NBN EN 12920 : 2006 + A1 2008

Foreword
Introduction
1 Scope
2 Terms and definitions
3 Description of the steps in the methodology
   3.1 Outline
   3.2 Step 1: Definition of the problem and the solution sought
   3.3 Step 2: Description of the scenario
   3.4 Step 3: Description of the waste
   3.5 Step 4: Determination of the influence of parameters on
        leaching behaviour within the specified time frame
   3.6 Step 5: Modelling of leaching behaviour within the
        specified time frame
   3.7 Step 6: Behavioural Model Validation
        3.7.1 General
        3.7.2 Verification of the consistency between parameter
                specific tests and simulation tests
        3.7.3 Verification of predicted behaviour in the field
        3.7.4 Identification of analogy with geological natural
                and/or ancient materials
   3.8 Step 7: Conclusion
4 Study report
Annex A (informative) Principle of the methodology
Bibliography

Defines 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. It applies to disposal and recovery scenarios.