When does the EPA not require dust wipe sampling?

When does the EPA not require dust wipe sampling?

• A. Following abatement exclusively on exterior of a dwelling.
• B. Always require dust wipe sampling after abatement.
• C. Never require dust wipe sampling for exterior work.
• D. Only require dust wipe sampling for interior work.

Answer: (C)

Dust wipe sampling is the method used to verify that interior surfaces meet the lead dust clearance standards after abatement. The EPA’s clearance requirements focus on interior areas where occupants, especially children, have direct contact, and they use dust wipe tests to prove surfaces are below risk levels. For exterior work, there isn’t a federal requirement to perform dust wipe sampling to demonstrate cleanup. Instead, exterior work is typically assessed through cleaning verification and visual checks, since exterior surfaces don’t have the same interior clearance standards. If interior spaces are affected by exterior work, those interior surfaces would follow the interior clearance requirements, not the exterior ones. So, exterior-only work does not require dust wipe sampling, which is why that option is correct.

Dust wipe sampling is the method used to verify that interior surfaces meet the lead dust clearance standards after abatement. The EPA’s clearance requirements focus on interior areas where occupants, especially children, have direct contact, and they use dust wipe tests to prove surfaces are below risk levels. For exterior work, there isn’t a federal requirement to perform dust wipe sampling to demonstrate cleanup. Instead, exterior work is typically assessed through cleaning verification and visual checks, since exterior surfaces don’t have the same interior clearance standards. If interior spaces are affected by exterior work, those interior surfaces would follow the interior clearance requirements, not the exterior ones. So, exterior-only work does not require dust wipe sampling, which is why that option is correct.