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§ 420.93 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
(a) Sulfuric acid pickling (spent acid solutions and rinse waters)—(1) Rod, wire and coil.
Subpart I
Pollutant or pollutant property | BAT effluent limitations | |
---|---|---|
Maximum for any 1 day | Average of daily values for 30 consecutive days | |
Kg/kkg (pounds per 1,000 lb) of product | ||
Lead | 0.000526 | 0.000175 |
Zinc | 0.000701 | 0.000234 |
(2) Bar, billet and bloom.
Subpart I
Pollutant or pollutant property | BAT effluent limitations | |
---|---|---|
Maximum for any 1 day | Average of daily values for 30 consecutive days | |
Kg/kkg (pounds per 1,000 lb) of product | ||
Lead | 0.000169 | 0.0000563 |
Zinc | 0.000225 | 0.0000751 |
(3) Strip, sheet and plate.
Subpart I
Pollutant or pollutant property | BAT effluent limitations | |
---|---|---|
Maximum for any 1 day | Average of daily values for 30 consecutive days | |
Kg/kkg (pounds per 1,000 lb) of product | ||
Lead | 0.000338 | 0.000113 |
Zinc | 0.000451 | 0.000150 |