Thank you for your report! This does not look like Emerald ash borer damage. EAB makes D-shaped holes through the bark about 1/8" wide. The galleries under the bark are S-shaped. Here is the address of Oregon Department of Agriculture's IPPM Survey and treatment projects EAB page

https://www.oregon.gov/oda/programs/IPPM/SurveyTreatment/Pages/EmeraldAshBorer.aspx

Scroll down to find photos of Emerald Ash Borer Look-Alikes, the EAB Response Plan for Oregon, and more information about how to recognize EAB attack.

Tom Valente
Oct. 9, 2024, 3:03 a.m.