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U-Haul#708-50 <br /> Preliminary Site Conceptual Model Blaes Environmental <br /> December 15,2006 <br /> • TABLE OF CONTENTS <br /> SECTION PAGE <br /> 10 INTRODUCTION _ 1 <br /> 20 BACKGROUND INFORMATION „ ,,. _ 2 <br /> .. . . . . . . .. .. . . <br /> 21 SITE USES 2 <br /> 22 SURROUNDING LAND USE 2 <br /> 23 SITE GEOLOGY 2 <br /> 24 SITE HYDROGEOLOGY 3 <br /> 25 DETECTION OF HYDROCARBON RELEASE 3 <br /> 26 SENSITIVE RECEPTORS WITHIN 500 FEET 4 <br /> 27 PREVIOUS ASSESSMENT ACTIVITIES 5 <br /> 30 ADDITIONAL SOIL ASSESSMENT ACTIVITIES—MARCH 2006 8 <br /> 31 UNDERGROUND UTILITY/CONDUIT SURVEY g <br /> 32 DRILLING ACTIVITIES 8 <br /> 32 1 Project Coordination 8 <br /> 3 2 2 Health and Safety Meeting 8 <br /> 3 2 3 Cone-Penetrometer Soil Sampling 9 <br /> 3 2 4 Soil Sample Laboratory Analysis 9 <br /> 3 2 5 Soil Sample Analytical Results 9 <br /> 3 2 6 Findings 10 <br /> • 40 ADDITIONAL GROUNDWATER ASSESSMENT ACTIVITES—MARCH 2006. 11 <br /> 41 GROUNDWATER WELL INSTALLATION—MARCH 2006 11 <br /> 42 TOP OF CASING WELL SURVEY 12 <br /> 43 WELL DEVELOPMENT ACTIVITIES 12 <br /> 44 GROUNDWATER MONITORING AND SAMPLING—SEPTEMBER 2006 12 <br /> 4 4 1 Groundwater Measurements 12 <br /> 442 Groundwater Sampling 13 <br /> 443 Groundwater Sample Analysis 14 <br /> 444 Groundwater Analytical Results 14 <br /> 445 Investigative Derived Waste Disposal 15 <br /> 446 Findings 16 <br /> 5.0 REMEDIAL FEASIBILITY TESTING—NOVEMBER 2002 . ............. ....... 18 <br /> 51 AIR SPARGE TEST RESULTS 18 <br /> 52 VAPOR EXTRACTION TEST RESULTS is <br /> 52 1 Mass Extraction Estimates 19 <br /> 53 AQUIFER PUMP TEST RESULTS 19 <br /> 5 3 1 MW-6C Pump Test Results 20 <br /> 5 3 2 MW-3C Pump Test Results 20 <br /> 5 3 3 Pump Test Conclusion 20 <br /> 54 BIOFEASIBILITY LABORATORY RESULTS 21 <br /> 6.0 CONCLUSIONS . ..... .... ........ .. . .. ........ .. .... .... . ... . ...... ..... ..... 22 <br /> • 70 PLANNED ACTIVITIES.. .... ...... . . ...... . ..... .... ... .......... ........ .... .. .. ... .. . . .24 <br /> ill <br />