40 CFR 430.17: Pretreatment standards for new sources (PSNS).

Except as provided in 40 CFR 403.7, any new source subject to this subpart that introduces pollutants into a publicly owned treatment works must: comply with 40 CFR part 403; and achieve the following pretreatment standards for new sources (PSNS) if it uses chlorophenolic-containing biocides. Permittees not using chlorophenolic-containing biocides must certify to the permit-issuing authority that they are not using these biocides:

Subpart A

[PSNS]

Pollutant or pollutant property Maximum for any 1 day

Milligrams/liter (mg/l) Kg/kkg (or pounds per 1,000 lb) of product a

Pentachlorophenol (0.012)(50.7)/y 0.0025

Trichlorophenol (0.089)(50.7)/y 0.019

y = wastewater discharged in kgal per ton of product.

a The following equivalent mass limitations are provided as guidance in cases when POTWs find it necessary to impose mass effluent limitations.