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r • <br /> 20 August 2002 <br /> AGE-NC Prof ect No 01-0827 <br /> Page 2 of 5 <br /> total lead at 245 mg/kg in one soil sample collected at a depth of four feet below surface <br /> grade (bsg) from the southwestern-most fuel dispersion device (burn-area) <br /> TPH-d and/or TPH-mo were detected in remaining soil samples at low concentrations <br /> On 08 and 15 July 2002, a total of five soil borings were advanced at the site Based on the soil and <br /> ground water data collected, AGE concluded <br /> Silt and clay with a tan or gray color, apparently depending on hydrocarbon impact, was <br /> encountered from a depth of approximately 5 feet to 28 feet bsg Gray to tan sand with gravel <br /> was present at depths of 28 feet to 30 feet bsg Silt and clay was encountered again at depths <br /> of 30 feet to 50 feet bsg A stratigraphic cross section is depicted in Figure 3 <br /> The maximum hydrocarbon concentrations in soil were detected in the area of the former <br /> burn pit area,sample#2 south The maximum concentrations of TPH and BTEX compounds <br /> were detected in samples collected above 20 feet bsg <br /> Approximately 311 kg of diesel and 509 kg of fuel oil remain in the soil at the site, to an <br /> • approximate depth of 20 feet bsg <br /> The vertical and lateral extent of the impacted soil were delineated by the soil samples <br /> analyzed <br /> Ground water was encountered at a depth of 30 feet bsg during drilling Ground water <br /> samples were not impacted by hydrocarbons <br /> 3.0. SCOPE OF WORK <br /> The proposed scope of work will include the following tasks <br /> Planning and pre-field work activities <br /> Soil excavation and sample collection/analysis <br /> Excavation backfilling <br /> Soil disposal <br /> Report preparation <br /> Advanced GeoEnvuem ental Inc <br />