Last year was the most destructive fire season in California’s history. Over 7,600 wildfires burned nearly two million acres. As a result, on July 18, the California Department of Industrial Relations (DIR) Occupational Safety Health Standards Board adopted an emergency regulation to protect workers from hazards associated with wildfire smoke. The regulation is now in effect, following its approval on July 29, 2019, by the Office of Administrative Law.

The emergency regulation will be effective for one year, and applies where the current Air Quality Index (AQI) for airborne particulate matter (PM) 2.5 is 151 or greater (the AQI scale is from 0 to 500, and a 151 AQI is considered “unhealthy”), or where employers should reasonably anticipate that employees could be exposed to wildfire smoke.

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