Lead work activities that disturb more than how many square feet of lead-based paint require notification to Cal/OSHA?
Correct Answer
C) 20 square feet
Cal/OSHA Section 1532.1 requires notification when lead work activities disturb more than 20 square feet of lead-based paint on exterior surfaces or more than 2 square feet in interior rooms.
Why This Is the Correct Answer
Option C is correct. Cal/OSHA Section 1532.1 (the lead in construction standard) requires employers to notify Cal/OSHA when lead work activities will disturb more than 20 square feet of lead-based paint on exterior surfaces (or more than 2 square feet in interior rooms or enclosed spaces). The 20 square foot threshold is the key exterior notification trigger.
Why the Other Options Are Wrong
Option A: 6 square feet
Option A is incorrect. Six square feet is not the Cal/OSHA notification threshold for lead work. This number is not specified in the lead standard for notification purposes, though some EPA RRP (renovation, repair and painting) rules use similar small thresholds for different purposes.
Option B: 10 square feet
Option B is incorrect. Ten square feet is also not the Cal/OSHA lead notification threshold. Candidates may confuse this with EPA or HUD thresholds related to lead-safe practices in residential settings, which use different metrics.
Option D: 100 square feet
Option D is incorrect. One hundred square feet significantly exceeds the notification threshold. Using 100 square feet as the trigger would allow large amounts of lead paint disturbance without notifying Cal/OSHA, which would undermine worker protection and regulatory oversight.
Memory Technique
Lead notification: 20 exterior, 2 interior. Think 'outside is bigger' β 20 sq ft for outdoors where lead disperses, 2 sq ft inside where it concentrates in enclosed spaces. The ratio is 10:1, matching the relative hazard level difference between open-air and confined exposure.
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