What is the 10 cent bag fee in California?

Could you please clarify what you mean by the "10 cent bag fee in California"? Are you referring to a recent legislation or policy implemented in the state that imposes a 10-cent charge on single-use plastic or paper bags provided by retailers to customers at the point of sale? If so, this fee is typically intended to encourage the use of reusable bags and reduce waste. Is there anything else specific you'd like to know about this fee or its implementation?