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6 July 1999 <br /> AGE-NC Project No. 99-0616 <br /> ' Page 4 of 5 <br /> duplicates were visually described in accordance with the Unified Soil Classification System <br /> ' (USCS). Boring logs are included in Appendix A. <br /> 3.5. EQUIPMENT DECONTAMINATION <br /> All sampling tools and brass sleeves used for sample collection were thoroughly rinsed with clean <br /> water after washing with a solution of Alconox. <br /> 4.0. FINDINGS <br /> ' Subsurface soil compositions were determined by field descriptions and hydrocarbon-impact was <br /> inferred from the laboratory data. <br /> ' 4.1 SOIL PROFILE <br /> A brown to dark brown, silt was encountered from surface grade to depths of approximately 20 feet <br /> bsg.A brown, silty,fine sand was encountered at depths of 25 feet bsg. The 30-foot sample consisted <br /> ' of a slightly clayey, brown silt <br /> ' 4.2 ANALYTICAL RESULTS OF SOIL SAMPLES <br /> A total of three soil samples were analyzed. No detectable concentrations of any of the analytes <br /> ' were encountered in any of the samples collected. Analytical results of soil samples are summarized <br /> in Table 1 and 2.The laboratory report(Precision Enviro-Tech PE5379-01, PE5411-01 and PE5411- <br /> ' 02) and chain-of-custody are included in Appendix B. <br /> ' 5.0. SUMMARY/CONCLUSIONS <br /> Based upon data collected on 15 and 18 June 1999, AGE concludes that the soil has not been <br /> ' impacted by petroleum hydrocarbons. <br /> 1 <br /> ' Advanced GeoEnvironmental, Inc. <br />