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AP® Environmental Science

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Moderate

Landfill Pollution Prevention

APES-K4LGXT

Which of the following is correct about pollution prevention methods as shown in the landfill diagram?

"Landfill Gas and Biogas." - Energy Explained, Your Guide To Understanding Energy. US Energy Information Administration, n.d. Web. 30 May 2016. http://www.eia.gov/energyexplained/?page=biomass_biogas.

A

Clay is used because it is permeable to water.

B

Leachate is the gaseous byproduct of decomposition.

C

Ground water monitoring is necessary to ensure that liquid byproducts of decomposition do not reach aquifers.

D

Methane gas is added to the landfill to increase the rate of decomposition.

E

A leachate treatment system treats the gases before releasing them into the atmosphere.