What must a dust wipe sample be taken after during lead abatement?

A dust wipe sample must be taken after the final cleanup during lead abatement to ensure that the area is free of lead-contaminated dust before it is considered safe for re-occupancy. This final dust wipe sample helps verify that the lead abatement methods used were effective and that any remaining lead dust levels are below acceptable thresholds established by regulations and guidelines.

Conducting this sample at this stage is vital for confirming that the cleanup process has adequately removed lead hazards, as lead dust can pose significant health risks, particularly to children and pregnant women. By performing the dust wipe sampling only after the cleanup has been completed, you ensure that the area has been thoroughly cleaned and is ready for post-abatement assessment before allowing residents or workers back in.

Taking dust wipe samples during other stages, such as before cleanup or during community notifications, would not provide an accurate representation of lead dust levels after lead hazards have been addressed, thereby compromising the validity of the data used to assess safety.