[runa]

If there was a really good chance UTG was going to re-raise you would have to factor that into the total cost of calling, but I think given your reads as a passive player you're probably safe just calling here.

I think its a call on the turn even if UTG folds, which I can't see unless this player is really really weak tight. I think if you devalue your ace outs sufficiently and account for the small chance of a split pot if your str8 hits, I think you still come out to 8 outs or so, which is 4.1:1 and its close but you can call, expecting to make up some of that in implied odds if you hit.