 |
||
|
|
||
|
Page Title:
Table 2. Selected Contaminants from Previous Dredged Material Studied, mg kg-1 |
||
| |||||||||||||||
|
|
 Technical Note DOER-C9
November 1999
Table 2
Selected Contaminants from Previous Dredged Material Studied, mg kg-1
Indiana Harbor1
Blackrock Harbor2
New Bedford Harbor3
Parameter
36.8
22.9
8.66
Cadmium
22.2
22.4
35.4
514
1651
754
Copper
266
2728.4
1730
Lead
933
397.8
2013
Mercury
0.262
2.0
2.59
Nickel
120
178.8
122
Zinc
3785
1307.1
3017
PCB 1242
<0.2
5.5
887
PCB 1248
29.4
NA
NA
PCB 1254
<0.2
9.3
662
Phenanthrene
210
5
9.6
Fluoranthene
175
6.3
8.7
Benzo(a)Pyrene
115
3.9
7.6
1
Environmental Laboratory 1987.
2
Brandon et al. 1991.
3 Myers and Brannon 1989.
In some cases, particularly for saltwater dredged material, phytoreclamation will be initiated after
the conversion of dredged material into a manufactured soil product. A manufactured soil may be
processed with aged dredged material from an existing CDF or from freshly dredged sediment at a
processing facility or CDF. Phytoreclamation strategies must be capable of addressing these
specific needs.
DISCUSSIONS ON PHYTORECLAMATION APPROACHES TO DREDGED MATERIAL
CLEANUP: A number of factors must be considered prior to initiating a phytoreclamation process
in the field. Age and condition of dredged material in existing CDFs may determine the process
selection. Freshly deposited material and material in some older CDFs will require dewatering prior
to plant establishment. The selection of plant species will be contaminant and site specific as plants
that are noted as effective in reducing certain contaminants may unfortunately not grow sufficiently
in certain climates or soil types. Other difficulties may include the patent and/or licensing require-
ments to use some phytoreclamation processes and obtaining certain germplasms. All of these must
be taken into consideration when developing a strategy for using phytoreclamation to reduce
contaminant concentrations in dredged material. The group concluded that a standard sequence of
events should precede any application of a full-scale phytoreclamation effort in the field. The
phytoreclamation framework, described in Price and Lee (1999), should provide guidance in
determining the most effective phytoreclamation approach if one is available. Application of
phytoreclamation to the field must follow the most effective approaches determined in this
framework.
3
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us - Support Integrated Publishing |
