Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart where chlorophenolic-containing biocides are used must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). Non-continuous dischargers shall not be subject to the maximum day mass limitations in kg/kkg (lb/1000 lb) but shall be subject to concentration limitations. Concentration limitations are only applicable to non-continuous dischargers. Permittees not using chlorophenolic-containing biocides must certify to the permit-issuing authority that they are not using these biocides:
Subpart A
[BAT effluent limitations]
| Pollutant or pollutant property | Maximum for any 1 day | |
|---|---|---|
| Kg/kkg (or pounds per 1,000 lb) of product | Milligrams/liter | |
| Pentachlorophenol | 0.0025 | (0.011)(55.1)/y |
| Trichlorophenol | 0.016 | (0.068)(55.1)/y |
| y = wastewater discharged in kgal per ton of product. | ||
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