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DRYWELL CLOSURE AND INVESTIGATION WORK PLAN <br /> ' NEIL O. ANDERSON &ASSOCIATES <br /> TABLE OF CONTENTS <br /> ' EXECUTIVE SUMMARY.................................................................................................. 1 <br /> 1.0 INTRODUCTION...................................................................................................2 <br /> 1.1 Purpose ............................................................................................................2 <br /> 1.2 Guidance Documents .........................................................................................2 <br /> t 2.0 BACKGROUND......................................................................................................2 <br /> 2.1 Site Location......................................................................................................2 <br /> 2.2 Site Description .................................................................................................2 <br /> 2.3 Facility History and Current Operations................................................................3 <br /> ' 2.4 Physical Setting .................................................................................................3 <br /> 2.5 Geologic Conditions............................................................................................3 <br /> ' 2.5.1 Regional Geology..........................................................................................3 <br /> 2.5.2 Site-Specific Geology.....................................................................................4 <br /> 2.6 Hydrogeologic Conditions ...................................................................................4 <br /> 2.6.1 Regional Hydrogeology .................................................................................4 <br /> ' 2.6.2 Site-Specific Hydrogeology............................................................................4 <br /> 3.0 SAMPLING AND ANALYSIS PLAN ...........................................................................5 <br /> ' 3.1 Sampling Objectives...........................................................................................5 <br /> 3.2 Sampling Locations and Depths ..........................................................................5 <br /> 3.2.1 Groundwater................................................................................................5 <br /> ' 3.2.2 Soil..............................................................................................................5 <br /> 3.3 Sampling Equipment and Collection Methods .......................................................6 <br /> ' 3.3.1 Groundwater................................................................................................6 <br /> 3.3.2 Soil..............................................................................................................7 <br /> ' 3.4 Equipment Decontamination...............................................................................8 <br /> 3.5 Sample Analysis.................................................................................................8 <br /> ' 3.5.1 Groundwater................................................................................................8 <br /> 3.5.2 Soil..............................................................................................................9 <br /> ' 3.6 Quality Control and Quality Assurance (QC/QA)....................................................9 <br /> 902 Industrial Way•Lodi,CA 95240•209.367.3701 •Fax 209.369.4228 02014 Neil O.Anderson&Associates,Inc <br />