Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection - Wisconsin Pollutant Discharge Elimination System
Chapter NR 230 - Inorganic chemicals manufacturing
Subchapter XVI - Sodium chloride
Section NR 230.162 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available
Universal Citation: WI Admin Code ยง NR 230.162
Current through August 26, 2024
(1) SOLAR EVAPORATION.
(a) Except as provided in
40 CFR 125.30
to
125.32 and
par. (b), any existing point source subject to this subchapter which uses the
solar evaporation procedure may not discharge process wastewater pollutants to
waters of the state.
(b) If no
additional pollutants are added to the bitterns during production of sodium
chloride, unused bitterns may be returned to the body of water from which the
process brine solution was originally withdrawn.
(2) SOLUTION BRINE MINING. Except as provided in 40 CFR 125.30 to 125.32, any existing point source subject to this subchapter which uses the solution brine mining process shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of BPT:
Table 22
Sodium Chloride Brine Mining Process
|
BPT Effluent Limitations |
||
|
kg/kkg (pounds per 1,000 pounds) of sodium chloride |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
TSS |
0.34 |
0.17 |
|
pH |
(1) |
(1) |
(1) Within the range of 6.0 to 9.0
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