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S E C 0 R <br /> . Mr Jim Barton <br /> February 23, 2006 <br /> Page 6 <br /> RECOMMENDATIONS <br /> Observations assessed over the past four quarterly monitoring and sampling events <br /> indicate PCE in groundwater at the site has been erroneously quantified as TPHg TPHg, <br /> BTEX, and MtBE have only been periodically detected at low concentrations in groundwater <br /> samples, and practically absent in site soil samples The absence of TPHg, BTEX, and the <br /> common fuel oxygenates and additives indicate past or present site activities have had little <br /> impact on site soils and groundwater There appears to be no evidence that past or I <br /> present site activities have contributed to petroleum hydrocarbon impact to soil or <br /> groundwater beneath the site SECOR on behalf of EMC will submit a "No Further Action <br /> Request"for the site during the first quarter 2006, with the purpose of pursuing site closure <br /> LIMITATIONS <br /> This report is limited in scope and only addresses conditions that generally present a <br /> material risk of harm to public health or the environment, and that generally would be the <br /> subject of an enforcement action if brought to the attention of appropriate governmental <br /> . agencies The findings presented in this letter are based on data and interpretations <br /> provided by Gettler-Ryan, Inc Gettler-Ryan's report is included as Attachment A <br /> Therefore, the data obtained is clear and accurate only to the degree implied by the <br /> sources and methods used The information presented here is based on professional <br /> interpretation, using that level of care and skill normally exercised by members of the <br /> environmental science profession No other warranty, expressed or implied, is made by <br /> SECOR <br /> If you have any questions or comments regarding these activities, please contact Stephanie <br /> Furgal at (559) 271-2650, ext 234 <br /> Sincerely, <br /> SECOR International Incorporated <br /> l <br /> /amber L Schmall Frank Gegunde, P G <br /> Staff Scientist Associate Geologist �SS`DAAL <br /> o� Ci <br /> a FRANK GEGUNDE <br /> * No 7998 <br /> J, Exp rt m7 Q. <br /> 9Tf OF C Ax <br /> N 1F+Ies1Pro/ectslChevronlRetaiA#9-617i4Penodic Mond0r7ng1200514QMR14Q20050MR doc <br />