Over the past decades, India's municipal solid waste has predominantly been dumped in poorly managed landfills, posing significant environmental and health hazards. Bio-mining emerges as a better solution, offering the potential to reclaim these sites while recovering valuable resources, including materials and energy. A key component recovered during landfill mining is the landfill good earth fraction, which requires proper management to maximize resource recovery. This study focuses on assessing the legacy waste composition and the physicochemical and geotechnical characteristics of the good earth fraction, a soil-like material having size < 6 mm. It was observed that the good earth is comparable to poorly-graded sand with gravel, but organic matter’s presence introduces cohesion and compressibility. Geotechnical evaluations indicate that the material exhibits moderate moisture content, non-plastic nature, and a specific gravity, suggesting a low shrink-swell potential. This stability makes it suitable for use in filling low-lying areas without significant volume changes due to moisture variations with a maximum dry density of 1.4 g/cc and an optimum moisture content of 25.13%. The study concludes that the good earth fraction, using stabilization or not, can be effectively utilized as a fill material in several applications, including embankments, reinforced walls, subgrade improvement, and structural fill for low to moderate loads. The research underscores the importance of assessing or pre-treating the material due to potential heavy metal contamination, but highlights the environmental and infrastructural benefits of utilizing the good earth fraction in sustainable development efforts.