If one surface shows lead above the clearance criterion while others are below, what is the likely outcome for clearance?

• A. Clearance is not achieved and re-cleaning is required
• B. Clearance is achieved if most surfaces pass
• C. Clearance is based on average
• D. No impact on clearance decisions

Answer: (A)

In lead clearance testing, every surface must meet the clearance criterion. If a single surface remains above the threshold while others pass, the overall result is that clearance is not achieved. The correct action is to re-clean the affected surface and retest it until it passes.

This strict requirement exists because any noncompliant surface could still expose occupants to lead, so you don’t rely on averages or majority passing. If you allowed a surface to fail, it undermines the safety goal of ensuring all accessible areas meet the standard.