A painting contractor is removing lead-based paint from a bridge built in 1965. The work involves dry scraping that will generate dust. What is the minimum respiratory protection required under Cal/OSHA?
Correct Answer
D) Full-face respirator with P100 filters
For lead work involving dry scraping that generates dust, Cal/OSHA typically requires full-face respirators with P100 filters due to high exposure potential.
Why This Is the Correct Answer
Dry scraping of lead-based paint generates significant airborne lead dust, creating high exposure potential that can far exceed the Cal/OSHA permissible exposure limit (PEL) of 50 μg/m³. For high-exposure lead work such as this, Cal/OSHA Title 8 Section 1532.1 requires at minimum a full-face respirator with P100 (HEPA) filters. The full-face piece provides both respiratory protection and eye/face protection against lead-contaminated dust, which is critical when dry scraping generates significant particulate.
Why the Other Options Are Wrong
Option A: Powered air-purifying respirator
A powered air-purifying respirator (PAPR) provides a higher protection factor than a standard half-face respirator and may be appropriate in some lead contexts, but it is not the stated minimum for this scenario. The question asks for the minimum required — full-face with P100 is that minimum for high-dust lead removal operations. PAPRs are optional upgrades, not the regulatory floor.
Option B: Half-face respirator with P100 filters
A half-face respirator with P100 filters provides adequate particulate filtration but does not protect the eyes and face from lead dust — a critical shortcoming when dry scraping generates visible dust clouds. Cal/OSHA requires full-face protection for high-exposure lead tasks like this one. The half-face option is insufficient for this exposure level.
Option C: N95 filtering facepiece
An N95 filtering facepiece is completely inadequate for this work. N95s are rated for nuisance dust and some biological hazards, but they are NOT approved for lead abatement work. They offer no eye protection, limited seal integrity, and a much lower assigned protection factor than required for lead dust generated by dry scraping on a structure built in 1965 (when lead paint was common and likely heavily applied).
Memory Technique
Remember: 'Lead dust + dry scraping = FULL face, P100 lace.' The full-face piece covers your eyes (lead can absorb through eye membranes) and your airways. Think of a bridge built before 1978 as a lead mine — treat it with maximum vigilance. Half measures get you half-poisoned.
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