40 CFR 430.77: Pretreatment standards for new sources (PSNS).

(a) The following applies to mechanical pulp facilities where pulp and paper at groundwood mills are produced through the application of the thermo-mechanical process; mechanical pulp facilities where the integrated production of pulp and coarse paper, molded pulp products, and newsprint at groundwood mills occurs; and mechanical pulp facilities where the integrated production of pulp and fine paper at groundwood mills occurs: 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). Pentachlorophenol and trichlorophenol limitations are only applicable at facilities where chlorophenolic-containing biocides are used. Permittees not using chlorophenolic-containing biocides must certify to the permit-issuing authority that they are not using these biocides. Zinc limitations are only applicable at facilities where zinc hydrosulfite is used as a bleaching agent. Permittees not using zinc hydrosulfite as a bleaching agent must certify to the permit issuing authority that they are not using this bleaching compound:

Subpart G

[PSNS for mechanical pulp facilities where pulp and paper at groundwood mills are produced through the application of the thermo-mechanical process]

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 (0.017)(13.8)/y 0.00097

Trichlorophenol (0.015)(13.8)/y 0.00088

Zinc (3.0)(13.8)/y 0.17

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.

Subpart G

[PSNS for mechanical pulp facilities where the integrated production of pulp and coarse paper, molded pulp products, and newsprint at groundwood mills occurs]

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 (0.016)(16.8)/y 0.0011

Trichlorophenol (0.014)(16.8)/y 0.00099

Zinc (3.0)(16.8)/y 0.21

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.

Subpart G

[PSNS for mechanical pulp facilities where the integrated production of pulp and fine paper at groundwood mills occurs]

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 (0.016)(15.4)/y 0.0010

Trichlorophenol (0.014)(15.4)/y 0.00092

Zinc (3.0)(15.4)/y 0.19

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.

(b) [Reserved]