CDPH Lead Inspector/Assessor California State Practice Exam

What type of sanding is prohibited when not using proper controls?

1. Wet sanding

2. Machine sanding

3. Manual sanding

4. Finish sanding

The correct answer is: Machine sanding

Machine sanding is prohibited when not using proper controls due to the increased risk of generating airborne lead dust and particles. Machine sanders generally operate at higher speeds and have the potential to create more fine dust, which can be harmful when lead is present in the materials being sanded. The use of proper controls, such as dust collection systems or appropriate personal protective equipment, is essential to minimize exposure and ensure safety during the sanding process. In contrast, wet sanding, while it can also produce lead dust, is often considered a safer alternative because the water helps to suppress dust emissions. Manual sanding typically generates less dust compared to machine sanding, but may still pose a risk without controls. Finish sanding, similar to manual sanding, can also vary in risk based on how it is executed. These methods may still require proper controls depending on the lead content and other environmental factors, but machine sanding particularly stands out as one that warrants strict regulations when controls are absent.