40 CFR § 761.363
Applicability
June 9, 2020
The double wash/rinse procedure includes two washing steps and two rinsing steps. The two washing and rinsing steps are slightly different depending on whether a contaminated surface was relatively clean before the spill (see §761.372), or whether the surface was coated or covered with dust, dirt, grime, grease or another absorbent material (see §761.375).