IMHO, it’s missing the open pores of red oak (and they’re pretty distinctive), but it’s some kind of oak. I only got to see the trunk (not the leaves or the overall shape of the tree), so it’s hard to say. Could be a pin oak - they are in the same family and are commonly used as landscaping plants since they grow relatively quickly. I counted 50 rings and the trunk was 40 inches across, so that’s quick-growing in my book.
FWIW, the sawdust smells like oak to me.
This article recommends spraying a 10% solution of sodium nitrate on the oak: white oak will react, turning nearly indigo blue, while red oak will not.