Section 490.703 - Biodiesel fuel use credit allocation(a) DOE shall allocate to a fleet or covered person one credit for each qualifying volume of the biodiesel component of a fuel that contains at least 20 percent biodiesel by volume if:(1) Each qualifying volume of the biodiesel component of a fuel was purchased after November 13, 1998;(2) The biodiesel component of fuel is used in vehicles owned or operated by the fleet or covered person; and(3) The biodiesel component of the fuel is used in vehicles weighing more than 8,500 pounds gross vehicle weight rating.(b) No credit shall be allocated under this subpart for a purchase of the biodiesel component of a fuel if the fuel is:(1) For use in alternative fueled vehicles which have been used to satisfy the alternative fueled vehicle acquisition requirements under Titles III and V of the Energy Policy Act of 1992; or(2) Required by Federal or State law.64 FR 27174, May 19, 1999, as amended at 66 FR 2210 , Jan. 11, 2001