LONG BEACH - Long Beach residents say Tropical Storm Irene may have been nothing compared to the fury that Sandy could bring at the start of the week. City leaders say their biggest fear is flooding from storm surges and high tides. Crews have already begun building a huge berm of sand along the boardwalk to keep the Atlantic Ocean from flooding the streets. Long Beach Police Commissioner Michael Tangney says the city has given out 19,000 sand bags to residents in hopes of protecting property from flooding. The U.S. Geological Survey predicts more than 40 percent of Long Island's southern coast will experience dune and beach erosion when Hurricane Sandy makes landfall. Nassau Executive Ed Mangano has declared a state of emergency for the county ahead of Hurricane Sandy.LI Hurricane Preparedness ResourcesHurricane Sandy Evacuation InformationLI Weather Center