I am not blaming EPA on this-they would be concerned about any products left behind after the place was abandoned-like paints,cleaners,chemicals used by the shopping center employees for its maintenance.And chemicals left behind in hobby stores and sporting goods stores.electrical equipment like transformers and the refrigents in the centers HVAC equipment.So there are things in old shopping centers that could be of concern to EPA.Watch some of the videos on YouTube about abandoned places and you would be surprized at the hazardous things left in those places!!There were even alcholic beverages left behind in some abandoned resturants-places broken into or unlocked that kids or others could get into!!You could figure the rest!So yes,abandoned shopping centers could leave some hazards.