|
Contaminants |
LCEL |
UCEL |
|
Heavy Metal (mg/kg dry weight) |
||
|
Cadmium (Cd) |
1.5 |
4 |
|
Chromium (Cr) |
80 |
160 |
|
Copper
(Cu) |
65 |
110 |
|
Mercury
(Hg) |
0.5 |
1 |
|
Nickel
(Ni) |
40 |
40 |
|
Lead
(Pb) |
75 |
110 |
|
Silver
(Ag) |
1 |
2 |
|
Zinc
(Zn) |
200 |
270 |
|
Metalloid (mg/kg dry weight) |
||
|
Arsenic |
12 |
42 |
|
Organic-PAHs (µg/kg dry weight) |
||
|
PAHs
(Low Molecular Weight) |
550 |
3160 |
|
PAHs
(High Molecular Weight) |
1700 |
9600 |
|
Organic-non-PAHs (µg/kg dry weight) |
||
|
Total
PCBs |
23 |
180 |
Source: Appendix A of WBTC No. 3/2000 Management of Dredged / Excavated
Sediment
Note: LCEL – Lower
Chemical Exceedance Level
UCEL
– Upper Chemical Exceedance
Level