Section 324.16904a - End user; exemption(1) Except as provided in subsection (2), an end-user is exempt from this part for scrap tires stored on the site of the end-user if not less than 75% of the scrap tires, by weight or volume, that are stored on site each calendar year are recycled or used for resource recovery during that year, and the end-user annually certifies his or her compliance with this section on a form approved by the department.(2) All end-users shall comply with the requirements of section 16906.Add. 1997, Act 17, Imd. Eff. 6/11/1997 ;--Am. 2002, Act 496, Imd. Eff. 7/3/2002 .