SECTION III

GEOTECHNICAL REPORTS

A. FEASIBILITY EVALUATION

All properties shall be evaluated for feasibility. For that evaluation a site plan showing the location and dimensions of the property is necessary. The site plan should be of sufficient detail to outline existing topography and proposed grading. It is not necessary to provide information on existing topography in flatland areas (less than 4 percent surface relief). Excavations for slopes, basements, etc. should be identified on the Feasibility map.

A detailed Feasibility evaluation should be performed for properties with flaws that would affect the design process; i.e., necessitate design around a defect. Adverse conditions could be active faults, nuisance water disposal and large preexisting landslides. Since these conditions entail different geotechnical investigation techniques they are considered as separate issues in the following text. A project may have more than one adverse condition and the analysis would be a combination of the following:

• Active Fault Potential: Prior to the design phase, a fault study must be prepared on properties within an Alquist-Priolo Special Studies Zone and those outside that zone which may be affected by the trace of an active fault. The fault study should be along the following outline:
• A photo lineament study should be performed. A map should be prepared that shows all possible lineaments. Scale of the map will be dependent upon size of the property and detail and expression of the lineaments.
• The consultant is encouraged to discuss the findings of the photo-lineament analysis with the reviewer.
• Any Alquist-Priolo Special Studies Zones limits shall be shown on a base map with a minimum I" = 2,000' scale.

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