Homeowners, business owners, flood mapping experts and Horry County leaders are concerned about the new Federal Emergency Management Agency’s flood zone maps. Lisa Bourcier, spokesperson for Horry County, said the county is under a 90-day review period for FEMA’s maps. That is scheduled to end July 16, but the county applied for a 30-day extension to have more time to study the maps and the data behind them. The county requested additional data from FEMA and is looking into hiring an outside consultant.