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t <br /> Contents <br /> Page <br /> ExecutiveSummary .................................................................................................................i <br /> Certification................... <br /> .........................................................................................................iiiiii <br /> 1. Introduction........................................................................................................................ 1 <br /> 1.1 Report Purpose and Conclusions............................................................................ 1 <br /> 1.2 Site Location .......................................................................................................... 1 <br /> 1.3 Background Summary............................................................................................ 3 <br /> 1.4 Site Conditions.......................................................................................................4 <br /> 2. Administrative Activities...................................................................................................5 <br /> 2.1 CIWMB Approval.................................................................................................. 5 <br /> 2.2 Reviewing Agencies........................................................................... <br /> .................... <br /> 2.3 California Environmental Quality Act (CEQA)..................................................... 6 <br /> 2.4 Site Access ............................................................................................................. 6 <br /> 2.5 Permits.................................................................................................................... 6 <br /> 3. Remediation Project...........................................................................................................9 <br /> 3.1 Planned Scope of Work..........................................................................................9 <br /> 3.1.1 Engineering Consultant Responsibilities, CH2M HILL .........................9 <br /> 3.1.2 Remediation Contractor Responsibilities, Sukut Construction <br /> Company ...........................................................................................................9 <br /> 3.1.3 Project Organization and Participants................................................... 10 <br /> 3.2 Remediation Activities......................................................................................... 11 <br /> 3.2.1 Weekly Project Status ........................................................................... 12 <br /> 3.2.2 Final Inspection..................................................................................... 16 <br /> 3.2.3 Ash Contamination................................................................................ 16 <br /> 3.2.4 Stained Material.................................................................................... 17 <br /> 3.2.5 Pyrolytic Oil Contamination ................................................................. 17 <br /> 3.3 Field Modifications..............................................................................................20 <br /> 3.3.1 Clay Plug Design...................................................................................20 <br /> 3.3.2 Cover Design.........................................................................................20 <br /> 3.4 Site Assessment....................................................................................................22 <br /> 3.4.1 Sampling Procedures.............................................................................23 <br /> 3.4.2 Sampling and Analysis..........................................................................23 <br /> 3.4.3 Analytical Results.................................................................................. 27 <br /> 3.4.5 Conclusions........................................................................................... 31 <br /> 3.4.6 Sampling Recommendations.................................................................32 <br /> 3.5 Known Hazards.................................................................................................... 33 <br /> CIWMB iv <br />