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Soil Suitability and Nitrate Loading Study <br />DUARTE PROPERTY <br />11855 Mountain View Road, Tracy, California <br /> <br />TABLE OF CONTENTS <br /> <br /> <br />SECTION PAGE <br /> <br />1.0. INTRODUCTION AND PROPOSED DEVELOPMENT ......................................... 1 <br />1.1. DESCRIPTION OF SITE .................................................................................... 1 <br />1.2. DESCRIPTION OF PROPOSED DEVELOPMENT ........................................... 2 <br />1.3. PARCEL VICINITY LOCATION MAP ................................................................. 2 <br />1.4. SITE MAP .......................................................................................................... 2 <br />2.0. PRESENT AND PAST USAGE OF SITE .............................................................. 2 <br />2.1 POTENTIAL SITE PROBLEM ASSESSMENT .................................................. 2 <br />3.0. EXISTING AND PROPOSED SEPTIC TANK USAGE ......................................... 3 <br />3.1. EXISTING ON-SITE SEPTIC TANK USAGE ..................................................... 3 <br />3.2. SITE SEPTIC PERMIT HISTORY ...................................................................... 3 <br />3.3. ON-SITE SEPTIC TANK REPAIR HISTORY ..................................................... 3 <br />3.4. EXISTING SEPTIC TANK USAGE IN THE GENERAL AREA ........................... 3 <br />3.5. GENERAL AREA SEPTIC PERMIT HISTORY .................................................. 3 <br />3.6. PROPOSED MAXIMUM SEPTIC TANK USAGE ON SITE ............................... 4 <br />4.0. GROUNDWATER INFORMATION - REGIONAL HYDROGEOLOGY ................. 5 <br />4.1. GROUNDWATER DESCRIPTION FOR THE GENERAL AREA ....................... 5 <br />4.3. ON-SITE EXISTING WELL DESCRIPTION ....................................................... 6 <br />4.4. CONSTITUENTS BEING TESTED FOR IN THE WATER SAMPLE ................. 6 <br />4.5. GROUNDWATER SAMPLE COLLECTION ....................................................... 6 <br />4.6. GROUNDWATER ANALYTICAL REPORT........................................................ 7 <br />5.0. SOIL PROFILE ..................................................................................................... 7 <br />5.1. SOIL PROFILE PIT INCLUDING DEPTH AND DIMENSIONS .......................... 7 <br />5.2. SOIL LITHOLOGY AS RELATED TO FUTURE ONSITE SEPTIC USES .......... 7 <br />6.0. PERCOLATION TEST INFORMATION ................................................................ 7 <br />6.1. NUMBER OF PERCOLATION TESTS PERFORMED ....................................... 8 <br />6.2. CONSTRUCTION OF PERCOLATION TEST HOLE ......................................... 8 <br />6.3. DESCRIPTION OF THE PERCOLATION TEST HOLE - POST SOAK ............. 8 <br />6.4. PERCOLATION TEST CONFORMED TO SJC POLICY EHD 98-02 ................ 8 <br />6.5. COMPLETED PERCOLATION TEST FORM..................................................... 9 <br />6.6. POTENTIAL PROBLEMS PREDICTED ............................................................. 9 <br />6.7. PERCOLATION TEST FINDINGS ..................................................................... 9 <br />7.0. CHEMICAL AND PHYSICAL PROPERTIES OF SOIL ........................................ 9 <br />7.1. CHEMICAL AND PHYSICAL PROPERTIES OF SITE SOILS ........................... 9 <br />7.2. MASS TRANSPORT PROPERTIES OF UNDERLYING SITE SOILS ............... 9