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Well Installation and Soil Vapor Extraction Pilot Test Report <br /> Former STEFANO'S GAS STATION <br /> 1419 East Charter Way, Stockton, California <br /> TABLE OF CONTENTS <br /> SECTION PAGE <br /> 1.0. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 2.0. BACKGROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 21 REGIONAL GEOLOGICAL/HYDROGEOLOGICAL SETTING 1 <br /> 2 2 GROUND WATER DEPTH AND FLOW DIRECTION 2 <br /> 23 UST REMOVAL 2 <br /> 24 PREVIOUS SITE INVESTIGATIONS 2 <br /> 3.0. PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br /> 31 WELL INSTALLATION PROCEDURES 4 <br /> 3 1 1 Soil Sample Collection 4 <br /> 3 1 2 Laboratory Analysis of Soil Samples 5 <br /> 3 1 3 Drilling Equipment Decontamination and Borehole Abandonment 5 <br /> 3 1 4 Well Completions 5 <br /> 32 SOIL VAPOR EXTRACTION PROCEDURES 6 <br /> 32 1 Soil Vapor Extraction Pilot Test 7 <br /> 3 2 2 Soil Vapor Extraction Pilot Test Sampling and Analysis 7 <br /> 4.0. FINDINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 <br /> 41 SOIL DESCRIPTIONS 8 <br /> 42 ANALYTICAL RESULTS OF SOIL SAMPLES 8 <br /> 43 SOIL VAPOR EXTRACTION PILOT TEST RESULTS 8 <br /> 44 ANALYTICAL RESULTS OF SOIL VAPOR SAMPLES 9 <br /> 5.0. SUMMARY AND CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 <br /> 60 RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 <br /> 70. LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 <br /> • <br /> Advanced GeoEnviron mental,Inc <br />