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Backfill [1]

Material used to fill the excavation around the tanks and piping at an underground storage system site.

Native soil removed from the excavation is rarely suitable as backfill material. Backfill material is generally specified to be pea gravel, crushed stone, or sand.

See also Pea gravel [2].

Source URL (modified on 10/01/2014): https://testing.pei.org/wiki/backfill

Links
[1] https://testing.pei.org/wiki/backfill
[2] https://testing.pei.org/pei/node/352