 Donya Ayaz is a heat mitigation specialist with King County. The strategy, a direct response to the 2021 heat dome that killed more than 30 county residents. Tim Hall, Northwest News Radio. And just ahead of our traffic update, I want to remind you that State Department of Transportation crews are going to be replacing expansion joints on I-5 again this weekend. So prepare for some massive backups on the region's main north and south thoroughfare.