Washington Permissible Exposure Limits: What you need to know

Washington has adopted permissible exposure limits (PELs) for certain air contaminants in general industry workplaces that are stricter than federal requirements.

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The Washington Department of Labor and Industries (DLI) administers and enforces workplace safety and health rules.

WAC 296-841-100 to 296-841-300

Washington has adopted the federal "Z tables" of air contaminants (Z tables at 29 CFR 1910.1000) with stricter exposure limits for many substances, and added several hazardous substances. The state's air contaminants standard for agriculture contains a shorter table of chemicals.

Federal OSHA had revised its Z tables of hazardous substances and PELs in the 1980s to include the substances adopted by Washington's standards, but in 1989 a federal circuit court struck down the OSHA revisions. Several states, including California and Oregon, retained the revised OSHA Z tables, which are stricter than existing federal standards.

WAC 296-841-20025

For a copy of the PEL table, click here: http://www.lni.wa.gov/Safety/Rules/Chapter/841/WAC296-841.pdf#WAC_296_841_20025.

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