Under OSHA 1926.55, which standard provides legally enforceable maximum exposure levels for airborne contaminants on construction sites?
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A
Permissible Exposure Limits (PELs) as listed in OSHA Tables Z-1, Z-2, and Z-3
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B
Threshold Limit Values (TLVs) published by ACGIH
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C
NIOSH Recommended Exposure Limits (RELs) only
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D
OSHA only regulates respiratory hazards, not chemical exposures on construction sites