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L4LEEDSHILL HERKENHOFF INC <br /> Table of Contents <br /> Introduction Pg_ <br /> 1.1 Historical Review 1 <br /> Project Site Background <br /> 2.1 Site Information 3 <br /> 2.2 Previous Investigations 3 <br /> 2 3 Municipal Wells Within 1 Mile Radius 6 <br /> Site Investigation <br /> 3.1 Soil Sampling 8 <br /> 3.2 Monitoring Well Installations 9 <br /> 3.3 Groundwater Sampling 11 <br /> ' 3.4 Drum and Stockpile Sampling 11 <br /> 3.5 Geologic Cross-Sections 12 <br /> 3.6 Sample Analysis 12 <br /> j Results <br /> 4.1 Soil Sampling 16 <br /> 4.2 Groundwater Sampling 16 <br /> 4.3 Direction of Groundwater Flow 16 <br /> 4.4 Drum and Stockpile Sampling 20 <br /> Regulatory Guidelines <br /> 5.1 Evaluation of Soil 23 <br /> 5.2 Evaluation of Groundwater 24 <br /> 5.3 Evaluation of Excavated Soils 25 <br /> Findings and Conclusions 26 <br /> Recommendations 27 <br /> Figures <br /> 1 . Site Location 2 <br /> 2. Site Plan 4 <br /> 3 Local Municipal Wells 7 <br /> 4. Monitoring Well Installation 10 <br /> 5. Cross-Section A-A' 13 <br /> 6. Cross-Section B-B' 14 <br /> 7. Groundwater Contours 21 <br /> Appendices <br /> A. Boring Logs <br /> united Soil Classification System <br /> B. Laboratory Results <br /> Chain-of-Custody <br /> Laboratory DOHS Certification <br /> Cal Water Wells Water Quality <br /> Groundwater Sampling Data Sheets <br /> C. General Risk Appraisal <br /> Water Elevation Hydrographs <br /> Previous Ownership <br />