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TABLE OF CONTENTS 1.0 SOIL SUITABILITY STUDY.............................................................................................3 1.1 Introduction and Development.............................................................................3 2.1.1 1.1.1 Site Description........................................................................................3 2.1.2 Mass Transport Soil Properties..............................................................15 1.1.2 Proposed Development............................................................................4 Analysis ......................----------- ..... ........................... ----------..15 1.1.3 Site Vicinity...............................................................................................4 2.2.2 1.1.4 Site Map...................................................................................................4 2.2.3 1.2 Present and Past Uses of the Site.......................................................................4 2.3 Sources and Impact of Nitrate to Groundwater..................................................16 1.2.1 Past and Present Site Use........................................................................4 1.3 Existing and Proposed Septic Tank Usage..........................................................5 2.3.3 1.3.1 Existing On -Site Septic Tank Usage.........................................................5 2.3.4 Future On -Site Sources of Nitrate...........................................................16 1.3.2 Site Specific Permit History ......................................................................5 1.3.3 Discussion of On -Site Septic Tank Installation and Repair .......................6 1.3.4 Existing Septic Tank Usage in the Vicinity... ................ ................ _.. - _ 6 1.3.5 Septic Permit History in the Vicinity..........................................................6 1.3.6 Septic Repair Permit History in the Vicinity...............................................7 1.3.7 Expected On -Site Maximum Septic Tank Usage......................................7 1.4 Groundwater Information.....................................................................................8 1.4.1 Groundwater Depth and Gradient.............................................................8 1.4.2 Potential Groundwater Contamination Issues...........................................9 1.4.3 Water Sample Location............................................................................9 1.4.4 Groundwater Sample Analysis...............................................................10 1.4.5 Groundwater Sample Handling...............................................................10 1.5 Soil Profile and Geologic Information.................................................................10 1.5.1 Soil Boring Locations..............................................................................11 1.5.2 Soil Boring Dimensions..........................................................................11 1.5.3 Soil Lithology Observed..........................................................................11 1.5.4 Discussion of Soil Lithology....................................................................12 1.6 Percolation Test Information..............................................................................12 1.6.1 Percolation Test Locations.....................................................................12 1.6.2 Number of Percolation Tests..................................................................12 1.6.3 Boring Preparation and Presaturation.....................................................12 1.6.4 Condition of Borings after Presaturation.................................................13 1.6.5 Percolation Test Procedure....................................................................13 1.6.6 Percolation Test Forms and Results.......................................................13 1.6.7 Discussion of Percolation Test Results...................................................13 1.6.8 Discussion of Septic System Sizing........................................................14 2.0 NITRATE LOADING STUDY.........................................................................................14 2.1 Chemical and Physical Properties of Soil...........................................................15 2.1.1 Chemical and Physical Soil Properties...................................................15 2.1.2 Mass Transport Soil Properties..............................................................15 2.2 Groundwater Analysis ......................----------- ..... ........................... ----------..15 2.2.1 Regional Groundwater............................................................................15 2.2.2 Potential Ground Water Contamination Issues.......................................15 2.2.3 Current and Future On -Site Ground Water Uses....................................15 2.3 Sources and Impact of Nitrate to Groundwater..................................................16 2.3.1 Current Off -Site Sources of Nitrate.........................................................16 2.3.2 Contribution of Rainfall...........................................................................16 2.3.3 Current On -Site Sources of Nitrate.........................................................16 2.3.4 Future On -Site Sources of Nitrate...........................................................16 Responsive ■ Resourceful ■ Reliable