Notice of Intended Changes List

Spring 2026 Notice of Intended Changes List (NICs)

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CHEMICAL SUBSTANCES TLVs®
2026 NOTICE OF INTENDED CHANGES (NIC)
Aniline
n-Butyl propionate
Carbon monoxide (comment period closed)
Citronellol
Geraniol and related compounds
Propargyl alcohol

PHYSICAL AGENTS TLVs®
2026 NOTICE OF INTENDED CHANGES (NIC) 
None

BIOLOGICAL EXPOSURE INDICES (BEIs®)
2026 NOTICE OF INTENDED CHANGES (NIC) 
Methyl ethyl ketone