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Tim Lewis Communities 6103.200.000 <br />Spotorno Property January 9, 2015 <br /> <br /> <br />TABLE OF CONTENTS <br /> <br />Letter of Transmittal <br />1.0 INTRODUCTION ......................................................................................... 1  <br />1.1 PURPOSE AND SCOPE .......................................................................................1  <br />1.2 SITE LOCATION AND PROJECT DESCRIPTION ........................................1  <br />1.3 PREVIOUS EXPLORATIONS ............................................................................2  <br />2.0 GEOLOGY AND SEISMICITY .................................................................. 2  <br />2.1.1 Regional Geology ........................................................................................2  <br />2.1.2 Site Geology and Seismicity ......................................................................2  <br />2.1.2.1 Artificial Fill ....................................................................................3  <br />2.1.2.2 Landslides ........................................................................................3  <br />2.1.2.3 Residual Soil ....................................................................................4  <br />2.1.2.4 Colluvium ........................................................................................4  <br />2.1.2.5 Alluvium ..........................................................................................4  <br />2.1.2.6 Livermore Gravels ...........................................................................5  <br />2.1.2.7 Groundwater ....................................................................................5  <br />3.0 SITE RECONNAISSANCE .......................................................................... 6  <br />3.1 GROUNDWATER .................................................................................................6  <br />4.0 CONCLUSIONS AND PRELIMINARY RECOMMENDATIONS ......... 6  <br />4.1 LANDSLIDES AND SLOPE STABILITY .........................................................6  <br />4.2 SEISMIC HAZARDS ............................................................................................7  <br />4.2.1 Ground Rupture ...........................................................................................7  <br />4.2.2 Ground Shaking ...........................................................................................7  <br />4.2.3 Liquefaction .................................................................................................7  <br />4.2.4 Lateral Spreading .........................................................................................8  <br />4.2.5 Earthquake-Induced Landslides ...................................................................8  <br />4.3 EXPANSIVE SOIL ................................................................................................8  <br />4.4 CORROSION POTENTIAL ................................................................................9  <br />4.5 FLOODING ............................................................................................................9  <br />5.0 PRELIMINARY SITE RECOMMENDATIONS ...................................... 9  <br />5.1 GENERAL SITE CLEARING .............................................................................9  <br />5.1.1 Demolition and Stripping .............................................................................9  <br />5.2 COLLUVIUM AND LANDSLIDE REMOVALS ............................................10  <br />5.3 ACCEPTABLE FILL ..........................................................................................10  <br />5.4 SLOPES ................................................................................................................10  <br />5.4.1 Gradients ....................................................................................................10  <br />5.4.2 Fill Placed on Existing Slopes ...................................................................11  <br />5.4.3 Slope Setbacks ...........................................................................................11