Wildfire Smoke

The Department of Labor and Industries has adopted rules regulating employee exposure to wildfire smoke, codified as WAC 296-820. The rule applies broadly to any employees when specified particulate concentrations are present, regardless of the type of work being performed.  It does not apply to those working in buildings or enclosed vehicles.

WSU must inform employees working outdoors of the health effects of wildfire smoke exposure described above. WSU encourages employees with health conditions that may be negatively affected by smoke exposure to make arrangements for an accommodation in advance, if available, which could include an assignment to indoor work. Employees experiencing adverse health effects associated with smoke exposure are encouraged to seek medical treatment following established departmental leave policies.

Departments whose employees are expected to work outside when smoke may be present must implement a Wildfire Smoke plan as part of their departmental safety plan, including information to specify how department employees will be notified of smoke conditions, where they can access fresh air, and how they can obtain masks and other protections.

Wildfire smoke contains many components that are potentially harmful, but the main harmful pollutant for people who are not very close to the fire is “particulate matter” – the tiny particles suspended in the air.  The primary concern are the particulates that are less than 2.5 microns in diameter (commonly referred to as PM2.5).  These particulates can irritate the lungs and cause persistent coughing, phlegm, wheezing, or difficulty breathing. Particulate matter can also cause more serious problems, such as reduced lung function, bronchitis, worsening of asthma, heart failure, and early death.

Additional information from the Washington State Department of Health and the Department of Ecology:

https://doh.wa.gov/sites/default/files/legacy/Documents/4300//waqa%20infographic_English.pdf