Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System › Chapter NR 273 - Nonferrous metals forming and metal powders › Subchapter III - Nickel-Cobalt › Section NR 273.032 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available

Current through June 24, 2024
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 application of BPT:
Table 3-1
Nickel-Cobalt
Rolling Spent Emulsions
BPT
Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt rolled with emulsions
Chromium
0.075
0.031
Nickel
0.327
0.216
Fluoride
10.1
4.49
Oil and grease
3.4
2.04
Total suspended solids
6.97
3.32
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-2
Nickel-Cobalt
Rolling Contact Cooling Water
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt rolled with water
Chromium
1.66
0.679
Nickel
7.24
4.79
Fluoride
225
99.6
Oil and grease
75.4
45.3
Total suspended solids
155
73.5
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-3
Nickel-Cobalt
Drawing Spent Emulsions
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt drawn with emulsions
Chromium
0.042
0.017
Nickel
0.183
0.121
Fluoride
5.68
2.53
Oil and grease
1.91
1.15
Total suspended solids
3.91
1.86
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-4
Nickel-Cobalt
Extrusion Press or Solution Heat Treatment
Contact Cooling Water
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt heat treated
Chromium
0.037
0.015
Nickel
0.160
0.106
Fluoride
4.95
2.20
Oil and grease
1.67
0.999
Total suspended solids
3.41
1.63
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-5
Nickel-Cobalt
Extrusion Press Hydraulic Fluid Leakage
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt extruded
Chromium
0.102
0.042
Nickel
0.446
0.295
Fluoride
13.8
6.13
Oil and grease
4.64
2.79
Total suspended solids
9.51
4.53
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-6
Nickel-Cobalt
Forging Equipment Cleaning Wastewater
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt forged
Chromium
0.018
0.007
Nickel
0.077
0.051
Fluoride
2.38
1.06
Oil and grease
0.800
0.480
Total suspended solids
1.640
0.780
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-7
Nickel-Cobalt
Forging Contact Cooling Water
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  forged nickel-cobalt cooled with water
Chromium
0.209
0.086
Nickel
0.910
0.602
Fluoride
28.2
12.5
Oil and grease
9.48
5.69
Total suspended solids
19.5
9.25
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-8
Nickel-Cobalt
Forging Press Hydraulic Fluid Leakage
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt forged
Chromium
0.083
0.034
Nickel
0.359
0.238
Fluoride
11.2
4.94
Oil and grease
3.74
2.25
Total suspended solids
7.67
3.65
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-9
Nickel-Cobalt
Stationary Casting Contact Cooling Water
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt cast by stationary methods
Chromium
5.33
2.18
Nickel
23.3
15.4
Fluoride
720
320
Oil and grease
242
145
Total suspended solids
496
236
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-10
Nickel-Cobalt
Metal Powder Production Atomization Wastewater
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt metal powder atomized
Chromium
1.16
0.472
Nickel
5.03
3.33
Fluoride
156
69.2
Oil and grease
52.4
31.5
Total suspended solids
108
51.1
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-11
Nickel-Cobalt
Wet Air Pollution Control Scrubber Blowdown
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt formed
Chromium
0.357
0.146
Nickel
1.56
1.03
Fluoride
48.2
21.4
Oil and grease
16.2
9.72
Total suspended solids
33.2
15.8
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-12
Nickel-Cobalt
Surface Treatment Spent Baths
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt surface treated
Chromium
0.412
0.169
Nickel
1.8
1.19
Fluoride
55.7
24.7
Oil and grease
18.7
11.2
Total suspended solids
38.4
18.3
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-13
Nickel-Cobalt
Surface Treatment Rinse
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt surface treated
Chromium
10.4
4.25
Nickel
45.3
30.0
Fluoride
1410
623
Oil and grease
472
283
Total suspended solids
968
460
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-14
Nickel-Cobalt
Alkaline Cleaning Spent Baths
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt alkaline cleaned
Chromium
0.015
1.52
Nickel
16.2
10.7
Fluoride
502
223
Oil and grease
169
101
Total suspended solids
346
165
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-15
Nickel-Cobalt
Alkaline Cleaning Rinse
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt alkaline cleaned
Chromium
1.03
0.420
Nickel
4.48
2.96
Fluoride
139
61.5
Oil and grease
46.6
28.0
Total suspended solids
95.6
45.5
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-16
Nickel-Cobalt
Molten Salt Rinse
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt treated with molten salt
Chromium
3.72
1.52
Nickel
16.2
10.7
Fluoride
502
223
Oil and grease
169
101
Total suspended solids
346
165
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-17
Nickel-Cobalt
Ammonia Rinse
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt treated with ammonia solution
Chromium
0.007
0.003
Nickel
0.029
0.019
Fluoride
0.881
0.391
Oil and grease
0.296
0.178
Total suspended solids
0.607
0.289
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-18
Nickel-Cobalt
Sawing or Grinding Spent Emulsions
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt sawed or ground with emulsions
Chromium
0.018
0.007
Nickel
0.076
0.050
Fluoride
2.35
1.04
Oil and grease
0.788
0.473
Total suspended solids
1.62
0.769
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-19
Nickel-Cobalt
Sawing or Grinding Rinse
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  sawed or ground nickel-cobalt rinsed
Chromium
0.797
0.326
Nickel
3.48
2.30
Fluoride
108
47.8
Oil and grease
36.2
21.7
Total suspended solids
74.2
35.3
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-20
Nickel-Cobalt
Steam Cleaning Condensate
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt steam cleaned
Chromium
0.013
0.006
Nickel
0.058
0.039
Fluoride
1.79
0.795
Oil and grease
0.602
0.361
Total suspended solids
1.24
0.587
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-21
Nickel-Cobalt
Dye Penetrant Testing Wastewater
BPT Effluent Limitations
Maximum for
Maximum for
any 1 day
monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt tested with the dye penetrant method
Chromium
0.094
0.039
Nickel
0.409
0.271
Fluoride
12.7
5.63
Oil and grease
4.26
2.56
Total suspended solids
8.74
4.16
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-22
Nickel-Cobalt
Electrocoating Rinse
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt electro-coated
Chromium
1.48
0.607
Nickel
6.47
4.28
Fluoride
201
89.0
Oil and grease
67.4
40.5
Total suspended solids
138
65.7
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 3-23
Nickel-Cobalt
Miscellaneous Wastewater Streams
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  nickel-cobalt formed
Chromium
0.108
0.044
Nickel
0.473
0.313
Fluoride
14.7
6.50
Oil and grease
4.92
2.95
Total suspended solids
10.1
4.80
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all
					 times