Section 4134.  Floodable Backfill Material

4134.01     DESCRIPTION.

Uncrushed natural sand and gravel or natural sand.

4134.02     GRADATION.

A.    For natural sand and gravel use Gradation No. 1 or Gradation No. 35 of the Aggregate Gradation Table, Article 4109.02.

B.    For natural sand use Gradation No. 36 of the Aggregate Gradation Table, Article 4109.02.