1810 104TH ST SE A T AND T WIRELESS ANTENNA 2022-12-02

TABLE OF CONTENTS Page EXECUTIVESUMMARY.............................................................................................................i 1.0 INTRODUCTION.............................................................................................................1 2.0 PROJECT INFORMATION .............................................................................................1 2.1 Project Description...............................................................................................1 2.2 Site Location and Description ..............................................................................2 3.0 SUBSURFACE CONDITIONS ........................................................................................2 3.1 Site Geology........................................................................................................2 3.2 Typical Profile ......................................................................................................2 3.3 Groundwater........................................................................................................2 4.0 RECOMMENDATIONS FOR DESIGN AND CONSTRUCTION ......................................3 4.1 Geotechnical Considerations ...............................................................................3 4.2 Earthwork ............................................................................................................3 4.2.1 Site Preparation........................................................................................3 4.2.2 Subgrade Preparations.............................................................................3 4.2.3 Fill Material Requirements........................................................................4 4.2.4 Compaction Requirements.......................................................................5 4.2.5 Grading and Drainage..............................................................................5 4.2.6 Earthwork Construction Considerations....................................................5 4.3 Foundation Recommendations ............................................................................5 4.3.1 Drilled Shaft Foundations .........................................................................5 4.3.2 Drilled Shaft Construction Considerations ................................................7 4.3.3 Engineered Mat Foundation .....................................................................8 4.3.4 Construction Considerations.....................................................................9 4.4 Equipment Shelter and Generator Slabs..............................................................9 4.5 Seismic Considerations......................................................................................10 4.5.1 Fault Zones............................................................................................10 4.5.2 Liquefaction............................................................................................10 4.6 Field Resistivity Testing .....................................................................................10 5.0 GENERAL COMMENTS...............................................................................................11 APPENDIX A—FIELD EXPLORATION Exhibit A-1 Site Location Map Exhibit A-2 Site & Exploration Plan Exhibit A-3 Field Exploration Description Exhibit A-4 Boring Log B-1 APPENDIX B—LABORATORY TESTING Exhibit B-1 Laboratory Testing Exhibit B-2 Grain Size Distribution Results APPENDIX C—SUPPORTING DOCUMENTS Exhibit C-1 General Notes Exhibit C-2 Unified Soil Classification System Exhibit C-3 USGS Seismic Design Maps Summary Report Responsive■ Resourceful■ Reliable