What is the regulatory level for painted areas set by HUD and IDPH using XRF?

The regulatory level for painted areas set by the U.S. Department of Housing and Urban Development (HUD) and the Illinois Department of Public Health (IDPH) using X-Ray Fluorescence (XRF) is established at or above 1.0 mg/cm². This level is significant as it helps differentiate between lead-based paint that poses risks and levels at which intervention or remediation is required. XRF is a non-destructive tool used to measure the lead concentration in paint, making it a vital instrument for assessing lead hazards in homes and buildings, particularly those constructed before 1978 when lead-based paints were commonly used.

Setting the regulatory level at 1.0 mg/cm² ensures that properties are monitored effectively and that appropriate actions, such as remediation or management, are implemented to prevent lead exposure to occupants, especially young children who are more vulnerable to the harmful effects of lead poisoning. Understanding this threshold is crucial for lead risk assessors as they evaluate painted surfaces and determine the necessary steps for ensuring safety and compliance with public health regulations.