For the geotechnical properties and characteristics of sedimentary formations, groundwater assessment of sedimentary formation and basement complex as well as pressure load variation and expansion characteristics of palm kernel shell stabilized sedimentary formation were presented and extensively discussed. Consolidation parameters and settlement potentials as well as hydraulic conductivity and permeability characteristics of palm kernel shell stabilized sedimentary formation were equally presented discussed. California bearing-ratio characteristics and compaction characteristics of palm kernel shell stabilized sedimentary formation were also presented and discussed. Pressure load variation and void ratio characteristics as well as consolidation parameters and settlement potentials of plastic pellet stabilized sedimentary formation were equally presented and discussed. Hydraulic conductivity and permeability potentials as well as California bearing-ratio characteristics of plastic pellet stabilized sedimentary formation were also presented. Finally the compaction characteristics of plastic pellet, cement, fly ash and eggshell stabilized sedimentary formation of part were equally presented. All these results would serve as guidelines for numerical analysis using any of the geotechnical simulation and numerical tools for static and seismic design of underground structures by researchers and practicing engineers.