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Mr Harlin Knoll <br /> Page 2 of 2 <br /> ANALYTICAL RESULTS <br /> Well MW5 contained TPHg at a concentration of 45,000 ppb, benzene at 980 ppb, toluene at 1,100 ppb, <br /> ethylbenzene at 2,600 ppb, and xylenes at 15,000 ppb No groundwater samples were collected from the <br /> other site wells Analytical results are summarized in Table 3 Laboratory data sheets and chain of <br /> custody documentation are included in Attachment B Attachment contains a graphical representation of <br /> TPHg and benzene concentrations over time in well MW5 The chart shows an overall decreasing trend of <br /> contaminant concentrations 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 /> Joseph L Vasquez cS��NAL GF <br /> Staff Geologist <br /> a No <br /> John P Lane <br /> CA Registered Geologist 6795 4F�pLl <br /> Attachments <br /> cc Mr James L L Barton, CRWQCB <br /> Mr Carl Knowles <br /> Mr John D Dunlap III <br /> G 1GROUNDZESKNOWLES HAMIREPORTSIQMR1200611QM2006 doe <br />