---
kind: "section"
citation: "40 C.F.R. § 261.199"
title: "40"
number: "261.199"
heading: "Special requirements for incompatible materials."
url: "https://uscodex.org/cfr/40/261.199"
---

# §261.199. Special requirements for incompatible materials.

- (a) Incompatible materials must not be placed in the same tank system.
- (b) Hazardous secondary material must not be placed in a tank system that has not been decontaminated and that previously held an incompatible material.

## Notes

### Source

Source: 80 FR 1777, Jan. 13, 2015, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 6905, 6912(a), 6921, 6922, 6924(y) and 6938.

### Source

Source: 45 FR 33119, May 19, 1980, unless otherwise noted.