From everything I can find it is 12 cents per gallon. State & Federal tax adds another 42.6 cent per gallon. If you look at the attached presentation from Alachua Co. Office of Management & Budget, on pages 27-28 you'll see where I source these numbers from:
http://www.co.alachua.fl.us/assets/uploads/images/omb/ACCESSPresentati onMarch2008OMB.pdf
ProAdviser

