An Evaluation of Solidification/Stabilization for Sediments from the Puget Sound Naval Shipyard

Contaminated sediments from the Puget Sound Naval Shipyard were evaluated using solidification stabilization technologies to determine if the material could have beneficial uses. Varying ratios of four binders Portland cement, kiln dust, limefly ash, and Portland cementfly ash were evaluated on the material to determine if soil-like properties could be obtained from the sediment. Physical, chemical, and contaminant leaching tests were performed on the untreated and treated material to evaluate the potential of the treated material for use as a daily landfill cover or other beneficial use. The major focus of the study was to determine if any of the binders could produce a material that had soil-like properties and that reduced the leaching of contaminants from the product so that regulatory guidelines could be met for the use of the material.