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10 December 2002 <br /> AGE-NC Project No 97-0326 <br />' Page 3 of 4 <br />' 32 ANALYTICAL RESULTS OF WATER SAMPLES <br /> TPH-g was detected in samples collected from MW I, MW2 and MW3 at concentrations of 54,000 <br />' micrograms per liter (µg/1), 65,000 µg/l and 88,000 µg/l, respectively <br /> BTEX compounds were detected in all of the wells sampled Benzene was detected in samples from <br />' MW 1, MW2 and MW3 at concentrations of 2,100 µg/1, 11,000 µg/1 and 11,000 µg/1, respectively <br /> Toluene,ethylbenzene and xylenes were detected at maximum concentrations of 9,000µg/1(MW 1), <br /> 4,900 µg/1 (MW2) and 16,200 µg/1 (MW2), respectively <br />' MTBE was detected in the ground water samples from MW1 and MW2, at concentrations of <br /> 220 µg/1 and 290 µg/l, respectively by EPA Method 8260B No other fuel additives were detected <br /> at or above laboratory detection limits in the samples analyzed <br /> Analytical results of the ground water samples for the October 2002 monitoring event are <br />' summarized on Table 2 The laboratory report(CTEL Project No CT214-0210083), QA/QC report <br /> and chain-of-custody form are included in Appendix B <br /> 1 • <br /> 4 0. SUMMARY AND CONCLUSIONS <br /> Based on the data collected from the site, AGE finds <br /> * The inferred ground water flow direction at the site has been dominantly toward the south- <br /> southeast during the thirteen monitoring events conducted to date, although the historical <br /> ground water flow direction at the adjacent site to the east(USA),and at the Morita Brothers <br /> site at the southeast corner of East Charter Way and Grant Street, has been toward the east <br />' or northeast <br /> • High concentrations of petroleum hydrocarbons were detected in ground water samples <br /> collected from all three monitoring wells on the site(see Figures 3 to 5) BTEX compounds <br /> and MTBE are at concentrations exceeding California's Maximum Contaminant Levels for <br /> these products In drinking water <br />' • Neither the vertical nor horizontal extent of impacted ground water has been delineated at <br /> the site <br /> 1 <br /> 1 <br />' Advanced GcoEnvirenmentai,Inc <br />