Site Feedback

Title 40

Displaying title 40, up to date as of 6/08/2026. Title 40 was last amended 6/08/2026.
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Learn more about the eCFR, its status, and the editorial process.

§ 430.37 Pretreatment standards for new sources (PSNS).

(a) 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 C

[PSNS for unbleached kraft facilities where linerboard is produced]

Pollutant or pollutant property Maximum for any 1 day
Milligrams/liter Kg/kkg (or pounds per 1,000 lb) of product a
Pentachlorophenol (0.015)(9.4)/y 0.00058
Trichlorophenol (0.013)(9.4)/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

[PSNS for unbleached kraft facilities where bag paper and other mixed products are produced]

Pollutant or pollutant property Maximum for any 1 day
Milligrams/liter Kg/kkg (or pounds per 1,000 lb) of product a
Pentachlorophenol (0.012)(11.4)/y 0.00058
Trichlorophenol (0.011)(11.4)/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

[PSNS 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 (0.013)(11.5)/y 0.00064
Trichlorophenol (0.012)(11.5)/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.