A health hazard evaluation finds that a worker's 8-hour TWA benzene exposure is 0.4 ppm. OSHA's PEL for benzene is 1 ppm and the action level is 0.5 ppm. What is the appropriate next step?
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A
No action required; exposure is below both the action level and PEL
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B
Enroll the worker in medical surveillance because the action level is exceeded
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C
Issue respiratory protection immediately as the exposure exceeds the action level
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D
Report the exposure to OSHA as an imminent danger