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11 June 2004 AGE-NC Project No. 04-1170 Page 4 of 5 4.0. FINDINGS The stratigraphy and ground water hydrogeology underlying the site was characterized from the field descriptions. Hydrocarbon impact to the soil and ground water was assessed by laboratory analysis. 4.1. STRATIGRAPHY In general,orange brown clayey silt to silty clays were encountered from surface grade to 20 feet bsg; grey silty fine sand to sandy silt was encountered from 20 to 30 feet bsg; and silty clay was encountered from 30 to 35 feet bsg. Samples were moist to saturated starting at 25 feet bsg and in general, had low plasticity,toughness and consistency. Field observations did not detect petroleum hydrocarbon-like odor in any of the soil samples collected, or the presence of volatile organic compounds utilizing the OVM. A total of 27 soil samples and 3 grab ground water samples were submitted to CTEL. The 15 foot bsg samples from borings B2, B3 and B4, the 20 foot bsg sample from B 1 and the ground water samples were analyzed for the target analytes noted above;none of the target analytes were detected in the analyzed samples. The analytical results are summarized in Tables 1 and 2. A copy of the laboratory report(CTEL Laboratory Project Number CT214-0406073) is included in Appendix A. 5.0. SUMMARY AND CONCLUSIONS Based on the data collected from the site in this and the previous investigation, AGE finds: • Orange brown clayey silt to silty clays were encountered from surface grade to 20 feet bsg; grey silty fine sand to sandy silt was encountered from 20 to 30 feet bsg; and silty clay was encountered from 30 to 35 feet bsg. Ground water occurred at approximately 25 to 30 feet bsg during the June 2004 boring event. • No target analytes were detected at or above laboratory detection limits in either the soil or "grab"ground water samples analyzed. This data suggests that the former utilization of the site as a gasoline fueling facility has not impacted the subsurface in the areas sampled. 6.0. RECOMMENDATION Based on the findings of the environmental activities recounted in this report and the non-detectable concentrations of all target analytes, AGE recommends that no further action be taken at the site. Advanced GeoEnvironmental,Inc.