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) Salt bath descaling, oxidizing —(1) Batch, sheet and plate. Subpart H 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 Chromium 0.00292 0.00117 Nickel 0.00263 0.000876 (2) Batch, rod and wire. Subpart H 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 Chromium 0.00175 0.000701 Nickel 0.00158 0.000526 (3) Batch, pipe and tube. Subpart H 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 Chromium 0.00709 0.00284 Nickel 0.00638 0.00213 (4) Continuous. Subpart H 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 Chromium 0.00138 0.000551 Nickel 0.00124 0.000413 (b) Salt bath descaling, reducing —(1) Batch. Subpart H 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 Cyanide 0.00102 0.000339 Chromium 0.00136 0.000542 Nickel 0.00122 0.000407 (2) Continuous. Subpart H 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 Cyanide 0.00569 0.00190 Chromium 0.00759 0.00304 Nickel 0.00683 0.00228