Table 2. Evaluation Factors for the Evaluation of Remedial Technologies

Contributor01 EG

6 years ago

Table 2. Evaluation Factors for the Evaluation of Remedial Technologies
	Monitored natural recovery		In Situ treatment	Capping		Removal
Characteristics	MNR	EMNR		conventional capping	amended capping	hydraulic dredging	mechanical dredging	excavation
Physical characteristics
Sediment stability	H	H	H	M	M	L	L	L
Sediment deposition rate	H	H	H	M	M	L	L	L
Erosional potential of bedded sediments	H	H	H	M	M	L	L	L
Water depth	M	M	H	H	H	H	H	H
In-water & shoreline structure	M	M	M	M	M	H	H	H
Presence of hard bottom	M	M	L	L	L	H	H	H
Presence of debris	L	L	M	M	M	H	H	M
Hydrodynamics	H	H	H	H	H	M	M	M
Slope and slope stability	M	M	H	H	H	M	M	M
Groundwater/surface water interaction	H	H	H	H	H	L	L	M
Sediment and porewater geochemitry	M	M	H	M	H	L	L	L
Sediment characteristics
Geotechnical properties	M	M	M	H	H	H	H	H
Grain size distribution	L	L	M	L	L	M	L	L
Potential for resuspension/release /residual	L	L	M	M	M	H	H	H
Sediment consolidation (pore-water expression) liquifaction	L	L	M	H	H	L	L	L
Benthic community structure	M	M	M	H	H	L	L	L
Contaminant characteristics
Horizontal and vertical distribution of contamination	H	H	H	H	H	H	H	H
Contaminant type	H	H	H	M	M	H	H	H
Contaminant concentration	H	H	H	H	H	H	H	H
Exposure pathway	H	H	H	M	M	L	L	L
Presence of source material	H	H	H	H	H	H	H	H
Contaminant mobility	H	H	H	H	M	M	M	L
Contaminant bioavailability	H	H	H	L	L	L	L	L
Contaminant bioaccumulation and biomagnification potential	H	H	H	L	L	L	L	L
Contaminant transformation/degradation	H	H	H	M	M	L	L	L
Source identification and control	H	H	H	H	H	H	H	H
Ebullition	L	L	M	M	M	L	L	L
Background	H	H	H	H	H	H	H	H
Land and waterway use characteristics
Watershed sources and impacts	H	H	H	H	H	H	H	H
Cultural and archaeological resources	L	M	M	M	M	H	H	H
Site access (staging, treatment, transport, disposal)	M	M	M	H	H	H	H	H
Current and anticipated waterway use	M	M	M	L	L	H	H	H
Current and future land use	L	L	L	L	L	M	M	M

H: Critical
M: Contributing
L: Unimportant