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DUTCH INTERVENTION VALUES

IN STANDARD SOIL & GROUNDWATER
mg/kg dry matter & micrograms / litre
(unless stated)

d = detection limit

 
 

Soil mg/kg dry matter

Water Fg/l
Compound

Target
Value

Intervention
Value

Target
Value

Intervention
Value
I Metals
(* note soil type correction formula)

arsenic
barium
cadmium
chromium
cobalt
copper
mercury
lead
molybdenum
nickel
zinc




29
200
0.8
100
20
36
0.3
85
10
35
140




55
625
12
380
240
190
10
530
200
210
720




10
50
0.4
1
20
15
0.05
15
5
15
65




60
625
6
30
100
75
0.3
75
300
75
800
II Inorganic Compounds

cyanides - free
cyanides - complex (pH<5)
cyanides - complex (pH$5)
thiocyanates



1
5
5



20
650
50
20



5
10
10



1500
1500
1500
1500
III Aromatic Compounds
(** note soil type correction formula)

benzene
catechol
cresols
ethyl benzene
hydroquinone
phenol
resorcinol
toluene
xylenes




0.05 d


0.05 d

0.05 d

0.05 d
0.05 d




1
20
5
50
10
40
10
130
25




0.2
d
d
0.2

0.2

0.2
0.2




30
1250
200
150
800
2000
600
1000
70
IV Polycyclic Aromatic Hydrocarbons
(** note soil type correction formula)

PAH (sum of 10) (see notes 2 and 11)

anthracene
benzo(a)anthracene
benzo(a)pyrene
benzo(ghi)perylene
benzo(k)flouranthene
chrysene
fluoranthene
indeno(1,2,3 -cd)pyrene
naphthalene
phenanthrene




1




40




-

0.02
0.002
0.001
0.0002
0.001
0.002
0.005
0.0004
0.1
0.02




-

5
0.5
0.05
0.05
0.05
0.05
1
0.05
70
5
V Chlorinated Hydrocarbons
(** note soil type correction formula)

chlorobenzenes (sum) (notes 3, 11)

monochlorobenzene
dichlorobenzene
trichlorobenzene
tetrachlorobenzene
pentachlorobenzene
hexachlorobenzene

chloronapthalene

chlorophenols (sum) (notes 4,11)

monochlorophenols (sum)
dichlorophenols (sum)
trichlorophenols (sum
tetrachlorophenols (sum)
pentachlorophenols (sum)

1,2-dichloroethane
dichloromethane

polychlorinated biphenyls (sum) (note 5)

tetrachloroethene
tetrachloromethane
trichloroethene
trichloromethane
vinyl chloride




-

d
0.01
0.01
0.01
0.0025
0.0025

-

-

0.0025
0.003
0.001
0.001
0.002

-
d

0.02

0.01
0.001
0.001
0.001
-




30

-
-
-
-
-
-

10

10

-
-
-
-
5

4
20

1

4
1
60
10
0.1




-

0.01 d
0.01 d
0.01 d
0.01 d
0.01 d
0.01 d

-

-

0.25
0.08
0.025
0.01
0.02

0.01 d
0.01 d

0.01 d

0.01 d
0.01 d
0.01 d
0.01 d
-




-

180
50
10
2.5
1
0.5

6

-

100
30
10
10
3

400
1000

0.01

40
10
500
400
0.7
VI Pesticides
(** note soil type correction formula)

aldrin
atrazine
carbaryl
carbofuran
DDT/DDE/DDT
dieldrin
drins (see note 7)
endrin
HCH-compounds (see note 8)
- alpha
- beta
- gamma (lindane)
maneb




0.0025
0.05Fg/kg
-
-
0.0025
0.0005
-
0.001
-
0.0025
0.001
0.005Fg/kg
-




-
6
5
2
4
-
4
-
2
-
-
-
35




d
0.0075
0.01 d
0.01 d
d
0.02 ng/l
-
d
-
d
d
0.2 ng/l
d




-
150
0.1
0.1
0.01
-
0.1
-
1
-
-
-
0.1
VII Miscellaneous
(** note soil type correction formula)

cyclohexanone
mineral oil (see note 10)
pthalates (sum) (see note 9)
pyridine
styrene
sulpholane
tetrahydrofuran




0.1
50
0.1
0.1
0.1
0.1
0.1




270
5000
60
1
100
90
0.4




0.5
50
0.5
0.5
0.5
0.5
0.5




15000
600
5
3
300
30
1

Notes:

1. Acidity: pH (0.01 M CaCl2). For the determination of pH higher or equal to 5 and pH lower than 5 the 90th percentile of the measured values is taken.

