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a 7 <br /> TABLE OF CONTENTS <br /> t Pale <br /> 1 0 INTRODUCTION AND SCOPE OF WORK 1 <br /> 20 BACKGROUND 1 <br /> 21 SITE DESCRIPTION 1 - <br /> 22 UNDERGROUND STORAGE TANK REMOVAL 1 <br /> 23 SITE ASSESSMENT 2 <br /> mi <br /> 3 0 SPARGING WELL INSTALLATION 2 <br /> 31 DRILLING AND SAMPLING 2 <br /> 3 2 LOGGING 3 <br /> 3 3 WELL COMPLETION 3 <br /> 3 4 STRATIGRAPHY 3 <br /> ' 3 5 ANALYTICAL RESULTS OF SOIL SAMPLES 3 ; <br /> 40 IN--SITU AIR SPARGING PILOT TEST 4 <br /> ' 41 PROCEDURES 1 4 <br /> 4 1 1 SYSTEM INSTALLATION,AND SETUP 4 <br /> 4 1 2 ,COLLECTION OF BASELINE GROUND WATER SAMPLES 4 <br /> 4 1 3 FIELD MEASUREMENTS AND DATA COLLECTION 4 <br /> 4 <br /> 42 RESULTS OF IN-SIT UAIR SPARGING PILOT TFST 5, <br /> 42 1 INDUCED PRESSURE 5 <br /> 4 2 2 DISSOLVED OXYGEN 15 <br /> 4 2 3 ORGANIC VAPORS 5 <br /> 424 GROUND WATER DEPTH 5 <br /> ' 4 2 5 LABORATORY RESULTS OF GROUND WATER SAMPLES 5 <br /> 50 QUARTERLY GROUND WATER MONITORING, FEBRUARY 1996 6 <br /> 51 MONITORING V`TELL PURGE PROCEDURES 6 <br /> 52 COLLECTION OF GROUND WATER SAMPLES 6 ' <br /> 53 RELATIVE GROUND WATER ELEVATION AND GRADIENT b <br /> ' 54 ANALYTICAL RESULTS OF'WA'IER SAMPLES 7 <br /> 60 REMEDIATION OF HYDROCARBON-IMPACTED SOIL 7 <br /> 61- SOIL VAPOR EXTRACTION 7 <br /> 611 PRINCIPLES 7 <br /> r <br /> ' 6 1 2 EFFECTIVE SOIL CONDITIONS 8 <br /> 6 1 3 MONITORING ACTIVII IES 8 <br /> 614 FEASIBILITY 8 <br /> ' 6 1 5 ESTIMATED COST OF SOIL VAPOR EXTRACTION - 9 <br /> 62 EX-SITU TREATMENT OF IMPACTED SOIL 9 <br /> 6 2 1 EXCAVATION 9 <br /> 6 2 2 FEASIBILITY OF EXCAVATION 10 <br /> 6 2 3 ESTIMATED COSTS FOR EXCAVATION 10 <br /> f <br />