415 ILCS 5/54.01

"Altered tire" means a used tire which has been altered so that it is no longer capable of holding accumulations of water, including, but not limited to, used tires that have been shredded, chopped, drilled with holes sufficient to assure drainage, slit longitudinally and stacked so as not to collect water, or wholly or partially filled with cement or other material to prevent the accumulation of water. "Alteration" or "altering" means action which produces an altered tire.