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Class 4 (Dredged Marine Sand)

  Class 4 (Dredged Marine Sand)

Class 4 fill is a dredged sand type material normally employed as common fill. The material shall be evenly graded and shall lie within the grading envelope given below when tested. The material shall be non-plastic when tested. The total sulphate content as SO3 of the material shall not exceed 1% and the total soluble salts shall not exceed 2%.