---
kind: "section"
citation: "40 C.F.R. § 761.372"
title: "40"
number: "761.372"
heading: "Specific requirements for relatively clean surfaces."
url: "https://uscodex.org/cfr/40/761.372"
---

# §761.372. Specific requirements for relatively clean surfaces.


For surfaces that do not appear dusty or grimy before a spill, such as glass, automobile surfaces, newly-poured concrete, and desk tops, use the double wash/rinse procedures in this section.

- (a) **First wash.** Cover the entire surface with organic solvent in which PCBs are soluble to at least 5 percent by weight. Contain and collect any runoff solvent for disposal. Scrub rough surfaces with a scrub brush or disposable scrubbing pad and solvent such that each 900 cm 2 (1 square foot) of the surface is always very wet for 1 minute. Wipe smooth surfaces with a solvent-soaked, disposable absorbent pad such that each 900 cm 2 (1 square foot) is wiped for 1 minute. Any surface <1 square foot shall also be wiped for 1 minute. Wipe, mop, and/or sorb the solvent onto absorbent material until no visible traces of the solvent remain.
- (b) **First rinse.** Wet the surface with clean rinse solvent such that the entire surfaces is very wet for 1 minute. Drain and contain the solvent from the surface. Wipe the residual solvent off the drained surface using a clean, disposable absorbent pad until no liquid is visible on the surface.
- (c) **Second wash.** Repeat the procedures in [paragraph (a)](#a) of this section. The rinse solvent from the first rinse ([paragraph (b)](#b) of this section) may be used.
- (d) **Second rinse.** Repeat the procedures in [paragraph (b)](#b) of this section.

## Notes

### Source

Source: 63 FR 35472, June 29, 1998, unless otherwise noted.

### Authority

Authority: 15 U.S.C. 2605, 2607, 2611, 2614, and 2616 and 42 U.S.C. 6939g.

### Source

Source: 43 FR 7156, Feb. 17, 1978, unless otherwise noted.