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11Ca <br /> A S S O C I A T E S I N C <br /> TABLE OF CONTENTS <br /> CONTENT PAGE <br /> 10 INTRODUCTION.... .........1 <br /> 11 Site Location 1 <br /> 12 Background 1 <br />' 2.0 FOURTH QUARTER 1999 MONITORING AND SAMPLING.... .. ................ ...... .2 <br /> 21 Sampling Activities 2 <br /> 22 Analytical Results 3 <br /> 23 Groundwater Flow Direction 3 <br /> 3.0 PUMPING TEST METHODS AND PROCEDURES ................................................ ..3 <br /> 31 Aquifer Pumping Test 4 <br /> 32 Analysis of Aquifer Test Data 4 <br /> 3 3 Analysis of Aquifer Test Data Using AQTESOLV m 4 <br /> 34 Radius of Influence of Aquifer Test 5 <br /> 3 5 Groundwater Sampling and Analysis 5 <br /> 4.0 SUBSURFACE CONDITIONS. ... .. .... . ......................................... .. .... ..... .. .... ... ...6 <br /> 41 Geology 6 <br /> 42 Hydrogeology 6 <br /> 50 ANALYTICAL RESULTS. ... . .. ....... ... ............................. .... ......... ...........................6 <br /> 60 DISCUSSION.... .. .. <br /> 7.0 REMEDIAL ALTERNATIVES.......................................... .. .................. . . ... ...........7 <br /> 71 Natural Attenuation with Groundwater Monitoring 8 <br /> 72 Groundwater Extraction and Treatment 8 <br /> 73 In-Situ Air Sparging with Soil Vapor Extraction 8 <br /> 8.0 REMEDIATION ALTERNATIVES EVALUATION.................... ... .. . ........... ... ...... ..9 <br /> 81 Alternative 1 -Natural Attenuation with Groundwater Monitoring 9 <br /> 82 Alternative 2 - Groundwater Extraction and Treatment 11 <br /> 83 Alternative 3 - Soil Vapor Extraction with Groundwater Monitoring 12 <br /> . <br /> 90 RECOMMENDATIONS .. ....... ... .. .... . ..... ................ ............. .................................13 <br />' 10.0 REFERENCES. ....... ................ ....... .. ... .................... . ...... .... ..................... ..............14 <br />