"Outdoor burning of residential materials in Thurston County is prohibited July 15 through October 15 each year. This seasonal prohibition, crafted by the Thurston County Residential Outdoor Burning Committee, has been in effect for five years. The Committee includes representatives from Thurston County, the state Department of Natural Resources (DNR), local fire agencies and Olympic Region Clean Air Agency (ORCAA),
quoting the Olympic Region Clean Air Agency (ORCAA) website.