---
kind: "section"
citation: "40 C.F.R. § 761.310"
title: "40"
number: "761.310"
heading: "Collecting the sample."
url: "https://uscodex.org/cfr/40/761.310"
---

# §761.310. Collecting the sample.


Use the standard wipe test as defined in [§ 761.123](/cfr/40/761.123.md) to sample one 10 centimeter by 10 centimeter square (100 cm 2) area to represent surface area PCB concentrations of each square meter or fraction of a square meter of a nearly flat, non-porous surface. For small surfaces, use the same procedure as for the standard wipe test, only sample the entire area, rather than 10 centimeter by 10 centimeter squares.


## Notes

### Source

Source: 63 FR 35467, 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.