The US Environmental Protection Agency (EPA) has proposed its 2013 percentage standards for four fuel categories that are part of the agency's Renewable Fuel Standard programme (RFS). The proposed 2013 overall volumes and standards are: 1. Biomass-based diesel (1.28 billion .gallons; 1.12%) 2. Advanced biofuels (2.75 billion gallons; 1.60%) 3. Cellulosic biofuels (14 million gallons; 0.008%) 4. Total renewable fuels (16.55 billion gallons; 9.63%).
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