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adjustment. Dechlorination costs run from $200-$500 per cubic yard. Soil 

 washing is not very effective on fine sediment particles which tend to bind 

 contaminants. Costs associated with this technology include sediment 

 removal and transport, sediment screening, disposal of treated sediment, 

 and treatment of wastewater. Typical soil washing costs are approximately 

 $50 per cubic yard. Solvent extraction is not effective for inorganic 

 contaminants, and requires many of the same pretreatment steps listed for 

 dechlorination. Costs of this technology range from $200-$600 per cubic 

 yard. Use of solidification/stabilization methods is limited by problems 

 associated with reagent placement, erosion, and long term monitoring 

 requirements. Little is known about the costs of large scale 

 solidification/stabilization treatment or its toxic byproducts. Incineration 

 costs include air pollution. Another problem associated with incineration is 

 that some contaminants can pass through the process or become more 

 mobile in the ash than they were in the original sediment. Other costs 

 associated with incineration include removal and transport of the 

 contaminated material, sediment preparation (which can include dewatering 

 and particle size separation), and landfill of treated solids. Costs are 

 variable, but can range from $250-$350 per cubic yard. Thermal desorption 

 can be used to remove volatile organic compounds from contaminated 

 sediment at a cost of between $100-$450 per cubic yard. This process also 

 requires removal and transport of contaminated sediment, and a series of 

 preparation steps in which large debris is screened and particle size 

 separation is effected. All of these processes must be refined to make them 

 cost effective on a large scale. 



