Which statement about final cover is true?

Which statement about final cover is true?

• A. To minimize infiltration of rainwater and the production of Leachate.
• B. To speed up decomposition.
• C. To separate windrows.
• D. To improve odor.

Answer: (A)

The main idea is that the final cover is designed to limit water getting into the waste so leachate production is reduced. By using low-permeability materials (like compacted soil, clay, or synthetic barriers) and a drainage layer, plus vegetation to stabilize the surface, rainwater is slowed or redirected, which lowers the amount of leachate that must be collected and treated. It also helps with erosion control and long-term stability of the closed site. This is not about speeding up decomposition, which happens during active waste management, nor about separating windrows or primarily improving odor—those can be secondary considerations, but the central purpose of the final cover is to minimize rainwater infiltration and leachate generation.

The main idea is that the final cover is designed to limit water getting into the waste so leachate production is reduced. By using low-permeability materials (like compacted soil, clay, or synthetic barriers) and a drainage layer, plus vegetation to stabilize the surface, rainwater is slowed or redirected, which lowers the amount of leachate that must be collected and treated. It also helps with erosion control and long-term stability of the closed site. This is not about speeding up decomposition, which happens during active waste management, nor about separating windrows or primarily improving odor—those can be secondary considerations, but the central purpose of the final cover is to minimize rainwater infiltration and leachate generation.