I had this experience when I was at Drew for the summer, and it is deeply frustrating. However, it's also a fact of life. I live in an apartment now, and about once a week I'm woken up by the landscaping company mowing the lawn at my building, or the building next door. It drives me nuts, but there is really nothing that I can do about it. Someone's lawn has to get mowed at 7am.
Perhaps you could ask facilities if they might adjust their mowing schedule so that areas near Hoyt are mowed later in the morning?