CDPH Lead Inspector/Assessor California State Practice Exam

The definition of "Lead-contaminated dust" according to Title 17 CCR 35035 specifies the threshold levels for lead on different surfaces within a residential setting. The correct answer accurately reflects these defined levels, establishing that lead-contaminated dust is present when interior floors have a lead concentration of 10 micrograms per square foot or more, and when interior horizontal surfaces have lead levels of 100 micrograms per square foot or greater. Understanding these thresholds is crucial for assessing lead hazards in residential environments, especially in homes built before 1978, when lead-based paints were commonly used. The significance of these levels lies in their role in risk assessments and remediation strategies, helping ensure proper health and safety protocols are followed to minimize lead exposure in children and other vulnerable populations. In summary, the specified values in the correct answer are critical for identifying lead-contaminated dust, thus providing important benchmarks for lead hazard assessments in residential settings.