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PHASE VII SUBSURFACE INVESTIGATION San Joaquin County <br /> Montgomery Ward Auto Service Center Public Health Services Department <br /> 5400 Pacific Avenue Stockton CA Site Code 2163 <br /> 1 <br /> TABLE OF CONTENTS <br />' Page <br /> 10 INTRODUCTION 1 <br /> 20 SUMMARY OF PREVIOUS WORK 1 <br /> 21 WASTE OIL UST 1 <br /> 22 BULK OIL USTs 1 <br /> 23 GASOLINE USTs 2 <br /> 23 1 Phase I Investigation 2 <br /> 2 32 Phase II Investigation 2 <br /> 23 3 Phase III Investigation 2 <br /> 2 3 3 1 Sewer Line 2 <br /> 2 3 3 2 Product Lines 3 <br /> 2 34 Phase IV Investigation 3 <br /> 2 3 5 Phase V Investigation 4 <br /> 2 3 6 Phase VI Investigation 4 <br /> 2 3 7 Ground Water Testing Results 4 <br /> 30 FIELD WORK 4 <br /> 31 HYDROPUNCHES 4 <br /> 3 2 DRILLING AND SOIL SAMPLING 5 <br /> 3 3 MONITORING WELL CONSTRUCTION 6 <br /> I <br /> 34 WELL DEVELOPMENT AND SAMPLING 6 <br /> 3 5 EQUIPMENT CLEANING PROTOCOL 6 <br /> I40 SUBSURFACE CONDITIONS 7 <br /> 50 ANALYTICAL TESTING 7 <br /> r5 1 GROUND WATER SAMPLES 7 <br /> 52 SOIL SAMPLES 7 <br /> 60 DISCUSSION AND CONCLUSIONS 7 <br /> 6 1 GROUND WATER 7 <br /> V A. UV1T' 41 <br /> 70 LIMITATION 9 <br /> 80 REFERENCES CITED 10 <br /> • <br /> 1 Project No 1232 - 1 - ENVIRONMENTAL AUDIT, INC <br />