1. A fault trenching program should be implemented to evaluate all suspect fault features.
  2. Relative age dating of soils and geomorphic features by a qualified soil and geomorphic stratigrapher may be necessary on a case by case basis depending upon the site conditions.
  3. Continuous faults that have insufficient soil cover to allow age assessment and are structurally associated with active fault regimes will be considered active. Correlation of these fault conditions between tracts may be performed on a case by case basis.
  4. Active faults identified by the consultant shall be located by a registered land surveyor and shown on the geologic or fault map which utilizes the final grading plan.

Nuisance Water Disposal: During the feasibility phase, tracts in impermeable soil/bedrock areas or high groundwater locations will be evaluated for effectiveness of drywell disposal of nuisance water. The feasibility of the nuisance water drywells will be substantiated by on-site percolation tests. The nuisance water evaluation will be in general conformance with the guidelines covered in Section V, Nuisance Water Management.

Large Landslides: Evaluation of large landslides will be performed in the feasibility phase of tracts in hillside (slopes steeper than 5:1) areas. Where landslides are present or suspected, sufficient subsurface exploration will be required to determine the basic geometry and stability of the landslide mass and the required stabilization measures. Gross stability studies and pseudostatic analyses must indicate calculated safety factors of at least 1.5 and 1.1 respectively.

B. DESIGN PHASE

After a project is considered feasible it should go to the geotechnical design phase. This phase requires a thorough geotechnical study for review. The design geotechnical study is based on the grading or construction plan to be used for earthwork or construction. A geotechnical report should be prepared that considers pertinent soils engineering, geologic and hydrogeologic conditions. It would present recommendations including but not necessarily limited to site grading criteria,

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