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------------------------ Iml 07 April 2003 AGE-NC Prcjcct No, 97-0360 Page 3 of 4 . 1 concentration of 800 µg11. No other analytes were detected at-or above laboratory reporting limits in the ground water samples analyzed. The analytical results of ground water samples are summarized on Table 2. The laboratory report (CTEL Project No.. CT214-0211138), QA/QC report and chain-of-custody form are included mi Appendix C. 4.0. SUMMARY AND CONCLUSIONS Based on the data collected from the site, AGE concludes: -; Ground water flow at the site on 19 November 2002 was inferred to be toward the north at a gradient of 0.002 feet/feet. The gradient and direction has remained stable for the previous' three quarters. 6)61 1iA; rJ i �'K +p, .. )n K4 o re riz.ci`; rel f? Sf4 yr�C TPH-g concentrations decreased in well EW1 this quarter when compared to last quarter 4---p(o. while the TPH-d concentration increased in this well.No other hydrocarbon compounds or TPH -d, fuel oxygenates were detected this quarter,similar to previous monitoring events (Table 2). Je TPO • With the exception of TPH-d the lateral extent of petroleum hydrocarbon-impacted ground Fw I water has been defined in all�irections. TPH-d is not defined east of the former UST area. �`� A map illustrating the approximate extent of dissolved TPH-g and TPH-d is presented in Figure 4. • The vertical extent of hydrocarbons-impacted ground water has been defined and does not extend below 35 feet bsg. :y 5.0. RECOMMENDATIONS Based on the findings of the environmental activities recounted in this report, AGE recommends continued quarterly ground water monitoring. The next monitoring event is scheduled to be 3 performed in March 2003. 6.0. LIMITATIONS Our professional services were performed using that degree of care and skill ordinarily exercised by environmental consultants practicing in this or similar localities. The findings were based upon analytical results provided by an independent laboratory.Evaluation ofthe hydrogeologic conditions - at the site for the purpose of this investigation was made from a limited number of available data j Advanced GeaEnviironmental,Inc.