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Gerald,L. Thiemann -3- May 5,'2009 <br /> Claim No. 001978 <br /> I <br /> EXAMPLE OF CLOSURE REQUEST REPORT <br /> Y - Z; ,TABLE OF,=NTENTS <br /> !-.6---INTRODUCTION , <br /> 2.0 SITE BACKGROUND <br /> 2.1 Site Description <br /> 2.2 Regional Geology and Hydrogeology <br /> 2.3 Local Geology and Hydrogeology <br /> 2.4 Sensitive Receptor Surrey <br /> 2.5 Conduit Survey <br /> 3.0 PREVIOUS INVESTIGATIONS <br /> --_ _,_ ,_ - 4'.0 '"` YDROCARBON DISTRIBUTION <br /> 4.1 Hydrocarbon Distribution in Soil <br /> 4.2 Hydrocarbon Distribution in Groundwater <br /> 5.0 RISK ASSESSMENT <br /> 5.1 Tier 1 Risk.Evaluation <br /> 5.2 Conceptual Site Model <br /> 5.3 Results of Tier 1 Evaluation I <br /> 6.0 LOW RISK GROUNDWATER CASE CLOSURE <br /> 6.1 Leak Has Stopped - Ongoing Sources Removed <br /> 6.2 Site is Adequately Characterized <br /> 6.3 Dissolved Hydrocarbon Plume Is Not Migrating <br /> 6.4 Sensitive Receptors & Water Wells Not Likely to be Impacted <br /> 6.5 No Significant Risk to Human Health or Environment <br /> 7.0 CONCLUSIONS AND RECOMMENDATIONS <br /> FIGURES <br /> 1. Vicinity Map <br /> 2. Site Plan <br /> 3. Groundwater Elevation Contours <br /> -47-- 'Hydrocarbon Concentration'Contours <br /> 5. Trend Analysis.Graphs and Plots . <br /> 6. Conceptual Site Model Exposure Pathway <br /> TABLES <br /> 1. Groundwater Elevation and.Analytical Data p <br /> 2. Soil analytical Data <br /> 3. Monitoring Well Construction Details <br /> 4. 95% UCL Calculations <br /> APPENDICES <br /> A. Boring and Well Logs <br /> B. Sensitive Receptor Survey <br /> C. Trend Analysis Data l <br /> D. Closure Summary Form <br /> t <br /> California Environmental Protection Agency <br /> CoMecyded Paper - <br /> i <br />