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CLEAW'!:2AVER <br />' G R O U P <br /> �J Environmental Services <br /> I <br /> TABLE OF CONTENTS <br />' 10 INTRODUCTION 1 <br /> 1 1 Purpose and Scope 1 <br />' <br /> 12 Site Descnption 1 <br /> 13 Previous Investigations 2 <br />' <br /> 20 RECENT GROUNDWATER MONITORING 4 <br /> 21 Purpose 4 <br /> 2 2 Groundwater Monitoring Activities 4 <br />' 2 3 Monitored Natural Attenuation 6 <br /> 30 SUMMARY OF HYDROGEOLGY AND CONTAMINATION 13 <br />' 31 Hydrogeology 13 <br /> 3 2 Contaminants of Concern 14 <br /> 3 3 Sorbed-Phase Contamination 14 <br /> 3 4 Dissolved-Phase Contamination 15 <br /> 40 SENSITIVE RECEPTOR SURVEY 16 <br />' 41 Buildings 16 <br /> 4 2 Nearby Production Wells 16 <br /> I4 3 Nearby Surface Water Bodies 16 <br /> 50 CLEAN-UP GOALS 16 <br /> 60 PROPOSED REMEDIAL ACTION PLAN 19 <br /> 61 Remedial Action Plan Preparation 19 <br />' <br /> 62 Purpose and Scope 19 <br /> 63 Enhanced Bioremediation by iSOC Submerged Oxygen-Infusion 19 <br /> 64 Overview of iSOC Technology 20 <br /> 65 Injection Well Installation 21 <br /> 66 Deployment of 1SOC Components 22 <br /> 67 1SOC System Operations &Maintenance 22 <br /> • <br /> I <br /> ZB178C 1i May 21,2004 <br />