Table 1. Comparison of maximum constituent concentrations in cores with sediment-quality guidelines1
[TEC, threshold effect concentration; PEC, probable effect concentration; µg/kg, micrograms per kilogram; µg/g, micrograms per gram; --, not analyzed]
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Constituent
|
Site
|
|
Guideline1
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|
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|
HOW
|
HOE
|
HOS
|
|
TEC
|
PEC
|
|
|
|
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| Total PAH2 (µg/kg) |
800
|
600
|
840
|
1,610
|
22,800
|
|
| DDE (µg/kg) |
2.4
|
.4
|
2.5
|
3.16
|
31.3
|
|
| Arsenic (µg/g) |
7.9
|
13
|
11
|
9.79
|
33
|
|
| Chromium (µg/g) |
86
|
96
|
80
|
43.4
|
111
|
|
| Lead (µg/g) |
39
|
37
|
54
|
35.8
|
128
|
|
| Mercury (µg/g) |
--
|
.096
|
.12
|
.18
|
1.06
|
|
| Nickel (µg/g) |
30
|
25
|
30
|
22.7
|
48.6
|
|
| Zinc (µg/g) |
106
|
100
|
104
|
121
|
459
|
|
|
|
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1 MacDonald and others (2000).
2 Sum of 18 parent PAHs plus their alkyl-PAH homologues.