal NSPS
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched | ||
Chromium | 0.52 | 0.21 |
Cyanide | 0.28 | 0.11 |
Zinc | 1.42 | 0.59 |
Aluminum | 8.50 | 3.77 |
Oil and grease | 13.91 | 13.91 |
Suspended solids | 20.87 | 16.69 |
pH | (1) | (1) |
1 Within the range of 7.0 to 10 at all times.
Table 112
Cleaning or etching scrubber liquor NSPS
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum cleaned or etched | ||
Chromium | 0.72 | 0.29 |
Cyanide | 0.39 | 0.155 |
Zinc | 1.97 | 0.812 |
Aluminum | 11.81 | 5.24 |
Oil and grease | 19.33 | 19.33 |
Suspended solids | 29.00 | 23.20 |
pH | (1) | (1) |
1 Within the range of 7.0 to 10 at all times.
Wis. Admin. Code Department of Natural Resources NR 257.44