---
kind: "section"
citation: "40 C.F.R. § 139.6"
title: "40"
number: "139.6"
heading: "Oil management."
url: "https://uscodex.org/cfr/40/139.6"
---

# §139.6. Oil management.

- (a) The requirements in [paragraphs (b) through (e)](#b..e) of this section apply to vessel equipment and operations that use or discharge oil or oily mixtures.
- (b) **The discharge of used or spent oil no longer being used for its intended purpose is prohibited.**
- (c) The discharge of oil in such quantities as may be harmful is prohibited.
- (d) During fueling, maintenance, and other vessel operations, control and response measures must be used to prevent, minimize, and contain spills and overflows.
- (e) An environmentally acceptable lubricant (EAL) must be used in any oil-to-sea interface unless such use is technically infeasible. Operators of new build vessels should endeavor to use seawater-based systems for stern tube lubrication to eliminate the discharge of oil from these interfaces to the aquatic environment.

## Notes

### Authority

Authority: 33 U.S.C. 1251 et seq.

### Source

Source: 89 FR 82131, Oct. 9, 2024, unless otherwise noted.