Environmental Health & Safety


Permissible Exposure Limits (PELs), established by the Washington Department of Safety and Health (DOSH), shall not be exceeded (see Appendix B). Eight-hour and short-term permissible exposure limits to many chemicals have been set by DOSH to prevent adverse health effects in workers. Local exhaust ventilation systems may be required in order to reduce exposure levels to these acceptable limits. For assistance in measuring chemical exposures and in comparing them to the appropriate limits, please contact Environmental Health & Safety at 335-3041.

1.    Fume Hood Use

2.    Other Ventilation Systems

3.    Maintenance of Ventilation Systems

4.    Site Specific Ventilation Information


Environmental Health & Safety, PO Box 641172, Washington State University, Pullman WA 99164-1172, 509-335-3041, Contact Us