Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 255 - Battery manufacturing
Subchapter VII - Magnesium Subcategory
Section NR 255.64 - Pretreatment standards for existing sources
Current through August 26, 2024
(1) Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subchapter that introduces pollutants into a POTW shall comply with 40 CFR Part 403 and achieve the following pretreatment standards for existing sources:
Table 105
Silver Chloride Cathodes - Chemically Reduced
PSES
|
POLLUTANT OR POLLUTANT PROPERTY |
MAXIMUM FOR ANY 1 DAY |
MAXIMUM FOR MONTHLY AVERAGE |
|
Metric units -mg/kg of silver processed English units -lb/million lbs of silver processed |
||
|
Lead |
1,032.36 |
491.60 |
|
Silver |
1,007.78 |
417.86 |
Table 106
Silver Chloride Cathodes - Electrolytic
PSES
|
POLLUTANT OR POLLUTANT PROPERTY |
MAXIMUM FOR ANY 1 DAY |
MAXIMUM FOR MONTHLY AVERAGE |
|
Metric units -mg/kg of silver processed English units -lb/million lbs of silver processed |
||
|
Lead |
60.9 |
29.0 |
|
Silver |
59.5 |
24.7 |
Table 107
Cell Testing
PSES
|
POLLUTANT OR POLLUTANT PROPERTY |
MAXIMUM FOR ANY 1 DAY |
MAXIMUM FOR MONTHLY AVERAGE |
|
Metric units - |
mg/kg of cells produced |
|
|
English units - |
lb/million lbs of cells produced |
|
|
Lead |
22.1 |
10.5 |
|
Silver |
21.6 |
8.9 |
Table 108
Floor and Equipment Wash
PSES
|
POLLUTANT OR POLLUTANT PROPERTY |
MAXIMUM FOR ANY 1 DAY |
MAXIMUM FOR MONTHLY AVERAGE |
|
Metric units - |
mg/kg of cells produced |
|
|
English units - |
lb/million lbs of cells produced |
|
|
Lead |
0.039 |
0.018 |
|
Silver |
0.038 |
0.105 |
(2) There may be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed in tables 105 to 108.
