Q.Describe a sanitary landfill as a method of solid waste disposal. Mention two problems associated with poorly managed, open dumping sites.

A sanitary landfill is an engineered method of solid waste disposal in which waste is deposited in compacted layers at a carefully constructed site, with an impermeable lining placed beneath the waste to prevent contaminated liquid (leachate) from seeping into groundwater, and a layer of soil added over the waste each day to control odour, pests and the escape of gas. This is very different from uncontrolled, open dumping, where waste is simply left exposed with no lining and no covering. Open dumping causes serious problems: leachate seeps freely into groundwater and nearby water bodies, contaminating them; the exposed waste attracts disease-carrying rodents, flies and stray animals, creating a direct public health hazard; and uncontrolled decomposition releases metha …

Contrast the two directly: name the two engineering features of a sanitary landfill (lining + daily cover) and then name at least two specific hazards of open dump …

Do not describe a landfill and an open dumping site as basically the same thing with different names -- the whole point of a sanitary landfill is the engineer …