Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System
Chapter NR 252 - Leather tanning and finishing
Section NR 252.15 - Pretreatment standards for existing sources (PSES)
Current through August 26, 2024
(1) Except as provided in s. NR 252.04 and 40 CFR 403.7 and 403.13, any existing source subject to this subcategory which introduces process wastewater pollutants into a publicly owned treatment works shall comply with 40 CFR Part 403, and achieve the following pretreatment standards:
|
PSES |
||
|
Milligrams per liter (mg/l) |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
Sulfide |
24.0 |
. . . . . . . . .. |
|
Total chromium |
12.0 |
8.0 |
|
pH |
(1) |
(1) |
1 Not less tha n 7.0.
(2) Any existing source subject to this subcategory which processes less than 275 hides/day shall comply with sub. (1), except that the total chromium limitations contained in sub. (1) do not apply.
