Mountain Hemlock brown needles and drooping
Multnomah County Oregon
"Some of the needles look more like sun burn or a burn of some kind. That is more of what I think when I see the damaged tissue just a light tan color with no variation and no transition to healthy tissue. . . . Could also be another aspect of a root rot."
If it is web blight, the side-by-side planting that's also close to the wall inhibits air circulation. Not a good thing. Further, no chemicals are listed for use by home gardeners.
Consider inviting at least 3 Certified Arborists for on-site evaluations and for their diagnosis , also opinions of what kind of treatment might be helpful. (We suggest Certified Arborists because they must pass an exam plus acquire continuing education units.)