Tham khảo tài liệu 'triple bottom line risk management_8', kinh doanh - tiếp thị, quản trị kinh doanh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 214 Financial Assurances Waste Management Australia because the predominant source of uncertainty lay within the cost estimates themselves. This level of uncertainty was handled using probabilistic techniques. The amount required for Corrective Action Financial Assurance was not as straightforward because uncertainty exists not only with cost but also with the occurrence of events and severity of impacts. The method used here was developed specifically to account for all aspects of uncertainty to derive a reasonable estimate of such risk cost. For the Boral Western Landfill site those risk events that comprised 95 percent of the total risk over the project life were defined as the riskiest events and were assumed to occur to determine the Corrective Action Financial Assurance component value. Risk Identification and Analysis The expert panel process was used to identify and describe all of the potential activities and risk events related to the proposed Boral Western Landfill and to derive a comprehensive list of cost items. Consideration of uncertainty and risk events was carried out by a relatively small group of experts five with expertise in environmental and design engineering statutory planning the law site operation and the corporate perspective. Modeling followed the threshold method. Analysis Results Closure Financial Assurance The panel considered that the activities associated with closure would comprise Management and administration . management time works supervision Trimming of waste and general earthworks around the site Landfill capping with 2 ft m of clay and the same depth of topsoil Construction operation and monitoring of a gas collection system Revegetation of the landfill surface through the application of fertilizer grass and plants Revegetation of the roads and hardstand areas through the application of fertilizer grass and plants Disassembly and removal where appropriate of site facilities and services Site clean-up Table shows