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 X - Metal Powders › Section NR 273.104 - New source performance standards

Current through June 24, 2024
Any new source subject to this subchapter shall achieve the
					 following standards:
Table 10-17
Metal Powders
Metal Powder Production Atomization Wastewater
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  powder wet atomized
Copper
9.58
5.04
Cyanide
1.46
0.605
Lead
2.12
1.01
Oil and grease
101
60.5
Total suspended solids
207
98.3
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 10-18
Metal Powders
Sizing Spent Emulsions
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  powder sized
Copper
0.028
0.015
Cyanide
0.004
0.002
Lead
0.006
0.003
Oil and grease
0.292
0.175
Total suspended solids
0.599
0.285
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 10-19
Metal Powders
Steam Treatment
Wet Air Pollution Control Scrubber Blowdown
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  powder metallurgy parts steam treated
Copper
0.151
0.079
Cyanide
0.023
0.010
Lead
0.033
0.016
Oil and grease
1.59
0.951
Total suspended solids
3.25
1.55
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 10-20
Metal Powders
Tumbling, Burnishing, and Cleaning Wastewater
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  powder metallurgy parts tumbled, burnished, or cleaned
Copper
0.836
0.440
Cyanide
0.128
0.053
Lead
0.185
0.088
Oil and grease
8.80
5.28
Total suspended solids
18.1
8.58
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 10-21
Metal Powders
Sawing or Grinding Spent Emulsions
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  powder metallurgy parts sawed or ground with emulsion
Copper
0.035
0.018
Cyanide
0.005
0.002
Lead
0.008
0.004
Oil and grease
0.362
0.217
Total suspended solids
0.742
0.353
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 10-22
Metal Powders
Sawing or Grinding Contact Cooling Water
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  powder metallurgy parts sawed or ground with contact cooling water
Copper
3.08
1.62
Cyanide
0.470
0.195
Lead
0.681
0.324
Oil and grease
32.4
19.5
Total suspended solids
66.4
31.6
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 10-23
Metal Powders
Hot Pressing Contact
Cooling Water
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  powder cooled after pressing
Copper
1.67
0.880
Cyanide
0.255
0.106
Lead
0.370
0.176
Oil and grease
17.6
10.6
Total suspended solids
36.1
17.2
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 10-24
Metal Powders
Mixing Wet Air Pollution Control Scrubber Blowdown
NSPS
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/off-kg (pounds per million off-pounds) of
								  powder mixed
Copper
15.0
7.90
Cyanide
2.29
0.948
Lead
3.32
1.58
Oil and grease
158
94.8
Total suspended solids
324
154
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all
					 times