35 Ill. Adm. Code 811.105
Compaction
Section 811
Section 811.105Â Compaction
All waste shall be deposited at
the lowest part of the active face, and compacted to the highest achievable
density necessary to minimize void space and settlement unless precluded by
extreme weather conditions. The Agency may approve an alternative location for
placement of wastes, if the operator demonstrates that it is required under the
conditions existing at the site or for reasons of safety.