OSHA proposes to amend its existing air contaminant standards [1910.
1000, Tables Z-1, Z-2, Z-3, and add a new Table Z-4. The amendments
reduce permissible exposure limits for approximately 100 substances
now listed in the "Z-tables," raise the permissible exposure limit
for 1 substance, set permissible exposure limits for 205 substances
currently not regulated by OSHA, add or change STEL's for 70
substances, and, as appropriate, set skin, short-term or ceiling
limits. This notice includes a discussion of the policy and legal
issues, as well as a review of the health effects of the substances.
It also includes a summary of the preliminary regulatory analysis
with feasibility determinations organized by industry sector.