scope:

This standard specifies a methodology for the determination of the leaching behaviour of waste under specified conditions (i.e. for a specified scenario including a specified time frame) in order to provide a solution to a defined problem. This applies to disposal and recovery scenarios. The purpose of this standard is to provide a methodology for the determination of the leaching behaviour of a waste under specified conditions i.e. in a disposal or recovery scenario within a specified time frame. The methodology is designed to ensure that waste specific properties and scenario conditions are taken into account. The methodology contains several steps, some of which make use of chemical, biological, physical and leaching tests. A selection of tests is made depending on the objective, that is the definition of the problem and the solution sought, the waste under consideration and the scenario to be evaluated. It is recognised that based on the present state of knowledge it is not always possible to provide a clear solution. Determination of leaching behaviour in the context of this methodology may provide information with relatively large uncertainties. To avoid unnecessary duplication of work, reference can be made to existing documented information on specific waste characteristics and on previous evaluations of existing documented scenarios, provided that such reference is documented and justified in the study report for each step of the methodology to which it applies.