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kNj KLEINFELDER <br /> TABLE OF CONTENTS <br /> Chapter Page <br /> 1 EXECUTIVE SUMMARY 1 <br /> 2 INTRODUCTION 3 <br /> 2.1 Background 3 <br /> 2.2 SWWQAT Activities 3 <br /> 3 DISPOSAL SITE INFORMATION 5 <br /> 4 LAND AND WATER USE 7 <br /> 4.1 Land Use 7 <br /> 4.2 Water Use 7 <br /> 5 SITE GEOLOGY 9 <br /> 5.1 Subsurface Geology 9 <br /> 5.2 Surface Soils 11 <br /> 6 VADOSE ZONE AND LEACHATE ASSESSMENT 12 <br /> 6.1 Field Activities 12 <br /> 6.2 Chemical Analysis - - 14 <br /> 6.3 Results 15 <br /> 7 GROUND WATER ASSESSMENT 17 <br /> 7.1 Ground Water Gradient Assessment 18 <br /> 7.2 Ground Water Quality Assessment 18 <br /> 8 SURFACE WATER ASSESSMENT 21 <br /> '8.1 Field Activities 21 <br /> 8.2 Chemical Analysis 22 <br /> 8.3 Results 22 <br /> 9 SUMMARY OF AIR QUALITY SWAT RESULTS 24 <br /> 9.1 Landfill Gas Characterization 24 <br /> 9.2 Ambient Air Quality 24 <br /> 9.3 Landfill Gas Perimeter Monitoring 25 <br /> 10 CONCLUSIONS 26 <br /> 11 CERTIFICATION 28 <br /> 12 REFERENCES 29 <br /> 13 LIMITATIONS 30 <br /> APPENDICES <br /> Appendix A Central Valley Regional Water Quality Control Board approval letter for <br /> SWAT Proposal <br /> F19-91-33 Page iu of iv <br /> Copyright 1991 KLeinfelder, Inc. <br />