Risk assessment – encapsulation of both the built and natural environments

Although various risk assessment approaches have been adopted for landfill waste disposal sites, there are still wide-ranging knowledge gaps and limitations which need addressing by developing a holistic risk assessment methodology. This paper conceptually presents only a framework of such a risk analysis methodology for landfill leachate in a holistic format, thereby attempting to bridge these knowledge gaps. The conceptual framework or structure does not only draw together various sections and sub-sections of holistic risk assessment in one place but also categorizes and arranges them in a logical sequence. The holistic structure is to assist in performing the process of a risk analysis from start to end. Also, in order to place Risk Assessment (RA) in a broader perspective of the decision-making process, relationships between Risk Management (RM), Hazard Assessment (HA), and Risk Estimation (R Esti) are also presented. Although this paper attempts to cover the whole of the risk analysis methodology in the form of a fundamental framework, the study does not engage in in-depth detail of sections and sub-sections of the methodology due to brevity.