"Tire derived fuel" means a product made from used tires to exact specifications of a system designed to accept a tire derived fuel as a primary or supplemental fuel source.
415 ILCS 5/54.10b
"Tire derived fuel" means a product made from used tires to exact specifications of a system designed to accept a tire derived fuel as a primary or supplemental fuel source.
415 ILCS 5/54.10b