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The concept in this paper builds upon basic principles of sustainability to address the problem of how a sustainable project must contribute to economic and social welfare without depleting natural resources, destroying the environment or harming human health.. With this understanding, a systems approach was used in a study that conceptualised a paradigm shift in project management system for sustainability incorporating Environmental Impact Assessment (EIA), Cause-effect Chain and the Socio-economic Resource models. Using a multi evidence research methodology of four project case studies in Tanzania, sustainability of the project was assessed at different phases of project life cycle. The paper presents a conceptual framework that integrates concepts of sustainability and project life cycle assessment to assess the sustainability of projects using indicators.
