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' TABLE OF CONTENTS <br /> Page <br /> 10 INTRODUCTION 1 <br /> 20 BACKGROUND/PREVIOUS INVESTIGATION 1 <br /> f <br /> 21 UNDERGROUND STORAGE TANK REMOVAL I <br /> 22 MONITORING WELL INSTALLATION i <br /> 23 QUARTERLY GROUND WATER MONITORING 2 <br /> 24 REMEDIATION WELL INSTALLATION 3 <br /> 25 SLUG TEST 3 <br /> ' <br /> 26 VAPOR EXTRACTION PILOT TEST 3 <br /> 27 PURGED WAI ER/ STOCKPILED SOIL DISPOSITION 4 <br /> 30 SOIL AND GROUND WATER REMEDIATION 4 <br /> 3 1 SOIL VAPOR EXTRACTION 4 <br /> ' 3 2 IN--SITU AIR SPARGING 5 <br /> 3 3 REMEDIATION PROGRESS SOIL SAMPLING 5 <br /> 3 3 1 PROBING AND SAMPLING 6 <br />' 3 3 2 LOGGING/STRATIGRAPHY 6 <br /> 3 3 3 LABORATORY ANALYSIS 7 <br /> 40 QUARTERLY GROUND WATER MONITORING, APRIL 1997 7 <br /> 41 MONITORING WELL PURGE PROCEDURES 7 <br />' <br /> 42 COLLECTION OF GROUND WATER SAMPLES 8 <br /> 43 GROUND WATER ELEVATION AND FLOW DIRECTION 8 <br /> 44 LABORATORY ANALYSIS OF GROUND WATER SAMPLES 8 <br />' 45 WELL SURVEY 9 <br /> 50 MASS CALCULATIONS AND MODELING 9 <br />' 5 1 PETROLEUM HYDROCARBONS IMPACTED SOIL 9 <br /> 511 PRE-REMEDIATION 9 <br /> 512 POST-REMEDIATION 10 <br />' <br /> 52 MASS CALCULATION OF RECOVERED PRODUCT 10 <br /> 5 3 MODELING OF REMAINING HYDROCARBON-IMPACTED SOIL I 1 <br /> 5 3 1 OVERVIEW OF SESOIL 11 <br /> 5 3 2 SITE SPECIFIC CONDITIONS 11 <br /> 5 3 3 RESULTS OF SESOIL MODELING 12 <br /> — 60 6 0 CONCLUSIONS/SUMMARY -- . - - - _ - - w - 12 - <br /> 70 <br /> 12r70 RECOMMENDATIONS 13 <br /> . <br /> 80 LIMITATIONS 14 <br />