Prioritisation of works What is the preferred method for each site? In what order should
works be undertaken?
Multi-criteria analysis
Cost-benefit analysis alone may not be sufficient to select the most
appropriate technique for each site, or to prioritise several proposed
remediation sites. Additional criteria may be needed to describe
non-economic characteristics. Once these criteria have been identified
a system of scoring should be developed to allocate ‘decision
weights’ that reflect the importance of the criteria.
Consistent application of scored assessments is important to ensure
a useful result. Although multi-criteria analysis lends itself to
inclusion of more criteria than cost-benefit analysis, there is greater
risk of poor evaluation due to subjective assessment.
Criteria must avoid incorporation of values already captured as part
of a cost-benefit analysis and methods of calculation (net present
value or the benefit-cost ratio) should be consistent.
The default information provided in Multi-Criteria Analysis page
of the Decision Support Tool should be considered a guide only, and
be reviewed by personnel with
relevant experience before conducting site evaluation.
Download the Channel Seepage Decision Support
Tool:
Cost_Calculator_V08_June2004.xls