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' 15 November 2000 <br /> AGE-NC Project No 99-0570 <br />' Page 4 of 6 <br /> I3.0. FINDINGS <br /> Field data was utilized to select soil samples for laboratory analysis Petroleum hydrocarbon impact <br />' to saturated and unsaturated soil was assessed and quantified by laboratory analysis Laboratory <br /> analysis of eleven soil samples detected TPH-g, TPH-d or BTEX compounds in one soil sample <br />' Ground water elevation, flow direction and gradient were determined from field data collected on <br /> 03 October 2000, the contaminant impact to ground water was assessed from the laboratory data <br /> 31 STRATIGRAPHY <br />' In general, the soil profile consisted of brown dry clay from the surface to a depth of 10 feet bsg <br /> Poorly graded fine to medium sand was encountered below or at 10 feet in the borings Petroleum <br /> hydrocarbon odor or PID were not noted in the soil samples collected The PID data, where <br />' available, is included on the boring logs (Appendix A) <br /> 3 2 ANALYTICAL RESULTS OF SOIL SAMPLES <br />' TPH-g and BTEX compounds were detected in one soil sample TPH-g was only detected in sample <br /> MW2-15 at 170 milligrams per kilogram (mg/kg) BTEX was detected at concentrations up to 0 44 <br /> mg/kg TPH-d was detected to the same sample at a concentration of 170 mg/kg Several volatile <br /> organic compounds (VOCs) were detected in the same soil sample <br /> Oxygenated compounds or additives were not detected in any of the soil samples analyzed <br /> Analytical results of soil samples are summarized in Table 2 and Table 3 The laboratory reports <br /> (MAI Laboratory I D No 49308-49318), quality'assurance and quality control (QA/QC) reports and <br /> chain-of-custody forms are included in Appendix B <br /> 3 3 GROUND WATER ELEVATION AND GRADIENT <br /> The average relative ground water elevation on 03 November 2000 was approximately -9 feet with <br /> an average depth to water of 14 feet below well casing grade The top of the ground water table <br /> occurred within the screened intervals of the wells Ground water was inferred to be flowing to the <br /> north and northeast (Figure 3) with a significant hydraulic gradient of 0 025 feet/feet <br /> • <br /> Advanced CeoEnvironmental,Inc <br />