LOS ANGELES (CBSLA.com) — Angelenos have said goodbye to 2013 – and to plastic bags.

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KNX 1070’s Margaret Carrero reports starting Wednesday, the city of Los Angeles became the largest U.S. city to ban single-use plastic bags at major grocery stores.

Shoppers now have to choose between bringing their own reusable bags or buying paper bags that cost 10 cents apiece.

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Similar laws are already on the books in other Southland cities, including Glendale, Pasadena and Santa Monica.

City Councilman Paul Koretz, who authored the measure, said the law will go a long way towards ensuring a brighter environmental future for the city.

“We use up over 2 billion plastic bags a year in L.A. alone,” Koretz said. “It’s such a great source of litter, it causes a lot of harm to our rivers and our oceans.”

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Smaller “mom-and-pop” type stores will have until July 1 to comply with the new law.