No building materials or supplies of any kind except ballast or ties intended for immediate use shall be piled nearer to any main track or passing track than 9 feet from the centerline thereof; or nearer to any other track than 81/2 feet from the centerline thereof.
Ill. Admin. Code tit. 92, § 1500.300
Amended at 29 Ill. Reg. 20360, effective December 15, 2005