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'I 'I <br /> ti <br /> Closure Report <br /> Former Mobil Bulk Plant 04-343, Tracy, California: <br /> April 14, 1997 i E, <br /> iy <br /> (TABLE OF CONTENTS <br /> Section P_ae <br /> 1.0 INTRODUCTION-......................................::... <br /> 2.0 SITE DESCRIPTION <br /> ............... ........................................................1 <br /> 3.0 PREVIOUS SITE ASSESSMENT ACTIVITIES..........:...................... 2 <br /> 3.1 Remedial Activities <br /> .............................................................................3 <br /> 4.0 ASSESSMENT OF REMAINING HYDROCARBONS......................... <br /> 4.1 Hydrocarbons in Soil.!!..... ........ <br /> `.. ..........................................................................4 <br /> 4.2 Hydrocarbons in Groundwater.:.....................................................................................4 <br /> 5.0 SENSITIVE RECEPTORS................::.......`..............................................................................5 <br /> I <br /> I' <br /> 6.0 RATIONALE FOR SITE CLOSURE......... ..:..........................................................................5 <br /> 7.0 RECOMMENDATION.........'...... .. .. <br /> ..............................................................................6 <br /> f <br /> 8.0 LIMITATIONS 6 <br /> ' E I <br /> 9.0 REFERENCES......................:......................... .........................................................................7 i <br /> Figures <br /> 1 Vicinity Map <br /> 2 Site Plan <br /> 3 Soil Boring Locations f <br /> 4 Residual Soil Hydrocarbons M <br /> 5 Cross Section A-A' <br /> 6 Cross Section B-B' ' <br /> 7 Groundwater Elevation Contour Map, January 14, 1997 <br /> 8 Dissolved-Phase Hydrocarbons,January 14 and February 27, 1997 <br /> t <br /> I <br /> Ii <br /> II L <br /> II <br /> I <br /> a <br /> n <br /> i <br /> �s <br />—.�_. - .��. � ♦_- � .-tea __ _.d <br />