Section 490.701 - Purpose and scope(a) This subpart implements provisions of the Energy Conservation Reauthorization Act of 1998 ( Pub. L. 105-388 ) that require, subject to some limitations, the allocation of credit to a fleet or covered person under Titles III and V of the Energy Policy Act of 1992 for the purchase of a qualifying volume of the biodiesel component of a fuel containing at least 20 percent biodiesel by volume.(b) Fleets and covered persons may use these credits to meet, in part, their mandated alternative fueled vehicle acquisition requirements.