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3.1 SOIL SAMPLING <br />E <br />A total of 6 soil borings (SB -1 through SB -6) were driven on 3 December 2009, with a <br />truck mounted mobile Geoprobe® boring rig using nominal 2 -inch outside diameter <br />Geoprobe® casing rods. The soil sampler was driven using a hydraulically actuated <br />Geoprobe® sample rod with a 48 -inch acetate sampling tube inserted within the casing rod. <br />Soil borings were continuously cored when capable. Soil boring SB -1 was advanced to a <br />total depth of 23 below ground surface (BGS), borings SB -2 and SB -3 were advanced to a <br />total depth of 12 feet BGS, boring SB -4 was advanced to a total depth of 16 feet BGS, <br />boring SB -5 was advanced to a total depth of 21 feet BGS, and boring SB -6 was advanced <br />to a total depth of 16 feet BGS. A portion (approximately 2 -inch section) of each sample <br />recovered was field screened with a photoionization detector (PID). Soil samples SB -1 at <br />12, 16, 19, and 23 feet BGS and SB -6 at 12 and 16 feet BGS resulted in an elevated PID <br />reading. See Figure 3 for boring logs. <br />Soil samples chosen for laboratory analytical submission were trimmed flush with the end <br />of the sleeve, the ends covered with Teflon"" film, and then sealed with plastic end caps. <br />Each sample was labeled and placed into a pre -cooled ice chest at a temperature of <br />approximately 4°C during transportation to the laboratory. Proper chain -of -custody <br />protocol was followed at all times. <br />4.0 CHEMICAL ANALYSIS <br />A total of 10 soil samples were submitted for chemical analysis. Each soil sample was <br />analyzed for total petroleum hydrocarbons as gasoline (TPH-g), total petroleum <br />hydrocarbons as kerosene (TPH-k), and total petroleum hydrocarbons as diesel (TPH-d) <br />by Environmental Protection Agency (EPA) Method 801513, benzene, toluene, <br />ethylbenzene and xylenes (BTEX) compounds by EPA Method SW802113. The fuel <br />oxygenates tert-butyl alcohol (TBA), methyl tert-butyl ether (MTBE), di -isopropyl ether <br />(RIPE), ethyl tert-butyl ether (ETBE), tert-amyl methyl ether (TAME), and 1, 2 <br />Dichloroethane and 1, 2 Dibromoethane were analyzed by EPA Method 8260B. Total <br />lead was analyzed by EPA Method 601013. <br />4.1 ANALYTICAL RESULTS <br />Analytical results revealed soil samples collected from boring locations SB -1 and SB -6 <br />contained elevated levels of TPH-k. Soil sample SB -1 at 12, 19, and 23 feet resulted in <br />concentrations of TPH-k at 0.9 mg/kg, 26 mg/kg, and 1300 mg/kg respectively. Soil <br />sample SB -6 at 12 and 16 feet resulted in concentrations of TPH-k at 0.33 mg/kg and 120 <br />mg/kg respectively. All other soil samples were reported with concentrations of <br />contaminants of concern below their respective detection limits. See Table 1 for soil <br />sample analytical results. The certified laboratory reports can be found in Appendix A. <br />12/22/2009 HANOVER ENVIRONMENTAL SERVICES, INC. 4 <br />Soil Assessment Report <br />McHenry Ave Project <br />1303 First Street, Escalon <br />