40 CFR § 761.372 - Specific requirements for relatively clean surfaces.
---
identifier: "/us/cfr/t40/s761.372"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 761.372 - Specific requirements for relatively clean surfaces."
title_number: 40
title_name: "Protection of Environment"
section_number: "761.372"
section_name: "Specific requirements for relatively clean surfaces."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "R"
subchapter_name: "TOXIC SUBSTANCES CONTROL ACT"
part_number: "761"
part_name: "POLYCHLORINATED BIPHENYLS (PCBs) MANUFACTURING, PROCESSING, DISTRIBUTION IN COMMERCE, AND USE PROHIBITIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "15 U.S.C. 2605, 2607, 2611, 2614, and 2616 and 42 U.S.C. 6939g."
regulatory_source: "43 FR 7156, Feb. 17, 1978, unless otherwise noted."
cfr_part: "761"
---
# 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
<sup>2</sup> (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
<sup>2</sup> (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) of this section. The rinse solvent from the first rinse (paragraph (b) of this section) may be used.
(d) *Second rinse.* Repeat the procedures in paragraph (b) of this section.