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I <br /> Quarterly Report - Second Quarter 2003 <br /> Former CHASE CHEVROLET (Van Buren) Facility <br /> 424 North Van Buren Street, Stockton, California <br /> TABLE OF CONTENTS <br /> SECTION PAGE <br /> 1.0. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 2.0. PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 21 In-Situ OZONE SPARGE SYSTEM INSTALLATION 1 <br />' 2 1 1 Ozone Well Installation 1 <br /> 2 1 2 Ozone Distribution System Installation 2 <br /> 2 1 3 Ozone Generator Installation 2 <br /> 22 QUARTERLY WELL MONITORING PROCEDURES 2 <br /> 2 2 1 Well Monitoring and Purging 2 <br /> 2 2 2 Collection of Ground Water Samples 3 <br /> 3.0. FINDINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br /> 3 1 GROUND WATER ELEVATION AND GRADIENT 3 <br /> 32 ANALYTICAL RESULTS OF WATER SAMPLES 4 <br /> 4.0. SUMMARY/CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 <br />' 5.0 RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 <br />' 6.0 LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 <br />' FIGURES <br />' Figure 1 -Location Map <br /> Figure 2 - Site Plan <br /> Figure 3 - Ozone Distribution System <br />' Figure 4 - Ozone Sparge Well Design <br /> Figure 5 - Ground Water Elevation Map <br /> Figure 6 - TPH-g/Benzene Impacted Ground Water <br /> I <br /> 1 <br /> I <br />