Lead-based paint is defined as paint, varnish, shellac, or other coating on surfaces that contain what thresholds of lead?

Lead-based paint is defined as paint, varnish, shellac, or other coating on surfaces that contain what thresholds of lead?

• A. 1.0 mg/cm2 or more lead, or 0.5% or more lead by weight
• B. 0.1 mg/cm2 or more lead, or 0.05% by weight
• C. 2.0 mg/cm2 or more lead, or 1.0% by weight
• D. 0.5 mg/cm2 or more lead, or 0.25% by weight

Answer: (A)

Lead-based paint is defined by two threshold measurements: the amount of lead by surface area and the amount of lead by weight. A coating is considered lead-based if it contains at least 1.0 mg of lead per square centimeter, or if it contains at least 0.5% lead by weight. Because either criterion being met qualifies the coating as lead-based, inspectors use tools like XRF analyzers (for area-based measurements) or lab analysis of paint chips (for weight percent) to determine compliance. The specific numbers above—1.0 mg/cm2 and 0.5% by weight—are the regulatory thresholds used in practice. Other numerical options don’t match these established standards, so they wouldn’t correctly identify lead-based coatings.

Lead-based paint is defined by two threshold measurements: the amount of lead by surface area and the amount of lead by weight. A coating is considered lead-based if it contains at least 1.0 mg of lead per square centimeter, or if it contains at least 0.5% lead by weight. Because either criterion being met qualifies the coating as lead-based, inspectors use tools like XRF analyzers (for area-based measurements) or lab analysis of paint chips (for weight percent) to determine compliance. The specific numbers above—1.0 mg/cm2 and 0.5% by weight—are the regulatory thresholds used in practice. Other numerical options don’t match these established standards, so they wouldn’t correctly identify lead-based coatings.