Section NR 230.282 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available(1) Except as provided in 40 CFR 125.30 to 125.32, any existing point source subject to this subchapter which uses borax made by the Trona process may not discharge process wastewater pollutants into waters of the state, but residual brine and depleted liquor may be returned to the body of water from which the process brine solution was originally withdrawn.(2) Except as provided in 40 CFR 125.30 to 125.32, any existing point source subject to this subchapter which uses ore mined borax shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of BPT: Table 39
Boric Acid Ore Mined Borax Process
BPT Effluent Limitations |
| kg/kkg (pounds per 1,000 pounds) of boric acid |
Pollutant or pollutant property | Maximum for any 1 day | Average of daily values for 30 consecutive days |
Arsenic | 0.0028 | 0.0014 |
TSS | 0.14 | 0.07 |
pH | (1) | (1) |
(1) Within the range of 6.0 to 9.0
Wis. Admin. Code Department of Natural Resources § NR 230.282
Cr. Register, September, 1990, No. 417, eff. 10-1-90.