What is recommended for the procedure when wiping a floor surface for dust lead collection?

Wiping a floor surface for dust lead collection using a side-to-side motion is recommended because this method effectively captures lead dust particles that may be spread across the surface. This technique ensures that the entire area is covered uniformly, allowing for a more thorough collection of dust samples. The side-to-side movement helps to move the dust into the wiping cloth rather than pushing it along the surface, leading to more accurate results in measuring lead contamination levels.

This approach also helps avoid the risk of merely shifting dust around without collecting it, which can happen with random or circular motions. In addition, wiping in a vertical motion might not achieve the same level of thoroughness as the side-to-side method does. Proper methodology is crucial in ensuring the reliability of lead dust assessment results, ultimately ensuring better health protection from lead exposure.