To require that until a comprehensive study is completed, the volume of cellulosic biofuel mandated under the renewable fuel program be limited to what is commercially available, and for other purposes.

This bill requires the Environmental Protection Agency (EPA) to limit the total volume of cellulosic biofuel in transportation fuel under the renewable fuel standard to what is commercially available until the EPA submits to Congress a comprehensive study on cellulosic biofuel and the environmental and economic impacts of producing such fuel.