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TABLE OF CONTENTS <br /> 1 0 INTRODUCTION AND PURPOSE 1 <br /> 2 0 SITE BACKGROUND INFORMATION 1 <br /> 2 1 Site Description 1 <br /> 22 Underground Storage Tank Removal, 1970s 1 <br /> ' 2 3 Underground Storage Tank Removal Work, October 1991 1 <br /> 24 Subsurface Investigation, May 1992 2 <br /> 25 Quarterly Ground Water Monitoring, May 1992 through March 1993 2 <br /> 26 Communications with San Joaquin County 3 <br /> ' 27 L:aching Potential Analyses 4 <br /> 3 0 GENERAL RISK APPRAISAL 4 <br /> 4 0 DISCUSSION OF SITE CONDITIONS 6 <br /> 4 1 Soli Conditions 6 <br /> 4 2 Ground Water Conditions 6 <br /> 5 0 CONCLUSIONS AND RECOMMENDATIONS 7 <br />' 6 0 REMARKS AND SIGNATURES 8 <br />' Tabies <br /> TABLE I Laboratory Analysis - Soil <br />' TABLE 2 Soil Sample Analytical Results <br /> TABLE 3 Ground Water Level Data <br /> TABLE 4 Ground Water Sample Analytical Results <br /> TABLE 5 Leaching Potential Analysis <br /> REFERENCE <br /> J E. Odencrantz, J M. Farr, C E Robinson, "Transport Model Parameter Sensitivity for Soil Clean Up <br /> Level Determinations Usmg SESOIL and AT123D ui the Context of the California Leaking Underground <br />' Fuel Tank Field Manual", pp 164, Journal of Soil Contamination, Vol 1 No_ 2, Association for the <br /> Environmental Health of Sods, Luis Publishers, Ann Arbor <br /> I <br />