Thank you for your report! Many ash trees have dead limbs from drought or ice damage. Several species of borers live in the dead wood. EAB makes S-shaped galleries and D-shaped exit holes about 1/8" wide. 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, so that you can monitor your trees.

Please attach a photo here if you find damage that matches the description of EAB attack.

Tom Valente
Oct. 30, 2023, 6:20 a.m.