Which factor contributes least to landfill site selection?

The factor that contributes least to landfill site selection is local wildlife.

In the context of selecting a landfill site, critical considerations generally involve aspects that can significantly impact the environment, human health, and the feasibility of maintaining the landfill operation. Soil type, for example, plays a vital role because it determines the landfill's ability to contain leachate and prevent groundwater contamination. Proximity to urban areas is also crucial, as it influences transportation costs and accessibility, along with potential public opposition from nearby residents. Average rainfall is a significant factor since it impacts the moisture level in the landfill, which can affect leachate production and the overall effectiveness of the containment measures.

While local wildlife may need to be considered from an ecological standpoint, it typically has less direct influence on the technical and logistical factors that are prioritized when selecting a landfill location. The primary focus is ensuring structural integrity, environmental protection, and operational practicality, areas where wildlife considerations might not have as prominent an impact. Therefore, among the options presented, local wildlife is the factor that contributes least to the selection process for landfill sites.