Table 6.2        Sediment Classification Criteria

 

Category

Description

L

Sediment with all contaminant levels not exceeding the Lower Chemical Exceedance Level (LCEL).  The material must be dredged, transported and disposed of in a manner which minimises the loss of contaminants either into solution or by resuspension.

M

Sediment with any one or more contaminant levels exceeding the Lower Chemical Exceedance Level (LCEL) and none exceeding the Upper Chemical Exceedance Level (UCEL).  The material must be dredged and transported with care, and must be effectively isolated from the environment upon final disposal unless appropriate biological tests demonstrate that the material will not adversely affect the marine environment.

H

Sediment with any one or more contaminant levels exceeding the Upper Chemical Exceedance Level (UCEL).  The material must be dredged and transported with great care, and must be effectively isolated from the environment upon final disposal.