yes definitely. i think all of the 5 families have a presence there - personal and business. you got older guys who grew up in the city or the boros and moved out there. then younger guys coming up who grew up out there. just like NJ and the upstate suburbs. recently a colombo capo was arrested for trying to shake down a long island pizzera...and I think the waste management thing you're talking about was the Luccheses - Sal Avellino to be exact.

Nassau County is basically like an extension of Queens in my opinion. i'd imagine there's been a presence on long island for as long as the 5 families have been in existance