Iowa Admin. Code r. 567-116.2
As used in this chapter:
"Passenger tire equivalent" means a conversion measurement that is used to estimate waste tire weights and volume amounts and in which one passenger car tire with a rim diameter of 17 inches or less is equal to 20 pounds. One cubic yard of volume shall contain 15 passenger tire equivalents. Tires larger than a passenger car tire shall be evaluated for volume using this conversion measurement.
"Permit" means a permit issued by the department to establish, construct, modify, own, or operate a waste tire storage or processing site.
"Processing" means producing or manufacturing usable materials from waste tires.
"Processing site " means a site which is used for the processing of waste tires and which is owned or operated by a tire processor who has a permit for the site.
"Tire collector" means a permitted person or business that owns or operates a site used for the storage, collection, or deposit of more than 500 waste tires or an authorized vehicle recycler who is licensed by the department of transportation pursuant to Iowa Code section 321H4. and who owns or operates a site used for the storage, collection, or deposit of more than 3,500 waste tires.
"Tire processor" means a permitted individual or business that processes tires through grinding, shredding, or other means, thereby producing a material that is readily suitable for marketing into product manufacturing, energy recovery, or other beneficial reuse markets. "Tire processor" does not mean a person who retreads tire casings or who collects and stores tires.
"Waste tire, " as defined in Iowa Code section 455D. 11, means a tire that is no longer suitable for its originally intended purpose due to wear, damage, or defect. This definition shall include a tire mounted on a rim, but not on a vehicle. "Waste tire" does not include a nonpneumatic tire.
"Waste tire hauler " means a person who transports for hire more than 40 waste tires in a single load. This definition includes persons and businesses that collect fees to provide hauling and pick-up services for the disposal or removal of tires from other persons or businesses.
"Waste tire stockpile" means a permitted site that is used for the storage, collection, or deposit of waste tires or tire bales, including indoor, outdoor, and underground storage.
Iowa Admin. Code r. 567-116.2