• The consultant should provide recommendations for control of erosion/surficial deterioration for graded slopes with low cohesion near surface soil or bedrock geologic structure.
  • Any geologic structure (i.e., bedding, joints, fault surfaces etc.) should be Utilized in the stability analyses.
  • Strengths utilized in the stability analyses should be derived from laboratory tests on the material that is considered for hypothetical failure.
  • Representative geologic cross section(s) shall be developed for all slopes that have geologic structure and are analyzed for slope stability.
  • Laboratory testing for shear strength should be performed on water saturated samples.
  • The geotechnical report shall discuss and present soils engineering parameters. The minimum guideline requirements for soils engineering studies are as follows:
  • Each site must have a soils engineering study.
  • Soils engineering studies shall be based on adequate and sufficient laboratory testing which should consist of; but not necessarily be limited to, soil compressibility; shear strength; dry density and optimum moisture content; and expansion potential.
  • The potential for soil collapse must be evaluated.
  • Subsurface explorations for the soils engineering report should be shown on a plan with a scale sufficient to describe their location (not necessarily a $1" = 40' scale).
  • Recommendations for soil removal, foundation design, retaining wall design, slope stability (deep and surficial), compaction requirements and any other pertinent soils condition should be presented.
  • Liquefaction potential should be considered where applicable.

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