FILE - This June 2, 2010 file photo shows a customer putting plastics bags in a recycling bin at a grocery store in Palo Alto, Calif. The Los Angeles City Council is set to vote on whether to ban plastic bags at grocery stores in the nation's second-largest city. Backers of the measure say it is necessary to keep massive numbers of single-use plastic bags out of landfills, rivers and the ocean. (AP Photo/Paul Sakuma, File)