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1 <br />' 21 August 2000 <br /> iAGE-NC Project No 97-0343 <br /> Page 3 of 4 <br /> The analytical results of water samples collected in July 2000 are summarized on Table 2 The <br /> laboratory report (AAL Order No A00072609), QA/QC report and chain-of-custody form. are <br /> Included in Appendix B <br /> 4.0. SUMMARY AND CONCLUSIONS I <br /> IBased on the data collected from the site, AGE finds <br /> • Ground water flow at the site was determined to be toward the northeast with a nearly flat <br /> gradient of 0 001 feet/feet Ground water flow direction at the site has rotated approximately <br /> 180 degrees since the March 2000 molutoring event, however, this is likely due to the <br /> relatively flat ground water table Relative ground water elevations at the site decreased an <br /> average of 11 59 feet since the March 2000 monitoring event The significant fluctuation in <br /> ground water flow direction and relative ground water elevation at the site this quarter is <br />' potentially influenced by the nearby Stockton Diverting Canal <br /> • Concentrations of'I PH-g and BTh&X compounds significantly decreased since the March <br /> 2000 monitoring event Concentrations of TPH-d decreased in well MW 1 and increased <br /> I • slightly in wells MW2 and MW3 since the March 2000 monitoring event Fuel oxygenates <br /> were not detected in the ground water samples collected at the site <br /> 5.0. RECOMMENDATIONS <br /> Based on the findings of the environmental activities recounted in this report, AGE recommends <br /> g � , <br /> • Continued quarterly monitoring of the ground water monitoring wells on-site The next <br /> monitoring event should be performed in October 2000 <br /> • Installation of additional monitoring wells to define the lateral extent of impacted ground <br /> water <br /> 60. LIMITATIONS <br /> IOur 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 upon <br /> analytical results provided by an independent laboratory Evaluation of the hydrogeologic conditions <br /> • at the site for the purpose of this Investigation was made from a limited number of available data <br /> Advanced GeoEnvironmental,Inc <br />