Determining the type of Impact Assessment needed
Where a proposed action has the potential to affect a
’s Outstanding Universal Value and other heritage/conservation values, either alone or jointly with other actions (‘cumulative impact’), then an assessment of the action’s effects on the OUV and other values should be carried out before the action can go ahead. It is the shared responsibility of the
, site management and relevant consent authorities of the State Party to ensure that the appropriate form of impact assessment is carried out, normally paid for by the project proponent.
World Heritage management authorities must understand the applicable impact assessment legislation and system of operation within their jurisdiction,11 so that the right form of impact assessment is carried out. If a formal assessment of the proposed action’s impacts on the heritage would already be required as part of local/national frameworks or donor requirements, then the assessment of OUV can and should be integrated into this wider impact assessment (see Section 5). Alternatively, for countries where impact assessment is not required, or where the action would not come under existing impact assessment requirements, a stand-alone assessment of impacts on OUV and other heritage/conservation values should be carried out (see Section 6). Figure 4.4 summarizes the process of determining what kind of impact assessment is needed.
Figure 4.4. Indicative flowchart for determining the type of impact assessment needed for actions potentially affecting World
properties.