Table 6.1        Baseline Sediment Quality at Sok Kwu Wan

 

Contaminants (mg kg-1)

EPD Marine Sediment Monitoring Data in 1991

Sediment Quality Data from the Lantau Port & Western Harbour Development Studya

Lower Chemical Exceedance Level (LCEL)

Upper Chemical Exceedance Level (UCEL)

Cadmium (Cd)

9.1b

< 0.5

1.5

4

Chromium (Cr)

42

27

80

160

Copper (Cu)

56

72

65

110

Mercury (Hg)

0.06

0.57c

0.5

1

Nickel (Ni)

20

24

40

40

Lead (Pb)

73

59

75

110

Zinc (Zn)

120

136

200

270

a              The data presented are averages of the marine sediment data taken in the period of November 1991 and December 1992

b              > UCEL

c              > LCEL & < UCEL