OSHA hereby promulgates a final rule for occupational exposures to
hazardous chemicals in laboratories. The final standard applies to
all laboratories that use hazardous chemicals in accordance with the
definition of laboratory use and scale provided in the standard.
Generally, where this standard applies it supersedes provisions of
all other standards in 29 CFR part 1910, subpart Z, except in
specific instances identified by this standard. Laboratories covered
by the standard are obligated to maintain employee exposures at or
below PELs specified in 29 CFR subpart Z, but the manner in which it
is achieved will be determined by each employer through formulation
and implementation of a Chemical Hygiene Plan (CHP). The Standard is
effective May 1, 1990; employers must have completed an appropriate
Chemical Hygiene Plan and commenced carrying it out by January 31,
1991. An Appendix contains Nat'l Research Council's non-mandatory
recommendations concerning chemical hygiene in laboratories. Contact
James Foster, 523-8151 for information.