I saw these shrubs with alternate long leaves without teeth on West 30 Ave btw Highbury & Wallace Streets.
The city database does list Quercus phellos on the 3800 block of W. 30th. Joseph and I have had a little off-forum discussion about tree vs. shrub. He thought unlikely to reach 10 m. in our climate would be shrub. I said single trunk and much taller than he is would be tree. The Japanese tree lilacs now being planted on city streets are considered trees and they would not exceed 10 m. maybe ever. @Egan Davis (of UBCBG) has said if it supports his weight, it's a tree, but that might have been in jest.