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Geotechnical Investigation South River Place, Gasser Drive, Napa 29 December 2010
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LETTER OF TRANSMITTAL
TABLE OF CONTENTS
Page No.
GEOTECHNICAL INVESTIGATION...........................................................................................5
Purpose and Scope ...............................................................................................................5
Site Location and Description..............................................................................................5
Proposed Development ........................................................................................................6
Previous Investigation..........................................................................................................7
Field Investigation ...............................................................................................................8
Laboratory Investigation......................................................................................................8
Subsurface Conditions .........................................................................................................9
Site Geology.......................................................................................................................10
Geo-Hazards ......................................................................................................................10
DISCUSSION, CONCLUSIONS AND RECOMMENDATIONS...............................................14
General...............................................................................................................................14
Geotechnical Considerations .............................................................................................14
Grading ..............................................................................................................................16
Surface Drainage................................................................................................................18
Foundations........................................................................................................................20
Slab-on-Grade Construction ..............................................................................................21
Pavement Areas .................................................................................................................22
Retaining Walls..................................................................................................................24
General Construction Requirements..................................................................................24
LIMITATIONS AND UNIFORMITY OF CONDITIONS ..........................................................26
APPENDIX A
Vicinity Map, Figure 1
Aerial Photo, Figure 2
Geologic Map, Figure 3
Site Plan, Figure 4
Logs of Test Borings, Figures 5 through 11
Boring Log Legend
Laboratory Test Results
APPENDIX B - 2002 INVESTIGATION APPENDIX
Site Plan
Conceptual Site Plan
Logs of Test Borings 1 to 8
Test Pit Logs
Laboratory Test Results
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KC ENGINEERING COMPANY Project No. VV3200 Page 3 of 123