Which of the following is NOT a step in landfill creation?

• A. Liner
• B. Combustion
• C. Waste layers
• D. Cap and monitor

Answer: (B)

This question tests what steps are involved in constructing a modern landfill. A liner is essential because it prevents leachate from seeping into soil and groundwater, providing the primary containment at the bottom of the site. Creating waste layers is about how the trash is deposited and compacted to form stable, structured cells with controlled waste placement and gradual settlement. Cap and monitor refers to placing a final cover when the landfill is closed and continuing monitoring for leaks and gas emissions, ensuring long-term protection of the environment. Combustion, on the other hand, is a waste treatment method that burns waste to reduce volume, not a construction step used to build a landfill. While methane from decomposing waste may be burned later as part of gas management, that activity is a post-creation operation, not part of the landfill’s initial construction.