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' GERAGHTY & MILLER, INC 8 <br /> If you have any questions regarding this report or need further information, please do not <br /> hesitate to call us at(510) 233-3200 <br /> Sincerely, <br /> GERAGHTY & MILLER, INC <br /> Aaron O'Brien <br /> ' Staff Engmeer/Project ager <br /> All <br /> Kent O'Brien s� <br /> Project <br /> dentist 1 O. 3-; <br /> tKe <br /> zes ��� WA' '�� �, N <br /> ' <br /> Principal Engineer/Associate <br /> San Francisco Regional Manager <br /> Attachments References <br /> Table 1 Historical Soil Sample Analytical Results <br /> Figure 1 Site Location Map <br /> Figure 2 Maximum Concentrations of Petroleum Hydrocarbons in Soil <br /> ' Figure 3 Petroleum Hydrocarbons in Groundwater(May 1997) <br /> Attachment 1 Assessment Activities <br /> ' Attachment 2 Boring Logs (Groundwater Technology, Inc. and Western <br /> Geologic Resources) <br /> Attachment 3 Cross Section (Groundwater Technology, Inc ) <br /> Attachment 4 Installation of Vertical Delineation Soil Boring <br /> ' Attachment 5 Assumptions and Calculations Used in Estimating Hydrocarbon <br /> Mass <br /> (Figure 5-1, Average Concentrations of TPH-G in Soil) <br /> ' Attachment 6 Summary of Vacuum-Influence Tests <br /> (Table 6-1, SVE System Influence Data) <br /> ' cc Brett Hunter,Chevron Products Company <br /> Elizabeth Thayer, RWQCB —Central Valley Region <br /> Paul Supple, ARCO Products Company <br /> Steve Misner,Brown &Caldwell <br /> • <br /> Project No RC0309 010 <br /> 1 Q9 <br />