To determine the operational depth of a sanitary landfill, which factor must be assessed?

The operational depth of a sanitary landfill is significantly influenced by the location of bedrock. Understanding the depth at which bedrock is situated is critical for several reasons. Bedrock can serve as a natural barrier that prevents leachate, or pollutants, from percolating into the groundwater, thus protecting the surrounding environment. Additionally, the depth of bedrock affects the design and engineering of the landfill, particularly regarding how deep waste can be placed while ensuring stability and preventing deformation over time. Therefore, assessing the location of bedrock is essential for determining the safest and most effective operational depth of the landfill.

While factors like proximity to urban areas, type of waste to be disposed, and cost of land play important roles in the overall planning and development of a landfill, they are secondary to the fundamental geological considerations presented by the location of bedrock.