Deschutes County Sheriff's deputies are investigating a possible HAZMAT incident near the Bend Airport. The Sheriff's Office is trying to find out who dumped some unknown white substance into an irrigation canal Sunday afternoon along Waugh Road east of the Bend Airport. Bystanders say a man driving a tan or tan and brown pickup with a canopy and pulling a utility trailer stopped along Waugh Road about 1:30 p.m.. He dumped some white substance into the canal from a container sitting on the trailer, and then left the area. When deputies arrived, they could see the white substance in the water. Central Oregon Irrigation District (COID) says there is no indication the dumping was done to tamper or poison the canal and says it appears the male was cleaning some piece of equipment and used the canal as a dumpsite. If you know anything about this incident, you are asked to contact the Deschutes County Sheriff's Office 541-693-6911.