Section 206.8745(6), F.S., grants a refund, as provided by rule, for undyed tax-paid diesel fuel that is consumed by a power take-off unit or engine exhaust for the purpose of unloading bulk cargo by pumping when the power take-off unit or engine exhaust is mounted on a motor vehicle that has no separate fuel tank. The purpose of this rulemaking is to provide the standards for granting refunds of the tax paid on undyed diesel fuel that is consumed by a power take-off unit or engine exhaust for the purpose of unloading bulk cargo by pumping using a hydraulic, pneumatic, or any other kind of pump. When in effect, proposed Rule 12B-5.130, F.A.C. (Refunds), and the proposed revisions to Form DR-309639, Application for Refund of Tax Paid on Undyed Diesel Used for Off-road or Other Exempt Purposes, incorporated by reference in Rule 12B-5.150, F.A.C. (Public Use Forms), will provide how a refund of tax paid on diesel fuel used by a power take-off unit or engine exhaust for the purpose of unloading bulk cargo by pumping will be granted by the Department.