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PART I: SOIL SUITABILITY/NITRATE LOADING STUDY <br /> TRAYLOR SHEA PRECAST <br /> TABLE OF CONTENTS <br /> I. SOIL SUITABILITY STUDY ...................................................................................... 1 <br /> I.1 Introduction and Proposed Development .......................................................1 <br /> I.1.1 Site Description ................................................................................................1 <br /> I.1.2 Proposed Development..................................................................................2 <br /> I.1.3 Site Vicinity......................................................................................................2 <br /> I.1.4 Site Map ..........................................................................................................2 <br /> I.2 Present and Past Uses of the Site....................................................................2 <br /> I.2.1 Past and Present Site Use..................................................................................2 <br /> I.3 Existing and Proposed Septic Tank Usage.......................................................2 <br /> I.3.1 Existing On-Site Septic Tank Usage.................................................................2 <br /> I.3.2 On-Site Septic Permit History .........................................................................2 <br /> I.3.3 On-Site Septic Repair Permit History...............................................................2 <br /> I.3.4 Existing Septic Tank Usage in the Vicinity........................................................3 <br /> I.3.5 Septic Permit History in the Vicinity.................................................................3 <br /> I.3.6 Septic Repair Permit History in the Vicinity..........................................................3 <br /> I.3.7 Expected On-Site Maximum Septic Tank Usage ...................................................4 <br /> I.4 Ground Water Information ..............................................................................4 <br /> I.4.1 Ground Water Depth and Gradient..................................................................4 <br /> I.4.2 Potential Ground Water Contamination Issues .................................................4 <br /> I.4.3 Water Sample Location..................................................................................5 <br /> I.5 Soil Profile and Geologic Information .............................................................5 <br /> I.5.1 Soil Boring Locations .....................................................................................5 <br /> I.5.2 Soil Boring Dimensions ..................................................................................5 <br /> I.5.3 Soil Lithology Observed.....................................................................................6 <br /> I.5.4 Discussion of Soil Lithology................................................................................6 <br /> I.6 Percolation Test Information...........................................................................6 <br /> I.6.1 Percolation Test Locations .................................................................................6 <br /> I.6.2 Number of Percolation Tests..............................................................................6 <br /> I.6.3 Boring Preparation and Presaturation..............................................................6 <br /> I.6.4 Condition of Borings After Presaturation..........................................................7 <br /> I.6.5 Percolation Test Procedure.............................................................................7 <br /> I.6.6 Percolation Test Forms and Results ................................................................7 <br /> I.6.7 Discussion of Percolation Test Results.............................................................7 <br /> I.6.8 Discussion of Septic System Sizing..................................................................8 <br /> II. NITRATE LOADING STUDY......................................................................................8 <br /> II.1 Chemical and Physical Properties of Soil.........................................................8 <br /> II.1.1 Chemical and Physical Soil Properties..............................................................8 <br /> II.1.2 Mass Transport Soil Properties .......................................................................9 <br /> II.2 Ground Water Analysis.....................................................................................9 <br /> II.2.1 Regional Ground Water..................................................................................9 <br /> y <br /> 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 02007 Neil O.Anderson&Associates,Inc <br />