Ethanol blended petrol exemption: notification inserts Nil-duty entries for specified ethanol blends and updates biodiesel blend treatment. Inserts Nil-duty entries in Notification No. 28/2002-Central Excise for petrol blended with ethanol that meets specified volumetric composition and BIS specification 17586, defining appropriate duties of excise to include Fourth Schedule duties and enumerated additional excise levies, and defining applicable Central/State/Union territory/Integrated taxes as GST levies. Also substitutes the diesel entry to describe a blend with a dominant proportion of high speed diesel and a specified proportion of bio-diesel, requiring that component portions have the appropriate excise or GST levies paid.