2 Methods of waste disposal Frequently, these dumps were in wetlands adjacent to a river or lake. To minimize the volume of the waste, the dump was often burned Unfortunately, this method is still being used in remote or sparsely populated areas in the world Jinan University2 Methods of waste disposal ◼ Frequently, these dumps were in wetlands adjacent to a river or lake. To minimize the volume of the waste, the dump was often burned. Unfortunately, this method is still being used in remote or sparsely populated areas in the world