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■ Z1 INC <br /> TABLE OF CONTENTS <br /> Page <br /> 1 0 SIGNATURE PAGE 1 <br /> 20 EXECUTIVE SUMMARY 2 <br /> 30 INTRODUCTION 4 <br /> 31 Scope of Work 4 <br /> 32 Project Background 6 <br /> 33 Site Assessment Workplan 10 <br /> 34 Limitations of Investigation 12 <br /> 40 REGIONAL GEOLOGY AND HYDROGEOLOGY 13 <br /> 50 SITE ASSESSMENT INVESTIGATION 15 <br /> 51 Soil Sampling 15 <br /> 52 Monitoring Well Construction 16 <br /> 53 Groundwater Sampling 17 <br /> 60 LABORATORY ANALYSES 20 <br /> 61 Soil Samples 20 <br /> 62 Groundwater Samples 21 <br /> 70 SITE ASSESSMENT INVESTIGATION RESULTS 22 <br /> 7 1 Site Geology 22 <br /> 72 Site Hydrogeology 23 <br /> 73 Estimated Extent of Petroleum Hydrocarbon Contamination 23 <br /> 74 Well Survey 26 <br /> 75 Groundwater Monitoring Program 27 <br /> 76 Groundwater Gradient 29 <br /> 80 SOIL AND GROUNDWATER REMEDIATION 30 <br /> 81 Soil Remediation 30 <br /> 82 Groundwater Remediation 32 <br /> 83 Estimated Performance of Remedial Action 36 <br /> 90 SITE CLOSURE CHECKLIST SUMMARY 39 <br /> 100 CONCLUSIONS AND RECOMMENDATIONS 43 <br /> 110 REFERENCES 46 <br />�s <br />