Some Consistency, Please!

Here is an interesting case, recorded at University Hall in the University of Denver, no less. After starting with the appropriate terminology, creating a "Garden Level", for no apparent reason, the folks in charge of the naming convention for this building point us to the first, second and third "Floors". This is the first building I've seen where both naming conventions ("Level" and "Floor") are used simultaneously. I guess these folks think they can have their cake and eat it too.

I am appalled this clear violation of the parallel structure English professors work so hard to instill in their pupils happens in a reputable institution of higher learning. Besides, if you're going to do it, why wouldn't you use the word "Floor" for the lowest level and reserve the word "Level" for the top?