40 CFR § 1700.40 - Commingling of discharges.

---
identifier: "/us/cfr/t40/s1700.40"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 1700.40 - Commingling of discharges."
title_number: 40
title_name: "Protection of Environment"
section_number: "1700.40"
section_name: "Commingling of discharges."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY AND DEPARTMENT OF DEFENSE; UNIFORM NATIONAL DISCHARGE STANDARDS FOR VESSELS OF THE ARMED FORCES"
part_number: "1700"
part_name: "UNIFORM NATIONAL DISCHARGE STANDARDS FOR VESSELS OF THE ARMED FORCES"
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. 1322, 1361."
regulatory_source: "64 FR 25134, May 10, 1999, unless otherwise noted."
cfr_part: "1700"
---


# 1700.40 Commingling of discharges.

If two or more regulated discharge streams are combined into one, the resulting discharge stream must meet the requirements applicable to all discharge streams that are combined prior to discharge.