40 CFR § 430.76 - Pretreatment standards for existing sources (PSES).
---
identifier: "/us/cfr/t40/s430.76"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 430.76 - Pretreatment standards for existing sources (PSES)."
title_number: 40
title_name: "Protection of Environment"
section_number: "430.76"
section_name: "Pretreatment standards for existing sources (PSES)."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "430"
part_name: "THE PULP, PAPER, AND PAPERBOARD POINT SOURCE CATEGORY"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Sections 301, 304, 306, 307, 308, 402, and 501 of the Clean Water Act, as amended, (33 U.S.C. 1311, 1314, 1316, 1317, 1318, 1342, and 1361), and Section 112 of the Clean Air Act, as amended (42 U.S.C. 7412)."
regulatory_source: "63 FR 18635, Apr. 15, 1998, unless otherwise noted."
cfr_part: "430"
---
# 430.76 Pretreatment standards for existing sources (PSES).
(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 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). 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. PSES must be attained on or before July 1, 1984:
Subpart G
[PSES for mechanical pulp facilities where pulp and paper at groundwood mills are produced through the application of the thermo-mechanical process]
| | | |
| --- | --- | --- |
| Pentachlorophenol | (0.011) (21.1)/y | 0.00097 |
| Trichlorophenol | (0.010) (21.1)/y | 0.00088 |
| Zinc | (3.0) (21.1)/y | 0.26 |
| y = wastewater discharged in kgal per ton of product. | | |
| The following equivalent mass limitations are provided as guidance in cases when POTWs find it necessary to impose mass effluent limitations. | | |
Subpart G
[PSES for mechanical pulp facilities where the integrated production of pulp and coarse paper, molded pulp products, and newsprint at groundwood mills occurs]
| | | |
| --- | --- | --- |
| Pentachlorophenol | (0.011) (23.8)/y | 0.0011 |
| Trichlorophenol | (0.010) (23.8)/y | 0.00099 |
| Zinc | (3.0) (23.8)/y | 0.30 |
| y = wasterwater discharged in kgal per ton of product. | | |
| 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]
| | | |
| --- | --- | --- |
| Pentachlorophenol | (0.011)(21.9)/y | 0.0010 |
| Trichlorophenol | (0.010)(21.9)/y | 0.00092 |
| Zinc | (3.0)(21.9)/y | 0.27 |
| y = wastewater discharged in kgal per ton of product. | | |
| The following equivalent mass limitations are provided as guidance in cases when POTWs find it necessary to impose mass effluent limitations. | | |
(b) [Reserved]