3 - Policies Regarding CONSERVATION of World Heritage Properties
3.3 - Impact assessments
Policy for the Integration of a Sustainable Development Perspective Into the Processes of the World Heritage Convention
9. "(…) appropriate balance, integration and harmonization between the protection of OUV and the pursuit of sustainable development objectives will include (…) provisions for the systematic assessment of environmental, social, and economic impacts of all proposed developments, as well as effective monitoring through continuity in data collection against agreed indicators."