Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 274 - Nonferrous metals manufacturing
Subchapter XXV - Primary Precious Metals and Mercury
Section NR 274.254 - New source performance standards
Any new source subject to this subchapter shall achieve the following standards:
Table 25-19
Primary Precious Metals and Mercury Smelter Wet Air Pollution Control
|
NSPS |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/troy ounce of gold and silver smelted |
|
|
Lead |
0.364 |
0.169 |
|
Mercury |
0.195 |
0.078 |
|
Silver |
0.377 |
0.156 |
|
Zinc |
1.326 |
0.546 |
|
Gold |
0.130 |
|
|
Oil and grease |
13.000 |
13.000 |
|
Total suspended solids |
19.500 |
15.600 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 25-20
Primary Precious Metals and Mercury Silver Chloride Reduction Spent Solution
|
NSPS |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/troy ounce of silver reduced in solution |
|
|
Lead |
0.112 |
0.052 |
|
Mercury |
0.060 |
0.024 |
|
Silver |
0.116 |
0.048 |
|
Zinc |
0.408 |
0.168 |
|
Gold |
0.040 |
|
|
Oil and grease |
4.000 |
4.000 |
|
Total suspended solids |
6.000 |
4.800 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 25-21
Primary Precious Metals and Mercury Electrolytic Cells Wet Air Pollution Control
|
NSPS |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/troy ounce of gold refined electrolytically |
|
|
Lead |
5.544 |
2.574 |
|
Mercury |
2.970 |
1.188 |
|
Silver |
5.742 |
2.376 |
|
Zinc |
20.200 |
8.316 |
|
Gold |
1.980 |
|
|
Oil and grease |
198.000 |
198.000 |
|
Total suspended solids |
297.000 |
237.600 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 25-22
Primary Precious Metals and Mercury Electrolyte Preparation Wet Air Pollution Control
|
NSPS |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/troy ounce of silver in the produced electrolyte |
|
|
Lead |
0.014 |
0.007 |
|
Mercury |
0.008 |
0.003 |
|
Silver |
0.015 |
0.006 |
|
Zinc |
0.051 |
0.021 |
|
Gold |
0.005 |
|
|
Oil and grease |
0.500 |
0.500 |
|
Total suspended solids |
0.750 |
0.600 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 25-23
Primary Precious Metals and Mercury Calciner Wet Air Pollution Control
|
NSPS |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of mercury condensed |
|
|
Lead |
6.160 |
2.860 |
|
Mercury |
3.300 |
1.320 |
|
Silver |
6.380 |
2.640 |
|
Zinc |
22.440 |
9.240 |
|
Gold |
2.200 |
|
|
Oil and grease |
220.000 |
220.000 |
|
Total suspended solids |
330.000 |
264.000 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 25-24
Primary Precious Metals and Mercury Calcine Quench Water
|
NSPS |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of mercury condensed |
|
|
Lead |
4.928 |
2.288 |
|
Mercury |
2.640 |
1.056 |
|
Silver |
5.104 |
2.112 |
|
Zinc |
17.950 |
7.392 |
|
Gold |
1.760 |
|
|
Oil and grease |
176.000 |
176.000 |
|
Total suspended solids |
264.000 |
211.200 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 25-25
Primary Precious Metals and Mercury Calciner Stack Gas Contact Cooling Water
|
NSPS |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of mercury condensed |
|
|
Lead |
1.162 |
0.540 |
|
Mercury |
0.623 |
0.249 |
|
Silver |
1.204 |
0.498 |
|
Zinc |
4.233 |
1.743 |
|
Gold |
0.415 |
|
|
Oil and grease |
41.500 |
41.500 |
|
Total suspended solids |
62.250 |
49.800 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 25-26
Primary Precious Metals and Mercury Condenser Blowdown
|
NSPS |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of mercury condensed |
|
|
Lead |
3.864 |
1.794 |
|
Mercury |
2.070 |
0.828 |
|
Silver |
4.002 |
1.656 |
|
Zinc |
14.080 |
5.796 |
|
Gold |
1.380 |
|
|
Oil and grease |
138.000 |
138.000 |
|
Total suspended solids |
207.000 |
165.600 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
Table 25-27
Primary Precious Metals and Mercury Mercury Cleaning Bath Water
|
NSPS |
||
|
Maximum for any 1 day |
Maximum for monthly average |
|
|
Pollutant or pollutant property |
mg/kg (pounds per million pounds) of mercury condensed |
|
|
Lead |
0.392 |
0.182 |
|
Mercury |
0.210 |
0.084 |
|
Silver |
0.406 |
0.168 |
|
Zinc |
1.428 |
0.588 |
|
Gold |
0.140 |
|
|
Oil and grease |
14.000 |
14.000 |
|
Total suspended solids |
21.000 |
16.800 |
|
pH |
(1) |
(1) |
(1) Within the range of 7.5 to 10.0 at all times.
