40 CFR 430.36: Pretreatment standards for existing sources (PSES).

Except as provided in 40 CFR 403.7 and 403.13, any existing 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 existing sources (PSES) if it uses chlorophenolic-containing biocides. Permittees not using chlorophenolic-containing biocides must certify to the permit-issuing authority that they are not using those biocides. PSES must be attained on or before July 1, 1984:

Subpart C

[PSES for unbleached kraft facilities]

Pollutant or pollutant property Maximum for any 1 day

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

Pentachlorophenol (0.011)(12.6)/y 0.00058

Trichlorophenol (0.010)(12.6)/y 0.00053

y = wastewater discharged in kgal per ton of product.

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

Subpart C

[PSES for unbleached kraft facilities where pulp and paper are produced using the unbleached kraft-neutral sulfite semi-chemical (cross recovery) process and/or a combined unbleached kraft and semi-chemical process, wherein the spent semi-chemical cooking liquor is burned within the unbleached kraft chemical recovery system]

Pollutant or pollutant property Maximum for any 1 day

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

Pentachlorophenol (0.011)(14.0)/y 0.00064

Trichlorophenol (0.010)(14.0)/y 0.00059

y = wastewater discharged in kgal per ton of product.

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