Last Sunday I drove to Cape Disappointment with Elise & Isabel. We were scouting the area to take some homeschooled kids on a lichen walk in February. I ended up finding Erioderma sorediatum on a spruce right on the trail! There were many small thalli on the branches. I wasn't able to find it on other trees but I had limited time to look. This is the same location with the huge patch of Pseudocyphellaria hawaiiensis that Elise found on mossy rock right off the beach.
Here is the iNaturalist post: https://www.inaturalist.org/observations/334438837
