A painting contractor discovers deteriorated paint on a pre-1978 structure. What triggers Cal/OSHA lead-in-construction requirements?
Correct Answer
B) Disturbance that could reasonably result in employee exposure
Cal/OSHA lead-in-construction standards apply when work activities could reasonably be expected to result in employee exposure to lead, regardless of surface area.
Why This Is the Correct Answer
Cal/OSHA's lead-in-construction standard (Title 8, Section 1532.1) applies whenever work activities could reasonably be expected to result in employee exposure to lead — regardless of the surface area disturbed or the actual lead content confirmed by testing. The standard is exposure-based: if there's a reasonable expectation of lead exposure from disturbing the paint, all requirements apply.
Why the Other Options Are Wrong
Option A: Any disturbance of pre-1978 paint
Not every disturbance of pre-1978 paint automatically triggers lead requirements — a sticker placed on a pre-1978 painted wall, for example, does not create lead exposure. The trigger is the reasonable expectation of employee exposure, not the mere fact that the structure predates 1978.
Option C: Paint testing positive for any amount of lead
While testing positive for any amount of lead is relevant information, the regulatory trigger is not the test result per se — it is the reasonable expectation of exposure during the work activity. Additionally, all paints in pre-1978 buildings are presumed to contain lead unless tested and found otherwise; testing confirms, but expectation of exposure drives compliance.
Option D: Disturbing more than 100 square feet of painted surface
There is no 100-square-foot threshold in Cal/OSHA's lead-in-construction standard. Surface area is not the trigger. This misconception may arise from confusion with the asbestos notification threshold (100 sq ft) or RRP rules under EPA's lead paint renovation program.
Memory Technique
'Lead exposure = reasonable expectation.' If the work could expose a worker to lead dust or fumes, all Cal/OSHA lead requirements kick in immediately — no testing required first, no area threshold to cross.
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