Nice job Starlet! I'll take it. It's a Blue Oak, Quercus douglasii.
It says other common names are Californis Blue Oak,Iron Oak, Mountain White Oak, and Mountain Oak.
The number of blue oaks has decreased because there has been no natural regeneration. It is not considered endangered, however, because of its wide distribution across the region.
Their are so many different species of oaks out west it blows my mind.
Cool lookin tree though!