sec_3_2_2__para__6

Regarding the calculation method, it should be noted that hazardous substance content values in waste as they have been determined, e.g. by sampling and chemical analysis of the waste under consideration, have to be compared against the concentration limits listed in Annex III of the WFD. These concentration limits refer to the state of the waste as it is when the classification of the waste is undertaken, i.e. the fresh weight of the waste. However, many analytical methods specify results on a dry weight basis. As a consequence, analytical values expressed on the basis of dry matter have to be corrected for the moisture content of the waste in order to determine the concentration of the substance in the original waste, as it will be subsequently managed. Waste classifiers should be aware that the laboratories often express results based on dry weight and should therefore be attentive to ensure that they are aware on what basis the analytical results are provided. Classification of waste has to be carried out on the basis of wet weights (either as originally tested or converted from the dry weight figures). Additionally, it should be noted explicitly that Article 7 (4) of the WFD does not allow a dilution or mixing of the waste to lower the initial concentrations of hazardous substances.

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Source: EUR-Lex (Cellar) · retrieved 2026-09-25 · Text as adopted (Official Journal); later amendments are not incorporated in this text.