Specifications include, but are not limited to: Foundations, including any walls, footings and masonry floors, shall be completely removed from the premises. Concrete slabs, steps, landings and sidewalks as well as asphalt if any are to be removed from the premises. Any signs and or sign foundations shall be completely removed from the premises. The exposed openings shall be backfilled with granular backfill and compacted using a self-propelled vibrating roller. The material for the backfill shall be deposited, spread and leveled in layers generally not exceeding 8 inches in thickness before compaction, unless specified differently in each parcel's exhibit. Each layer of backfill shall be compacted to the degree that no further appreciable consolidation is evidence under the action of the compaction equipment. The required compaction shall be attained for each layer before any material for a succeeding layer is placed thereon.