As we've noted many times, the Environmental Protection Agency (EPA) has waived the statutory cellulosic biofuel mandate for three straight years, but has not waived the overall advanced biofuel statutory mandate in which the cellulosic mandate is nested. Thus, while the cellulosic mandate has been reduced, the undifferentiated advanced mandate has effectively been increased by a cumulative 828 million gallons over these same three years.Therefore, through the waiver of cellulosic's mandate, the potential demand for biodiesel under the Renewable Fuel Standard (RFS) can vary between the specific biodiesel mandate of more than 1 billion gallons to a level that includes either a portion of or all of the undifferentiated advanced biofuels cat...