CDPH Lead Inspector/Assessor California State Exam 2025 - Complete Practice Resource

Question: 1 / 560

What is the maximum allowable lead concentration in dust samples for clearance?

10 µg/ft²

40 µg/ft²

The maximum allowable lead concentration in dust samples for clearance is 40 µg/ft². This standard is established by regulatory agencies to ensure that residential and child-occupied facilities are safe from lead exposure, particularly following remediation or renovations. The 40 µg/ft² clearance standard helps to protect sensitive populations, such as children, who are more vulnerable to the adverse health effects of lead.

Standards like this are in place to provide a clear guideline for assessing lead contamination in dust, which is a significant source of lead exposure. When conducting lead inspections or assessments, it is crucial to interpret these clearance levels accurately to determine if a space is safe for re-occupancy or if further remediation is required.

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50 µg/ft²

100 µg/ft²

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