Aspect	Reference to section in the model documentation or assessment report
1. Problem definition
2. Supporting data
3. Conceptual model[Link]
4. Formal model1
5. Computer model2
6. Regulatory model – the environmental scenario3
7. Regulatory model – parameter estimation
8. Regulatory model – Sensitivity and uncertainty analysis
9. Regulatory model – Comparison with measurements
10. Reality/problem – Model use

¹ For GUTS models it is sufficient to identify which version of GUTS has been used and to refer to this Scientific Opinion. This can be done since the conceptual and formal models are standardised following Jager and Ashauer (2018).

² If standard software implementations become available (and have been checked) it will be sufficient to identify which software and version was used.

³ For GUTS models, if output from FOCUS surface water standard software has been used, it is sufficient to document which FOCUS model versions and scenarios have been used.