3. the terrain is a factor in some landfill wetland should not be selected. Areas with wetlands or flood in Mae Salong in waste disposal sources is not flooding, because space is the.4. the surrounding environment by waste disposal sources should stay away from the pond, drinking water or tap water plants in the present period of not less than 700 meters, conditions of waste disposal sources at Mae Salong in far away from water sources and not near a source of water and municipal waste disposal should stay away from natural water bodies or wetlands is not less than 300 meters, except the source is located. In landfills, waste disposal sources to appreciate station of Mae Salong in isn't adjacent to natural water sources, and is an area where geological conditions, or under the ground, stable manner. Strong enough to support waste
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