The large mounds of fire debris that remain on Los Angeles County beaches have caused concerns about long-term effects on the environment and beachgoers. Rina Nakano reports.

Winter storms have washed debris from the California wildfires - timber, metal, and sediment - onto Los Angeles County beaches. Officials confirm most of the silt and ash is not hazardous and will naturally wash away,

Debris from January's wildfires - including ash and burned wood - has been turning up on beaches from Malibu to the South Bay, county officials say.