Question

AP ENVIRONMENTAL SCIENCE

Which of the following is a barrier method of pollution prevention?

a. double clay liners

b. groundwater monitors

c. leachate collection and removal system

d. monitoring wells

Answer 1

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• a. Double clay liners ✅

Step-by-step explanation:

A double clay liner is a way to protect the environment from pollution in landfills. It uses two layers of clay material to stop harmful substances from escaping the landfill and spreading to nearby areas. These clay liners act as barriers, making sure that pollutants don't contaminate the groundwater or leak out as leachate. This method helps keep the environment clean and safe.

Answer 2

c. leachate collection and removal system

Step-by-step explanation:

A leachate collection and removal system is a barrier method of pollution prevention because it physically prevents the leaching of hazardous substances from a landfill into the surrounding environment.

The other options are not barrier methods of pollution prevention.

• Double clay liners are used to prevent the migration of hazardous substances from a landfill into the surrounding environment. However, they are not a physical barrier, so they are not considered a barrier method of pollution prevention.
• Groundwater monitors are used to detect the presence of hazardous substances in the groundwater. They do not prevent the leaching of hazardous substances from a landfill, so they are not considered a barrier method of pollution prevention.
• Monitoring wells are used to collect groundwater samples for analysis. They do not prevent the leaching of hazardous substances from a landfill, so they are not considered a barrier method of pollution prevention.

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