Guidelines on remediation of contaminated sites

Appendix 6.1
Calculated zero values for selected substances

Zero values are defined as calculated soil concentrations which correspond to soil-water concentrations may not exceed groundwater-quality criteria.

The calculations must be carried out in accordance with the principle of fugacity, as stated in Appendices 5.3 and 5.9.

Table 1 features calculated zero values for loam, sandy loam, clay, and sand (with soil parameters as stated in Appendix 5.3 – Table 1).

The zero values calculated are significantly below the soil quality criteria.

Table 1.
Calculated zero values for selected substances.

Soil parameters

Loam

Sandy loam

Clay

Sand

Volumetric proportion (%)

 

 

 

 

- soil

60

55

60

55

- air

10

10

10

30

- water

30

35

30

15

- organic matter

1.0

2.0

0.1

0.2

Particle density (kg/l)

2.65

2.6

2.7

2.65

Soil density (kg/l)

1.7

1.6

1.8

1.7

Contaminant

Zero values (m g/kg)

Benzene

0.4

1.2

1.9

0.2

o-xylene

21

109

5.0

13

m-xylene

59

96

7.7

11

p-xylene

61

114

9.1

13

Naphthalene

253

477

33

50

Dichloromethane

1.7

2.2

1.4

0.9

Trichloromethane

2.3

3.6

1.3

0.1

Tetrachloromethane

0.8

1.4

0.3

0.4

1,1-dichloroethane

1.1

1.7

0.8

0.6

1,2-dichloroethane

4.6

6.4

3.6

2.2

1,1,1-trichloroethane

1.1

1.8

0.4

0.4

Chloroethylene

0.02

0.03

0.02

0.04

1,1-dichloroethylene

0.5

0.7

0.3

0.3

Trichloroethylene

2.1

3.6

0.7

0.7

Tetrachloroethylene

2.3

4.2

0.5

0.7