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• TABLE OF CONTENTS <br />Page <br />PURPOSE AND SCOPE OF STUDY 1 <br />PROPOSED CONSTRUCTION 1 <br />GEOLOGIC SETTI~lG 6 <br />SITE GEOLOGY 6 <br />SEISPIIC EXPOSURE 9 <br /> Historic Seismicity 9 <br /> Potentially Capable Faults 12 <br /> Design Earthquake 13 <br /> SUBSURFACE CONDITIONS 14 <br /> Valley 14 <br /> South Hillside 14 <br /> Dam Site 16 <br /> Water Tank 18 <br /> Haul Road 18 <br />• Ground Water 19 <br /> HAUL ROAD DESIGN 21 <br /> Subgrade material 22 <br /> Design Traffic 22 <br /> Recommended Section 22 <br /> Design and Construction Details 23 <br /> SEDIMENTATION POND AND EMBANKMENT 23 <br /> EMBANKMENT STABILITY 25 <br /> EMBANKMENT DESIGN AND CONSTRUCTION DETAILS 25 <br /> PERIODIC INSPECTION AND MOVEMENT MONITORING 29 <br /> SITE GRADING 29 <br /> Cut and Fill Slopes 29 <br /> Rock Cuts 30 <br /> Material and Compaction Specifications 32 <br /> Surface Drainage 35 <br /> LIMITATIONS 36 <br />• FIELD INVESTIGATION 39 <br /> LOSS OF EXPLORATION HOLES FOR SEDIMENTATION 41 <br /> POND EMBANKMENT <br />