An employee working with lead-based paint removal has a blood lead level of 50 μg/dl. According to Cal/OSHA lead standards, what action is required?
Correct Answer
D) Remove from lead exposure until levels drop below 40 μg/dl
Cal/OSHA Section 1532.1 requires medical removal from lead exposure when blood lead levels reach 50 μg/dl or above, with return to work only after levels drop below 40 μg/dl.
Why This Is the Correct Answer
Cal/OSHA Section 1532.1 establishes specific blood lead level (BLL) thresholds for the construction industry. When a worker's BLL reaches or exceeds 50 μg/dl, medical removal from all lead-exposed work is mandatory. The worker may not return until their BLL drops below 40 μg/dl, confirmed by blood testing. This medical removal protection (MRP) also includes wage and benefit continuation requirements.
Why the Other Options Are Wrong
Option A: Reduce exposure and retest in 30 days
Retesting in 30 days while reducing exposure applies to lower BLL thresholds (around 40 μg/dl under some provisions), not the 50 μg/dl removal threshold. At 50 μg/dl, the standard does not permit continued lead exposure even at reduced levels — removal is mandatory immediately.
Option B: Continue work with increased monitoring
Continued work with increased monitoring is never acceptable once the 50 μg/dl removal threshold is reached. Continued exposure at this level poses serious health risks including neurological damage and kidney disease. Cal/OSHA mandates complete removal, not enhanced monitoring.
Option C: Provide additional personal protective equipment
Additional PPE does not substitute for medical removal once the BLL threshold is exceeded. PPE (respirators, gloves, coveralls) reduces future exposure but does not address the existing elevated lead already in the worker's bloodstream. Medical removal allows the body to naturally reduce the stored lead burden.
Memory Technique
Use the '50/40 Rule': Removed at 50, Return below 40. Visualize a traffic light — red at 50 (stop work), green below 40 (return to work). The gap between 50 and 40 is the 'medical removal zone' where the body needs time to flush lead.
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