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SOIL SUITABILITY STUDY / NITRATE LOADING STUDY <br />11655 S UNION ROAD <br />TABLE OF CONTENTS <br />1.0 INTRODUCTION 1 <br /> <br />1.1 Description of Site 2 <br /> <br />1.2 Proposed Development 2 <br />2.0 PAST, PRESENT AND PROPOSED FUTURE USES 2 <br />3.0 GEOLOGIC AND SOIL PROFILE INFORMATION 2 <br /> <br />3.1 Chemical and Physical Soil Properties 2 <br /> <br />3.2 Mass Transport Soil Properties 3 <br />4.0 GROUNDWATER INFORMATION 3 <br /> <br />4.1 Groundwater Depth and Gradient 3 <br /> <br />4.2 Potential Groundwater Contamination Issues 4 <br /> <br />4.3 Water Sample Locations and Constituents 4 <br /> <br />4.4 Current and Future On-Site Groundwater Uses 5 <br />5.0 SOURCES AND IMPACT OF NITRATE TO GROUNDWATER 5 <br /> <br />5.1 Current Off-Site Sources of Nitrate 5 <br /> <br />5.2 Contribution of Rainfall 5 <br /> <br />5.3 Current On-Site Sources of Nitrate 5 <br /> <br />5.4 Future On-Site Sources of Nitrate 6 <br />5.4.1 Quantity and Quality of Domestic Wastewater from Proposed Project 6 <br />5.4.2 Denitrification Estimate 7 <br /> <br />5.5 Nitrate Loading 7 <br /> <br />5.6 Impact of Nitrate Loading to Nearby Water Sources 7 <br />6.0 DISCUSSION OF NITRATE LOADING RESULTS 8 <br /> <br />6.1 Total Nitrate Impact 8 <br /> <br />6.2 Nitrate Loading - Methods of Mitigation 8 <br />7.0 EXISTING AND PROPOSED SEPTIC TANK USAGE 8 <br /> <br />7.1 Existing On-Site Septic Tank Usage, Permits and Repair History 8 <br /> <br />7.2 Expected Maximum Septic Tank Usage for Site 9 <br /> <br />7.3 General Area Septic Tank Usage, Permit, and Repair History 9 <br />8.0 PERCOLATION TEST INFORMATION 10 <br /> <br />8.1 Soil Boring Log 10 <br /> <br />8.2 Percolation Test Procedure 11 <br /> <br />8.3 Percolation Test Form and Results 11 <br />9.0 SOIL SUITABILITY STUDY CONCLUSIONS 12 <br />Petralogix Engineering, Inc. <br />- '5675 BrueIla Road, Galt, Ca 95632 <br />09)-400-5729 <br />..ww.petralogix.corn <br />I