evaluation of the relatively long-term 

 effects of capping contaminated dredged 

 material. This data set represents the 

 longest single record of capping activity 

 and covers a broad spectrum of physical, 

 chemical, and biological characteristics. 

 The results provide baseline evidence in 

 support of capping as a viable disposal 

 method. As capping moves into deeper 

 water, the lessons learned in shallow water 

 will be available for program design and 

 testing. 



The following report summarizes 

 capping activities at CLIS over a period of 

 four years and collects into one document 

 the monitoring results obtained as part of 

 these projects. The report first provides 

 background on the capping operations and 

 reviews the operational guidelines as they 

 have been modified with experience. It 

 then describes the results of monitoring 

 and subsequent investigations conducted to 

 assess the physical, biological, and 

 chemical structure of the capped mounds. 

 Finally, the report recommends guidelines 

 for both capping operations and associated 

 monitoring activities. 



Sediment Capping of Subaqueous Dredged Material Disposal Mounds 



