Green Ash is a common, fast growing tree that's widely planted and grows virtually everywhere east of the Rockies. In nature, it's usually found in bottomlands. They get around 60 feet tall with a crown 40 or so feet wide. Because of its wide range, there are many subspecies that exist. This one may be Fraxinus pennsylvanica var. lanceolata because I did not find any pubescence on the underside of the leaves. Ash trees are easily identified by their large compound leaves and coarsely divided branches which are somewhat rubbery or flexible.