Special additional duty exemption for biodiesel-blended high speed diesel permits nil levy where appropriate excise duties are paid. An amendment inserts an exemption granting a nil rate of special additional excise duty for high speed diesel blended with biodiesel where the blend predominantly consists of high speed diesel and the constituent fuels have had the appropriate duties of excise paid. 'Appropriate duties of excise' is defined to include duties under the First and Second Schedules to the Central Excise Tariff Act, the additional duty under the Finance Act, 1999, and the special additional duty under the Finance Act, 2002, read with specified notifications.