Table 4.1 Mean WHO (1998) TEQ (ng/g) concentrations in soil for various locations/ scale of use

Site 6

0.05

0.001

0.004

0.005

0.09

0.001

0.14

0.03

Site 11

0.23

0.004

1.6

1.0

2.2

Site 14

0.14

4.3

0.08

0.01

0.03

0.003

Site 16

0.01

0.13

0.005

0.002

0.02

0.01

0.03

0.01

Site 17

0.005

2.2

0.005

0.005

0.1

0.02

Range

0.14 –0.23

0.004 –4.3

0.005 – 1.6

0.01 – 2.2

0.005 – 2.2

0.001 – 0.03

-

-

Arithmetic mean

0.18

2.15

0.46

0.56

0.33

0.008

-

-

Arithmetic mean

1.17

0.49

0.17

-

Geometric mean

-

-

0.28

0.27

0.31

0.09

-

-

Geometric mean

-

0.27

0.17

-

Site 1

32.4

23.1

11.6

19.9

0.4

0.5

7.5

5.6

1.6

0.3

2.2

2.0

8.0

Site 2

0.1

0.2

0.2

0.2

5.9

0.1

10.0

10.3

0.2

Site3(1)

2.3

0.2

0.5

0.001

0.0005

0.005

Site3(2)

1.7

0.2

0.2

19.6

14.6

0.1

3.4

Site 5

6.0

0.8

1.0

4.3

2.8

0.4

2.0

4.1

Site 8

9.6

1.9

0.3

1.3

0.3

0.4

Site 13

6.2

4.1

12.0

9.5

11.8

4.9

Site 15

26.7

6.5

16.7

19.7

3.5

1.4

Range

0.1 – 32

0.0005 – 23.1

0.2 – 11.6

0.2 – 19.9

0.3 – 26.7

0.1 – 19.7

-

-

Arithmetic mean

5.15

6.2

4.85

7.42

6.38

3.45

-

-

Arithmetic mean

5.61

6.14

4.91

-

Geometric mean

0.69

0.90

1.43

1.52

1.52

1.23

-

-

Geometric mean

0.77

1.48

1.36

-

Site 7

4.9

275

3.3

0.4

0.02

0.06

5.8

20.6

0.2

18.3

Site 9

16.4

3.1

0.2

0.1

0.5

0.1

6.0

1.3

8.1

1.1

Site 10

69.9

2.7

123

3.4

3.6

0.03

39.5

1.9

6.4

11.2

Range

4.9 – 69.9

1.9 – 275

0.02 – 123

0.06 – 20.6

-

-

3.6 –16.4

0.03 – 11.2

Arithmetic mean

32.68

70.67

16.346

5.05

-

-

5.00

5.62

Arithmetic mean

51.67

10.69

-

5.31

Geometric mean

3.81

2.48

1.18

0.96

-

-

1.98

0.79

Geometric mean

3.07

1.06

-

1.25