A US Federal Court issued a ruling last January 25 against the Environmental Protection Agency's 2012 target that requires refiners to mix 32.7 million liters of cellulosic biofuels into the gasoline and diesel products in the US. The decision of the D.C. Circuit Court upheld the petition against the EPA's 2012 cellulosic biofuel goal because the EPA did not make a "neutral" assessment of the amount of cellulosic biofuels that would be produced last year. Cellulosic biofuels are made from sources such as grasses, wood chips and agricultural waste. In 2005, the US Congress passed the Renewable Fuel Standard that seeks to reduce US reliance on petroleum oil and assumed that cellulosic biofuels would make up a significant portion of the US renewable energy target of 136 billion liters by 2022. However, development of cellulosic biofuel has been slow causing the refiners to file a petition against the unrealistic target.