2. For PAH (sum of 10 compounds), read: the sum of anthracene, benzo(a)anthracene, benzo(k)flouranthene, benzo(a)pyrene, chrysene, phenanthrene, fluoranthene, indeno(1,2,3 -cd)pyrene, naphthalene, benzo(ghi)perylene.

3. For chlorobenzenes (sum) read the total content of chlorobenzenes (mono-, di-, tri-, tetra-, penta- and hexachlorobenzene).

4. For chlorophenols (sum) read the total content of chlorophenols (mono-, di-, tri-, tetra- and pentachlorophenol).

5. The intervention value for polychlorinated biphenyls (sum) is the total of PCB 28, 52, 101, 118, 138, 153, 180. For the target value PCB 118 is excluded.

6. For DDT/DDE/DDD, read: the sum of DDT, DDE and DDD.

7. For drins, read: the sum of aldrin, dieldrin and endrin.

8. For HCH-compounds, read: the sum of alpha-HCH, beta-HCH, gama-HCH and delta-HCH.

9. For phthalates (sum), read: the sum of all phthalates.

10. Mineral oil includes the sum of all alkanes. Where mixtures (eg petrol, diesel or lubricating oil) exist, the content of aromatic compounds and polycyclic hydrocarbons will also have to be determined. For practical reasons this cumulative parameter is considered to give sufficient information. Further toxicological and chemical differentiation is being studied.

11. The cumulative value for polycyclic aromatic hydrocarbons, chlorophenols and chlorobebzenes, in soil, is valid only for the total concentration of compounds within each group. If contamination is caused by only one of the compounds, the cumulative value becomes the intervention value for this one compound. Where two or more compounds are present, the sum of their concentrations is compared to the cumulative value of PAH (sum).

For soil / sediment the effects can be added up (ie the effect of 1 mg of compound A is equal that of 1 mg of compound B) and can be compared to the cumulative value by adding up the concentrations of the relative compounds. For groundwater the effects can be added indirectly, as a fraction of the individual intervention value (ie 0.5 of the intervention value compound A has the same effect as 0.5 of the intervention value compound B). As a consequence, an accumulative formula is needed to judge whether or not the intervention value is exceeded. The latter is the case for a group of compounds in groundwater if:

Where:
conc = measured concentration of compound from the relevant group
Ii = intervention value of the compound concerned

ADJUSTMENTS TO VALUES FOR DIFFERENT SOIL TYPES

Target and intervention values vary according to the clay and organic matter content of the soil. The following formula is used to calculate these values for heavy metals (including arsenic):

*


Where:
Ib = intervention value for the relevant soil in mg/kg
Ist = intervention value for the standard soil in mg/kg
% clay = measured % clay in the relevant soil, minimum 2%
% organic = measured % of organic matter in the relevant soil, with a minimum 2% and maximum 30%
ABC = compound dependant constants (see table below)


**
The following formula is used to calculate these values for organic compounds:



Where:
Ib = intervention value for the relevant soil in mg/kg
Ist = intervention value for the standard soil in mg/kg
% organic = measured % of organic matter in the relevant soil, with a minimum 2% and maximum 30%

Table of compound dependent constants

 

A

B

C
Arsenic

Barium

Cadmium

Chromium

Cobalt

Copper

Mercury

Lead

Molybdenum

Nickel

Zinc

15

30

0.4

50

2

15

0.2

50

1

10

50

0.4

5

0.007

2

0.28

0.6

0.0034

1

0

1

3

0.4

0

0.021

0

0

0.6

0.0017

1

0

0

1.5

Click here for ICRCL tables
Click here for Kelly tables
 
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