Wis. Admin. Code Department of Natural Resources NR 257.13
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 the application of BAT:
Table 8
Core with an annealing furnace scrubber BAT
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum rolled with neat oils | ||
Chromium | 0.036 | 0.015 |
Cyanide | 0.024 | 0.0098 |
Zinc | 0.119 | 0.050 |
Aluminum | 0.525 | 0.257 |
Table 9
Core without an annealing furnace scrubber BAT
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum rolled with neat oils | ||
Chromium | 0.025 | 0.010 |
Cyanide | 0.016 | 0.0067 |
Zinc | 0.081 | 0.034 |
Aluminum | 0.356 | 0.174 |
Table 10
Continuous sheet casting spent lubricant BAT
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum sheet cast | ||
Chromium | 0.00086 | 0.00035 |
Cyanide | 0.00057 | 0.00024 |
Zinc | 0.00287 | 0.0012 |
Aluminum | 0.0127 | 0.0062 |
Table 11
Solution heat treatment contact cooling water BAT
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum quenched | ||
Chromium | 0.897 | 0.367 |
Cyanide | 0.591 | 0.245 |
Zinc | 2.974 | 1.243 |
Aluminum | 13.10 | 6.518 |
Table 12
Cleaning or etching bath BAT
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 | 0.079 | 0.032 |
Cyanide | 0.052 | 0.022 |
Zinc | 0.262 | 0.109 |
Aluminum | 1.151 | 0.573 |
Table 13
Cleaning or etching rinse and hot water seal BAT
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 | 0.612 | 0.251 |
Cyanide | 0.404 | 0.167 |
Zinc | 2.031 | 0.849 |
Aluminum | 8.944 | 4.450 |
Table 14
Cleaning or etching scrubber liquor
BAT
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 | 0.851 | 0.348 |
Cyanide | 0.561 | 0.232 |
Zinc | 2.822 | 1.179 |
Aluminum | 12.43 | 6.186 |
Wis. Admin. Code Department of Natural Resources NR 257.13