How are wipe sample results used to determine clearance?

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Prepare for the Lead Clearance Technician Exam with our comprehensive quiz. Engage with flashcards and multiple-choice questions, each accompanied by hints and explanations. Get thoroughly prepared for your certification!

Multiple Choice

How are wipe sample results used to determine clearance?

Explanation:
Each wipe sample is measured against the established clearance criterion for lead. The area is cleared only when every sampled surface meets this criterion. If any surface tests above the limit, cleaning must continue and re-testing is done on the affected surfaces until all pass. This per-surface approach prevents hiding a hot spot behind an average: averaging could mask a surface that still contains hazardous lead. So, clearance is achieved only when all surfaces meet the criteria.

Each wipe sample is measured against the established clearance criterion for lead. The area is cleared only when every sampled surface meets this criterion. If any surface tests above the limit, cleaning must continue and re-testing is done on the affected surfaces until all pass. This per-surface approach prevents hiding a hot spot behind an average: averaging could mask a surface that still contains hazardous lead. So, clearance is achieved only when all surfaces meet the criteria.

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