Wis. Admin. Code NR § 230.222
Except as provided in 40 CFR 125.30 to 125.32, any existing point source subject to this subchapter shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of BPT:
Table 29
Titanium Dioxide Sulfate Process
BPT Effluent Limitations | ||
kg/kkg (pounds per 1,000 pounds) of titanium dioxide | ||
Pollutant or pollutant property | Maximum for any 1 day | Average of daily values for 30 consecutive days |
TSS | 140 | 38 |
Chromium | 0.48 | 0.21 |
Nickel | 0.29 | 0.14 |
pH | (1) | (1) |
(1) Within the range of 6.0 to 9.0
Table 30
Titanium Dioxide Chloride Process
BPT Effluent Limitations | ||
kg/kkg (pounds per 1,000 pounds) of titanium dioxide | ||
Pollutant or pollutant property | Maximum for any 1 day | Average of daily values for 30 consecutive days |
TSS | 23 | 6.4 |
Chromium | 0.057 | 0.030 |
pH | (1) | (1) |
(1) Within the range of 6.0 to 9.0
Table 31
Titanium Dioxide Chloride-Ilmenite Process
BPT Effluent Limitations | ||
kg/kkg (pounds per 1,000 pounds) of titanium dioxide | ||
Pollutant or pollutant property | Maximum for any 1 day | Average of daily values for 30 consecutive days |
TSS | 35 | 9.6 |
Chromium | 0.12 | 0.053 |
Nickel | 0.072 | 0.035 |
pH | (1) | (1) |
(1) Within the range of 6.0 to 9.0
Wis. Admin. Code Department of Natural Resources § NR 230.222