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I <br /> Additional Site Assessment and Second Quarter 1999 Monitoring and Sampling Report h <br /> iv 7-Eleven Inc,Store#19976, 1399 N Main St,Manteca,California _._ July 15,1999 <br /> CONTENTS <br /> 10 INTRODUCTION 1 <br /> 20 BACKGROUND 1 <br /> ' 30 SOIL AND GROUNDWATER ASSESSMENT WORK 4 <br /> 31 Permitting/Site-Specific Health and Safety Pian 4 <br /> 32 Soil Bonngs . 4 <br /> 33 Soil Sample Collection 4 <br /> 34 Groundwater Monitoring Well Installation/Surveying 5 <br /> 35 Groundwater Monitoring and Sampling 5 <br /> 40 RESULTS 6 <br />' <br /> 41 Geology and Hydrogeology 6 <br /> 42 Results of Sod Sample Analyses 7 <br /> 43 Results of Groundwater Monitonng/Analyses 7 <br />' 50 CLOSURE ABSTRACT g <br /> Figures <br /> 1 Site Location Map <br /> 2 Site Plan <br />' 3 Dissolved Hydrocarbon Concentration and Potentiometnc Surface Map (6104/99) <br /> 4 Cross Section Map(A-A) <br /> 5 Cross Section Map (B-B) <br /> Tables <br />' 1 Results of Soil Sample Analysis <br /> 2 Groundwater Monitoring and Analytical Data <br />' Appendices <br /> A Drilling Logs <br />' B Survey Data <br /> C Field Data Sheets <br /> D Laboratory Reports and Chain-of-Custody <br /> i <br /> I <br /> I <br /> I <br /> 1997682 sar <br />