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Mr Harlin Knoll <br /> Page 2 of 2 <br /> ANALYTICAL RESULTS <br /> Well MW5 contained TPHg at a concentration of 50,000 ppb, benzene at 1,900 ppb, toluene at 2,000 ppb, <br /> ethylbenzene at 2,500 ppb, and xylenes at 15,000 ppb No groundwater samples were taken from the other <br /> site wells Analytical results are summarized in Table 3 Laboratory data sheets and chain of custody <br /> documentation are included in Attachment B Attachment C contains a graphical representation of TPI-Ig <br /> and benzene concentrations over time in well MW5 The chart shows an overall decreasing trend of <br /> contaminants since historic high levels were detected in December 1996 <br /> Please contact John Lane at(209) 838-9888 if you have any questions or comments regarding this report <br /> Respectfully, <br /> Ground Zero Analysis,Inc <br /> P <br /> Joseph L Vasquez �C <br /> Staff Geologist to, <br /> J4— * No 6795 <br /> John P Lane CAi.► <br /> CA Registered Geologist 6795 <br /> Attachments <br /> cc Mr James L L Barton, CRWQCB <br /> Mr Carl Knowles <br /> Mr Patrick D Riddle, Attorney at Law <br /> 0\GROUNDZESKNOWLES HAM\REPORTS\QMR\200514QM2005 doc <br />