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(Art. 9 and 10)
1In assessing the impact of polluted sites on waters, the concentration values in the following table apply. Where no concentration values are given in the table for potential water pollutants which are polluting a site, the authority shall specify a value on a case by case basis with the consent of the FOEN and according to the provisions of the legislation on waters protection.
2Where the assessment is based on the eluate of the material of the site, the following requirements apply to sampling, preparation of the eluates and their analysis:
3For sites with particularly heterogeneous pollution (e.g. waste disposal sites), if samples can be obtained from the seepage water, these may be regarded as equivalent to an eluate.
4In assessing the impact of volatile substances1, the seepage water shall be regarded as equivalent to an eluate. If it is not possible to take samples of the seepage water, pollutant concentrations shall be calculated based on measurements of interstitial airconcentration.
5An eluate test in accordance with paragraph 2 may be dispensed with if the pollutant concentration in the eluate of the material is assessable (i.e. to be above or below the concentration values) on the basis of other information, for example composition and origin of the material at the site, lumped parameters or ecotoxicological investigations, or can be calculated from total content.
6The FOEN shall issue guidelines on sampling, preparation of eluates and their analysis, and on assessment of the impact of volatile substances.
| Substance | Concentration value |
|---|---|
| Inorganic substances | |
| Antimony | 0.01 mg Sb/l |
| Arsenic | 0.01 mg As/l |
| Lead | 0.05 mg Pb/l |
| Cadmium | 0.005 mg Cd/l |
| Chromium (VI) | 0.02 mg CrVI/l |
| Cobalt | 2 mg Co/l |
| Copper | 1.5 mg Cu/l |
| Nickel | 0.7 mg Ni/l |
| Mercury | 0.001 mg Hg/l |
| Silver | 0.1 mg Ag/l |
| Zinc | 5 mg Zn/l |
| Tin | 20 mg Sn/l |
| Ammonium** | 0.5 mg NH |
| Cyanide (free) | 0.05 mg CN-/l |
| Fluoride | 1.5 mg F-/l |
| Nitrite** | 0.1 mg NO |
| Organic substances | |
| Aliphatic hydrocarbons: | |
| – Total (C | 2 mg/l |
| – Methyl tert-butyl ether (MTBE) | 0.2 mg/l |
| Amines | |
| – Aniline | 0.05 mg/l |
| – 4-aniline chloride | 0.1 mg/l |
| Halogenated hydrocarbons | |
| – 1,2-Dibromoethane (EDB) | 0.05 μg/la |
| – 1,1-Dichloroethene* | 2 mg/l |
| – 1,2-Dichloroethane (EDC)* | 0.003 mg/l |
| – 1,1-Dichloroethene* | 0.03 mg/l |
| – 1,2-Dichloroethene (cis and trans)* | 0.05 mg/l |
| – Dichloromethane (methylene chloride, DCM)* | 0.2 mg/l |
| – 1,2-Dichloropropane* | 0.005 mg/l |
| – 1,1,2,2-Tetrachloroethane | 0.001 mg/l |
| – Tetrachloroethene (PERC) | 0.04 mg/l |
| – Tetrachloromethane (carbon tetrachloride)* | 0.002 mg/l |
| – 1,1,1-Trichloroethane* | 2 mg/l |
| – Trichloroethene (TCE)* | 0.01 mg/l |
| – Trichloromethane (chloroform)* | 0.04 mg/l |
| – Vinyl chloride* | 0.5 μg/l |
| – Chlorobenzene | 0.7 mg/l |
| – 1,2-Dichlorobenzene | 3 mg/l |
| – 1,3-Dichlorobenzene | 3 mg/l |
| – 1,4-Dichlorobenzene | 0.01 mg/l |
| – 1,2,4-Trichlorobenzene | 0.4 mg/l |
| – Polychlorinated biphenyls (PCBs)b | 0.1 μg/l |
| Monocyclic aromatic hydrocarbons (BTEX) | |
| – Benzene* | 0.01 mg/l |
| – Toluene | 7 mg/l |
| – Ethylbenzene | 0.8 mg/l |
| – Xylenes | 10 mg/l |
| Nitro compounds | |
| – 2,4-Dinitrophenol | 0.05 mg/l |
| – Dinitrotoluene | 0.5 μg/l |
| – Nitrobenzene | 0.01 mg/l |
| – 4-Nitrophenol | 2 mg/l |
| Phenols | |
| – 2-Chlorophenol | 0.2 mg/l |
| – 2,4-Dichlorophenol | 0.1 mg/l |
| – 2-Methylphenol (o-cresol) | 2 mg/l |
| – 3-Methylphenol (m-cresol) | 2 mg/l |
| – 4-Methylphenol (p-cresol) | 0.2 mg/l |
| – Pentachlorophenol (PCP) | 0.001 mg/l |
| – Phenol (C | 10 mg/l |
| Polycyclic aromatic hydrocarbons (PAK) | |
| – Acenaphthene | 2 mg/l |
| – Anthracene | 10 mg/lc |
| – Benz[a]anthracene | 4 μg/l |
| – Benzo[b]fluoranthene | 4 μg/l |
| – Benzo[k]fluoranthene | 0.04 mg/l |
| – Benzo[a]pyrene | 0.4 μg/l |
| – Chrysene | 0.4 mg/l |
| – Dibenz[a,h]anthracene | 0.4 μg/l |
| – Fluoranthene | 1 mg/l3 |
| – Fluorene | 1 mg/l |
| – Indeno[1,2,3-cd]pyrene | 4μg/l3 |
| – Naphthalene | 1 mg/l |
| – Pyrene | 1 mg/l3 |
| a Detection threshold | |
| b PCB: the sum of the 6 congeners 28, 52, 101, 138, 153 and 180 multiplied by the factor 4.3 must not exceed the concentration value. | |
| c Not normally detectable in the eluate at these concentrations. | |
| * To be assessed according to Paragraph 4. | |
| ** Applies to surface waters only |
Indicated in the table by *. ↩
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