A fire that broke out early yesterday  morning at a St. Clair Township marina is expected to result in millions of dollars worth of damages.  A storage building that housed  more than 65 boats and at least four vehicles was engulfed in flames when firefighters arrived at the scene at about 7:15 a.m. Tuesday.  While that building was a total loss, the good news is that firefighters were able to prevent the blaze from spreading to an adjacent storage building.  A stay-in-place order was issued by the St. Clair Township fire department. Residents were told to remain indoors, close windows and doors, and shut off furnace air intakes.  The all-clear was issued at about 9:00 p.m.  The cause of the fire is still unknown.