**7.2 Backfilling**

Alluvial sands that can serve as backfill are often locally available. The material could be brought to site by trucks and processed to satisfy the design specifications. It is also possible to lift material that was naturally sorted to meet the requirement. The material can then be dumped and spread in full dimension of the trench to its design level. Densification of the fill is not encouraged. The backfill serves as a transmission medium to the in-situ soil.
