Which disposal method is described as sanitary landfilling?

• A. Sanitary landfilling
• B. Open dumping
• C. Ocean dumping
• D. Incineration

Answer: (A)

Sanitary landfilling is a controlled waste disposal method that places waste in engineered, lined cells with systems to manage leachate and gas, plus daily cover to limit contact with the environment. The key idea is to isolate waste from soil and groundwater and to reduce odors, pests, and vectors, using liners, leachate collection, gas extraction, and monitoring. This combination of engineering controls and daily covering is what defines sanitary landfilling.

Open dumping lacks these engineered controls and environmental protections. Ocean dumping releases waste directly into waterways, causing marine pollution. Incineration involves burning waste rather than burying it, so it isn’t a landfilling method.