Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System › Chapter NR 257 - Aluminum forming › Subchapter III - The Extrusion Subcategory › Section NR 257.36 - Pretreatment standards for new sources

Current through June 24, 2024
Except as provided in s.
					 NR
					 211.13, any new source subject to this subchapter
					 which introduces pollutants into a POTW shall comply with ch. NR 211 and
					 achieve the following pretreatment standards for new sources. Degassing
					 operations may not discharge wastewater pollutants.
Table 99
Core operation PSNS
Pollutant or pollutant property
Maximum for any 1 day
Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum
								  extruded
Chromium
0.13
0.05
Cyanide
0.07
0.03
Zinc
0.35
0.15
TTO
0.24
Oil and grease (alternate monitoring
								  parameter)
3.40
3.40
Table 100
Extrusion press leakage PSNS
Pollutant or pollutant property
Maximum for
any 1 day
Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum
								  extruded
Chromium
0.11
0.05
Cyanide
0.06
0.03
Zinc
0.31
0.13
TTO
0.21
Oil and grease (alternate monitoring
								  parameter)
2.98
2.98
Table 101
Direct chill casting contact cooling water
					 PSNS
Pollutant or pollutant property
Maximum for
any 1 day
Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum
								  cast
Chromium
0.49
0.20
Cyanide
0.27
0.11
Zinc
1.36
0.56
TTO
0.92
Oil and grease (alternate monitoring
								  parameter)
13.29
13.29
Table 102
Press heat treatment contact cooling water
					 PSNS
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
0.17
Zinc
2.08
0.86
TTO
1.41
Oil and grease (alternate monitoring
								  parameter)
20.37
20.37
Table 103
Solution heat treatment contact cooling water
					 PSNS
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
0.17
Zinc
2.08
0.86
TTO
1.41
Oil and grease (alternate monitoring
								  parameter)
20.37
20.37
Table 104
Cleaning or etching bath PSNS
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
0.067
0.027
Cyanide
0.036
0.015
Zinc
0.183
0.075
TTO
0.124
Oil and grease (alternate monitoring
								  parameter)
1.79
1.79
Table 105
Cleaning or etching rinse and hot water seal
					 PSNS
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
TTO
0.96
Oil and grease (alternate monitoring
								  parameter)
13.91
13.91
Table 106
Cleaning or etching scrubber liquor
					 PSNS
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
0.16
Zinc
1.97
0.81
TTO
1.34
Oil and grease (alternate monitoring
								  parameter)
19.33
19.33