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
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
