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y

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(b)

If planners do not assume that all of the excavated soil comes from the landfill excavation, then their solution must incorporate the annual in-place waste and soil volume, the excavated landfill volume, the aboveground landfill volume, and the cover-soil-to-waste ratio. Excavation side slopes are often assumed to be 1:1 but may be more gradual. Excavation bottom slopes are slight and can be assumed level for the purpose of initial size estimates.

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