Which of the following is NOT prohibited by HUD for lead paint hazard control?

The correct answer is that visual examination of all known or assumed lead-based paint is not prohibited by HUD for lead paint hazard control. This is because visual examinations are a crucial part of identifying potential lead hazards in properties where lead-based paint may exist. By conducting a visual examination, assessors can see signs of deterioration, peeling, or chipping paint, which can indicate lead hazards, and they can then recommend appropriate remediation steps.

In contrast, chemical removal, heat gun removal, and mechanical removal of lead paint involve techniques that can present risks, such as the potential for lead dust generation or vapor release, which can pose health hazards to workers and occupants. Because of these risks, HUD establishes strict regulations regarding the use of these methods to ensure safety during lead hazard control activities.