40 CFR § 442.35 - Pretreatment standards for existing sources (PSES).

---
identifier: "/us/cfr/t40/s442.35"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 442.35 - Pretreatment standards for existing sources (PSES)."
title_number: 40
title_name: "Protection of Environment"
section_number: "442.35"
section_name: "Pretreatment standards for existing sources (PSES)."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "442"
part_name: "TRANSPORTATION EQUIPMENT CLEANING POINT SOURCE CATEGORY"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1311, 1314, 1316, 1317, 1318, 1342 and 1361."
regulatory_source: "65 FR 49700, Aug. 14, 2000, unless otherwise noted."
cfr_part: "442"
---


# 442.35 Pretreatment standards for existing sources (PSES).

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart must achieve the following pretreatment standards:

Table—Pretreatment Standards

| Regulated parameter | Maximum daily |
| --- | --- |
| Non-polar material (SGT-HEM) | 26 |
| Cadmium | 0.020 |
| Chromium | 0.42 |
| Copper | 0.10 |
| Lead | 0.14 |
| Mercury | 0.0013 |
| Nickel | 0.58 |
| Zinc | 8.3 |
| Mg/L (ppm). |  |