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The problems associated with the ash disposed at ash pond and mounds is gaining considerable attention. The leachates from improperly located, designed and inadequately lined waste disposal ponds and landfills are causing a greater contamination, as impurities percolate to ground water as well as surface water. This paper reviews the lining of ash pond to prevent any contamination of ground water and surface water flow, using Geosynthetic material with adequate sub-surface drainage facilities and proper leachate collection mechanisms.