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16 October 2009 <br /> AGE-NC Project No. 09-1714 <br /> Page 5 of 5 <br /> A total of 20 soil samples were submitted to CTEL for analysis as noted above. Total petroleum <br /> hydrocarbons quantified as motor oil were reported in soil sample B18-2.5 at a low concentration <br /> of 82 milligrams per kilogram(mg/kg).This concentration is below the San Francisco Bay Regional <br /> Water Quality Control Board's Environmental Screen Level(ESL)for total petroleum hydrocarbons <br /> quantified as motor oil of 83 mg/kg. <br /> No other target analytes were reported in the analyzed soil samples. The analytical results are <br /> summarized in Table l.A copy of the laboratory report(CTEL 0909156)is included in Appendix B. <br /> RECOMMENDATIONS <br /> Based upon the results of this investigation, AGE recommends that no further environmental <br /> investigation is required.If additional environmental concerns are encountered in the future,please <br /> contact our office for further recommendations. <br /> LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> environmental consultants practicing in this or similar localities. The findings were based mainly <br /> upon analytical results provided by an independent laboratory. Evaluation of the <br /> geologic/hydrogeologic conditions at the site for the purpose of this investigation was made from <br /> a limited number of available data points (i.e. soiI samples) and subsurface conditions may vary <br /> away from these data points.No other warranty,expressed or implied,is made as to the professional <br /> interpetations, opinions and recommendations contained in this report. <br /> If you have any questions or require further information,please contact our office at(209)467-1006. <br /> Sincerely, <br /> Advanced GeoEnvironmental, Inc. o,s+�Ao�o <br /> No. 7473 <br /> Rebecca E.Nat William R. Little <br /> Staff Scientist Senior Project Geologist sT��OF c�%�w"p <br /> California Registered Geologls 7473 <br /> cc: Mr. Mike Infurna, San Joaquin County Environmental Health Department <br /> Advanced GeoEnvironmental,Inc. <br />