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• TABLE OF CONTENTS <br /> PAGE <br /> 10. INTRODUCTION <br /> 20. BACKGROUND . . . . . . . . . 1 <br /> 21 SITE DESCRIPTION 1 <br /> 22 UNDERGROUND STORAGE TANK REMOVAL 2 <br /> 22 PREVIOUS SUBSURFACE INVESTIGATION 2 <br /> 23 REGIONAL GEOLOGIC SETTING 4 <br /> 24 GROUND WA ER DEPTH AND GRADIENT 4 <br /> 30 SCOPE OF WORK . . . . . . . . . 4 <br /> 31 PERMITTING AND PRE-FIELD WORK ACTIVITIES 5 <br /> 32 WELL INSTALLATION 6 <br /> 3 3 GROUND WATER AQUIFER PUMPING TEST 6 <br /> 34 SOIL VAPOR EXTRACTION PILOT TEST 7 <br /> 3 5 IN-SITU AIR SPARGING PILOT TEST 7 <br /> 36 AIR SPARGE/SOIL VAPOR EXTRACTION PILOT TEST 7 <br /> 3 7 REPORT PREPARATION 7 <br /> 40 FIELD PROCEDURES . . . . . . . . . . . . . . . . . . . 8 <br /> 41 DRILLING AND SAMPLING g <br /> 42 WELL COMPLETION 9 <br /> 43 WELL DEVELOPMENT 9 <br /> 44 GROUND WATER AQUIFER PUMPING TEST 10 <br /> 45 SOIL VAPOR EXTRACTION PILOT TEST 11 <br /> 46 IN-SITU AIR SPARGING PILOT TEST 11 <br /> 47 SOIL VAPOR EXTRACTION/IN-SITU AIR SPARGE PILOT TEST 11 <br /> FIGURES <br /> FIGURE 1 -Location Map <br /> FIGURE 2 -Site Plan <br /> FIGURE 3 -Hydrocarbon-Impact Cross Section B-B' <br /> FIGURE 4 -Proposed Ground Water Extraction Well Design <br /> FIGURE 5 -Proposed Soil Vapor Extraction Well Design <br /> FIGURE 6 -Proposed Ground Water Monitoring Well Design <br /> FIGURE 7 -Proposed In-Situ Air Sparging Well Design <br /> TABLES <br /> TABLE 1 -Analytical Results of Underground Storage Tank Removal Soil Samples <br /> TABLE 2 -Analytical Results of BoringlMonitoring Well Soil Samples <br /> TABLE 3 -Analytical Results of Grab Ground Water Samples <br /> TABLE 4 -Analytical Results of Monitoring Well Water Samples <br /> Advanced GwEnvironmentaf,Inc <br />