Section NR 230.162 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available(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chloride, unused bitterns may be returned to the body of water from which the process brine solution was originally withdrawn.(2) SOLUTION BRINE MINING.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
Wis. Admin. Code Department of Natural Resources NR 230.162
Cr. Register, September, 1990, No. 417, eff. 10-1-90.