Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 262 - Porcelain enameling
Section NR 262.24 - 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 subcategory which introduces pollutants into a publicly owned treatment works shall comply with 40 CFR Part 403 and achieve the following pretreatment standards for existing sources:
PSES
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
Milligrams per liter (mg/l) |
||
|
Chromium ....... |
0.42 |
0.17 |
|
Lead ............ |
0.15 |
0.13 |
|
Nickel ........... |
1.41 |
1.0 |
|
Zinc ............ |
1.33 |
0.56 |
(2) In cases where POTWs find it necessary to impose mass pretreatment standards the following equivalent mass standards are provided:
PSES
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
||
|
mg/m2 (Pounds per million ft2) of area coated |
||||
|
Chromium ...... |
0.53 |
(0.11) |
0.22 |
(0.05) |
|
Lead ........... |
0.19 |
(0.04) |
0.16 |
(0.03) |
|
Nickel .......... |
1.78 |
0.37 |
1.26 |
(0.26) |
|
Zinc ........... |
1.68 |
(0.35) |
0.71 |
(0.15) |
