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! r v <br /> 1 <br /> J <br /> l -• r n , ' 1 i ' , , 1 <br /> J ' <br /> . TABLE OF CONTENTS <br /> Page <br /> 1.0. - INTRODUCTION AND SCOPE OF WORK - 1 <br /> I20 BACKGROUND 1 <br /> 2 1 SITE LOCATION AND DESCRIPTION 1 - <br /> 2 2 UNDERGROUND STORAGE TANK REMOVAL 1 Y <br /> 2 3 REGIONAL GEOLOGICAL/HYDROGEOLOGICAL SETTING 2 <br /> 2 4 GROUND WATER DEPTH AND FLOW DIRECTION 3 ` <br /> 30. SUMMARY OF PRELIMINARY INVESTIGATION AND EVALUATION 3 <br /> 4.0 SOIL CHARACTERIZATION 5 <br /> 50 ASSESSMENT OF HYDROCARBON-IMPACTED SOIL 6 <br /> I6.0. ASSESSMENT OF HYDROCARBON-IMPACTED GROUND WATER 6 <br /> 70. SOIL REMEDIATION ALTERNATIVES 8 <br /> I <br /> 71 EX-SITU TREATMENT OF IMPACTED SOIL 8 <br /> 71 1 Excavation 8 <br /> 7 12 ,Feasibility of Excavation 8 <br /> I 7 13 Estimated Costs for Excavation 9ie ' <br /> 7 2 IN-SITU BIOREMEDIATION 9 <br /> 7 2 1 Pnnciples 9 <br /> 722 Nutrient Requirements and Toxicity 9 <br /> 7 2 3 Inoculation Wells 10 <br /> 7 2 4 Monitonng Activities 10 <br /> 7 2 5 Duration y 10 <br /> I712 6 Feasibility - I 11 <br /> 7 2 7 Estimated Costs for In-Situ Bioremediation 11 <br /> 7 3 NATURAL ATTENUATION 11 <br /> I7 3 1 Principles " ' 4 11 <br /> ti 7 3 2 Duration 12 <br /> 7 3 3 Feasibility 12 <br /> I 7 3 4 Estimated Cost " ' 12 <br /> 7 4 NO FURTHER ACTION 13 <br /> 8.0-- GROUND WATER REMEDIATION ALTERNATIVES 13 <br /> 81 GROUND WATER EXTRACTION 13 <br /> 8 1 1 Treatment,Methods 14 <br /> 8 1 2 Feasibility,Studies 14 _ <br /> 8 1 3 Duration r 15 <br /> 8'14 Cost 15 <br /> 8 2 IN--SITU BIOREMEDIATION/BIOENHANCEMENT 15 <br /> 8 2 1 Nutrient Requirements and Toxicity " 16 <br /> 8 2 2 Monitoring Activities _16 <br /> 8 2 3 Feasibility Studies 16 <br /> 8 2 4 Duration 16 <br /> Advanced GeoEnvironmental,Inc <br />