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---------- --------- <br /> Former Discovery Chevrolet June 6, 1997 <br /> Tracy,California Re ort of Additional Subsurface Investigatio <br /> CONTENTS <br /> INTRODUCTION I <br /> SITE DESCRIPTION AND BACKGROUND.................................................................. I <br /> FIELD WORK 3 <br /> LABORATORY METHODS AND RESULTS................................................................ 6 <br /> EVALUATION OF INTRINSIC BIOREMEDIATION................................................... 7 <br /> CONCLUSIONS I I <br /> RECOMMENDATIONS................................................................................................... 12 <br /> DISTRIBUTION................................................................................................................ 13 <br /> LIMITATIONS.................................................................................................................. 14 <br /> FIGURES <br /> FIGURE 1: SITE VICINITY MAP <br /> FIGURE 2: SITE PLAN/GROUNDWATER CONTOUR MAP <br /> FIGURE 3: WORK AREA <br /> FIGURE 4: WELL INVENTORY MAP <br /> TABLES <br /> TABLE 1: ANALYTICAL RESULTS FOR SOIL SAMPLES <br /> TABLE 2: ANALYTICAL RESULTS FOR GROUNDWATER BIO-PARAMETERS <br /> TABLE 3: GROUNDWATER DATA <br /> TABLE 4: WELL INVENTORY <br /> APPENDICES <br /> A: Historical Groundwater Data <br /> B: San Joaquin County Public Health Services/Environmental Health Division <br /> Well Permit And Work Plan Approval Coversheet. <br /> C: Horizon Environmental Inc. Field Methods And Procedures <br /> D: Boring Logs and Key <br /> E: Monitoring Well Data Sheets <br /> F: Laboratory Reports and Chain of Custody Records <br /> 3001-11.rpt ii HORIZON ENVIRONMENTAL INC. <br />