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Ms. Victoria McCartney Page 6 <br /> ' San Joaquin County Environmental Health Department <br /> ARCO 5450 <br /> December 22, 2005 <br /> If you have any questions or comments regardingthis letter, lease call Mr. Vernon Elarth at (916) <br /> p <br /> 679-2299. <br /> Sincerely, <br /> URS Corporation Americas S���tED G, D <br /> 4AUt��9 :,A <br /> '000� No. 7 20 <br /> * Exp. 1 3 Q <br /> G' a Lee Vernon Elarth, R.G. <br /> Staff Geologist Project Manager ��q�OF CA1-�F���\� <br /> Enclosures: <br /> Table I Groundwater Elevation and Analytical Data <br /> Table 2 Groundwater Gradient Data <br /> Table 3 Fuel Oxygenates Analytical Data <br /> Figure I Site Location Map with Well Locations <br /> Figure 2 Groundwater Analytical Summary <br /> Attachment A SJCEHD Correspondence <br /> Attachment B Boring Logs and Geologic Cross-Section <br /> Attachment C 1999 Site Investigation Data <br /> Attachment D 2002 Site Investigation Data <br /> Attachment E Contaminant Mass Calculations <br /> Attachment F Future Impact on Groundwater Calculations <br /> Attachment G RWQCB Checklist for No Further Action at UST Sites <br /> cc: Mr. Paul Supple, Atlantic Richfield Company <br /> Mr.James Barton,Regional Water Quality Control Board-Central Valley Region <br /> Project File <br /> 1 K:MprocessU5 BP ARCO%054501SoiI Closure 051thuft of 5450 Closure Report.doc <br />