Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System › Chapter NR 257 - Aluminum forming › Subchapter I - Rolling With Neat Oils Subcategory › Section NR 257.14 - New source performance standards

Current through June 24, 2024
Any new source subject to this subchapter shall achieve the
					 following performance standards:
Table 15
Core with an annealing furnace scrubber
					 NSPS
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
0.030
0.0123
Cyanide
0.016
0.0065
Zinc
0.084
0.0343
Aluminum
0.499
0.221
Oil and grease
0.817
0.817
Suspended solids
1.225
0.980
pH
(1)
(1)
1 Within the range of 7.0 to 10
					 at all times.
Table 16
Core without an annealing furnace scrubber
					 NSPS
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
0.021
0.0083
Cyanide
0.011
0.0044
Zinc
0.057
0.023
Aluminum
0.338
0.150
Oil and grease
0.553
0.553
Suspended solids
0.830
0.664
pH
(1)
(1)
1 Within the range of 7.0 to 10
					 at all times.
Table 17
Continuous sheet casting spent lubricant
					 NSPS
Pollutant or pollutant property
Maximum for any 1 day
Maximum for monthly average
mg/off-kg (lb/million off-lbs) of aluminum
								  cast
Chromium
0.00073
0.00029
Cyanide
0.00039
0.00016
Zinc
0.0020
0.00082
Aluminum
0.012
0.0053
Oil and grease
0.0197
0.019
Suspended solids
0.0295
0.022
pH
(1)
(1)
1 Within the range of 7.0 to 10
					 at all times.
Table 18
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
0.17
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 19
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 20
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
3.70
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 21
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
0.715
0.29
Cyanide
0.387
0.16
Zinc
1.97
0.81
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.