For exterior surfaces, how much loose area can exceed the intact surface limit for moderate risk deleaders?

The appropriate limit for loose areas on exterior surfaces when evaluating moderate risk deleaders is 20 square feet. This threshold is established to help identify properties with lead hazards based on the extent of deteriorating lead-based paint, which can pose a risk of lead exposure, particularly in homes and buildings constructed before the lead paint ban in 1978.

By setting this limit at 20 square feet, regulations focus on properties that may require more stringent lead remediation efforts due to the potential for significant lead dust generation or paint chip deterioration. This measurement is critical for ensuring that children and other vulnerable populations are protected from lead exposure hazards.

In contexts where this threshold is exceeded, it indicates a greater potential for lead-related health risks, thus necessitating further assessment, possible remediation, or more detailed lead risk assessments to mitigate those risks effectively.