Wis. Admin. Code Department of Natural Resources NR 257.52
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 BPT:
Table 125
Core operation BPT
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum drawn with neat oils | ||
Chromium | 0.022 | 0.0090 |
Cyanide | 0.015 | 0.0050 |
Zinc | 0.073 | 0.031 |
Aluminum | ||
Oil and grease | 0.97 | 0.598 |
Suspended solids | 2.04 | 0.972 |
pH | (1) | (1) |
1 Within the range of 7.0 to 10 at all times.
Table 126
Continuous rod casting spent lubricant BPT
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum rod cast | ||
Chromium | 0.00086 | 0.00035 |
Cyanide | 0.00057 | 0.00024 |
Zinc | 0.00287 | 0.0012 |
Aluminum | 0.0127 | 0.0063 |
Oil and grease | 0.0393 | 0.0236 |
Suspended solids | 0.0805 | 0.0383 |
pH | (1) | (1) |
1 Within the range of 7.0 to 10 at all times.
Table 127
Continuous rod casting contact cooling water BPT
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum rod cast | ||
Chromium | 0.684 | 0.28 |
Cyanide | 0.451 | 0.187 |
Zinc | 2.271 | 0.949 |
Aluminum | 10.00 | 4.976 |
Oil and grease | 31.10 | 18.66 |
Suspended solids | 63.76 | 30.322 |
pH | (1) | (1) |
1Within the range of 7.0 to 10 at all times.
Table 128
Solution heat treatment contact cooling water BPT
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/off-kg (lb/million off-lbs) of aluminum quenched | ||
Chromium | 3.39 | 1.39 |
Cyanide | 2.24 | 0.93 |
Zinc | 11.25 | 4.70 |
Aluminum | 49.55 | 24.66 |
Oil and grease | 154.10 | 92.46 |
Suspended solids | 315.91 | 150.25 |
pH | (1) | (1) |
1 Within the range of 7.0 to 10 at all times.
Table 129
Cleaning or etching bath BPT
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 | 0.26 | 0.11 |
Aluminum | 1.150 | 0.57 |
Oil and grease | 3.58 | 2.15 |
Suspended solids | 7.34 | 3.49 |
pH | (1) | (1) |
1 Within the range of 7.0 to 10 at all times.
Table 130
Cleaning or etching rinse and hot water seal BPT
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 | 6.12 | 2.51 |
Cyanide | 4.40 | 1.67 |
Zinc | 20.31 | 8.49 |
Aluminum | 89.46 | 44.52 |
Oil and grease | 278.24 | 166.95 |
Suspended solids | 570.39 | 271.29 |
pH | (1) | (1) |
1 Within the range of 7.0 to 10 at all times.
Table 131
Cleaning or etching scrubber liquor BPT
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 | 7.00 | 2.86 |
Cyanide | 4.61 | 1.91 |
Zinc | 23.22 | 9.70 |
Aluminum | 102.24 | 50.88 |
Oil and grease | 318.00 | 190.80 |
Suspended solids | 651.90 | 310.05 |
pH | (1) | (1) |
1 Within the range of 7.0 to 10 at all times.
Wis. Admin. Code Department of Natural Resources NR 257.52