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10 May 2000 <br /> AGE-NC Project No. 98-0460 <br /> Page 2 of 4 <br /> •r <br /> 2.2. LOGGING <br /> Soil was extruded from an unpreserved brass sleeve and screened for the presence of organic vapor <br /> using an organic vapor meter equipped with a photo-ionization detector (PID: MiniRae, calibrated <br /> to isobutylene). The organic vapor readings were then recorded on the boring logs. The soil was <br /> visually described in accordance with the Unified Soil Classification System and recorded (see <br /> .. Appendix A - Boring Logs). <br /> 2.3. LABORATORY ANALYSIS <br /> Selected soil samples were analyzed for: <br /> UW <br /> • Total petroleum hydrocarbons quantified as gasoline, diesel and motor oil (TPH-g, TPH-d <br /> and TPH-mo, respectively) in accordance with EPA Methods 5030A and 8015m; and <br /> • Volatile aromatic compounds; benzene, toluene, ethylbenzene and xylenes (BTEX) in <br /> accordance with EPA method 8020 or 8260. <br /> L. <br /> Six soil samples were also analyzed for: <br /> • Fuel oxygenates; di-isopropyl ether(DIPE), ethyl tert-butyl ether (ETBE), methyl tertiary- <br /> butyl ether(MTBE), tert-amyl methyl ether(TAME), and tert-butanol (TBA) in accordance <br /> with EPA Method 8260B. <br /> 3.0. FINDINGS <br /> The soil profile at the site was modeled from the field data; the hydrocarbon impact on soil was <br /> assessed by field indications and laboratory analyses. <br /> L <br /> 3.1. SOIL PROFILE <br /> �. Clay was encountered in the samples collected at a depth of 5 feet bsg in probing BI and B2, at a <br /> depth of 20 feet bsg in probing B1 and at a depth of 30 feet bsg in probings B2 and B3. Silty fine <br /> sand was encountered at a depth of 25 feet bsg in probing 133. Silt was encountered in the remaining <br /> �• samples frons all three borings (see Boring Logs, Appendix A). <br /> Organic vapor was detected in the samples collected from probing B1 at concentrations as high as <br /> Advanced Gee Environmental.Inc. <br /> i <br />