NEWPORT BEACH – Moving a pile of sand could cost several homeowners here an even bigger pile of cash. The California Coastal Commission on Monday accused five residents with beachfront property of flattening protected sand dunes to improve their ocean views. The commission is ordering the dunes rebuilt – a process that could reach into the six-figure range. Considered important habitat for threatened birds, the dunes were allegedly seen as an obstruction by residents whose ocean vistas were blocked by the 3- to 6-foot-tall dunes. "Sand dunes are loved and hated," Newport Assistant City Manager Dave Kiff said. "The residents...