40 CFR § 440.23
Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
June 9, 2020
Except as provided in subpart L of this part and 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). The concentration of pollutants discharged in mine drainage from mines producing bauxite ores shall not exceed:
Open Table
| Effluent characteristic | Effluent limitations | |
|---|---|---|
| Maximum for any 1 day | Average of daily values for 30 consecutive days | |
| Milligrams per liter | ||
| Fe (total) | 1.0 | 0.5 |
| Al | 2.0 | 1.0 |
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