40 CFR 430.67: 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 F

Pollutant or pollutant property PSNS

Maximum for any 1 day

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

Pentachlorophenol (0.045)(7.3)/y 0.0014

Trichlorophenol (0.014)(7.3)/y 0.00043

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 equivalent limitations.