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Additional Site Assessment and Soil Vapor Extraction Test, Second Quarter 2002 Groundwater Monitoring Data ii <br /> 7-Eleven Inc,Store 21756 853 E Yosemite Avenue, Manteca California August 5,2002 <br /> ' CONTENTS <br /> 10 INTRODUCTION 1 <br /> 20 BACKGROUND 1 <br /> ' 30 GEOLOGY AND HYDROGEOLOGY 2 <br /> 40 SENSITIVE RECEPTORS 2 <br /> ' <br /> 50 ASSESSMENT WORK 2 <br /> 51 Permitting/Site-Specific Health and Safety Plan 2 <br /> 52 Soil Borings 3 <br /> ' <br /> 53 Soil Sample Collection 3 <br /> 54 Grab Groundwater Sample Collection 3 <br /> 55 Well Construction/Surveying 4 <br /> ' 60 RESULTS OF SOIL SAMPLE ANALYSES 4 <br /> 70 RESULTS OF GRAS GROUNDWATER SAMPLE ANALYSIS 5 <br /> 1 80 GROUNDWATER MONITORING WELL DATA 5 <br /> 81 Groundwater Monitoring Data 5 <br /> 82 Monitoring Well Sampling and Analytical Results 5 <br /> 83 Purge Water Disposal 6 <br /> 90 SOIL VAPOR EXTRACTION TEST 6 <br /> 91 Procedure 6 <br /> 92 Results 6 <br /> ' 100 SUMMARY AND RECOMMENDATIONS 7 <br /> ' Figures <br /> 1 Site Location Map <br /> ' 2 Potentiometric Surface and Dissolved Hydrocarbon Map (04108102) <br /> Tables <br /> ' 1 Groundwater Analytical Results <br /> 1A Historical Groundwater Analytical Results <br /> 2 Soil Boring Analytical Results <br /> Appendices <br /> A Site Plan and Drilling Logs <br /> . B Field Data Sheets <br /> C Laboratory Reports and Chain-of-Custody <br /> 21756SAR doc <br />