35 ILCS 105/3-40
As used in this Act, "gasohol" means motor fuel that is a blend of denatured ethanol and gasoline that contains no more than 1.25% water by weight. Prior to January 1, 2024, the blend must contain 90% gasoline and 10% denatured ethanol. On and after January 1, 2024, the blend must contain 85% gasoline and 15% denatured ethanol. A maximum of one percent error factor in the amount of denatured ethanol used in the blend is allowable to compensate for blending equipment variations. Any person who knowingly sells or represents as gasohol any fuel that does not qualify as gasohol under this Act is guilty of a business offense and shall be fined not more than $100 for each day that the sale or representation takes place after notification from the Department of Agriculture that the fuel in question does not qualify as gasohol.
35 ILCS 105/3-40