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�.l <br /> Aquifer Pump Test Report of Findings <br /> Frontier Transportation, Inc. <br /> November 8, 2006 <br /> Page 5 <br /> also analyzed for the following physical parameters: permeability, moisture content, dry density, <br /> specific gravity, porosity and TOC. <br /> Laboratory analysis results identified MTBE in a total of six soil samples out of the eight <br /> samples analyzed. MTBE was identified in the shallow soil from 10 ' to 20' bgs, with a maximum of <br /> 33 .7 mg/kg (MW-22 @ 10 ') . No MTBE was detected at 5 ' bgs. MTBE attenuated vertically in both <br /> wells. No other oxygenates were detected in any ofthe samples. See Table Abelow for Soil Sample <br /> Results and Appendix B for Laboratory Analytical Reports. <br /> TPH-gas was detected in three samples, with only two elevated levels at 10' bgs. MW-22 and <br /> MW-23 identified TPH-g at 1260 mg/kg and 759 mg/kg, respectively. Low levels to non-detectable <br /> concentrations of BTEX were identified, with the exception of elevated levels at 10 ' bgs. TBA, <br /> DIPS, ETBE, TAME 1 ,2-DCA and EDB were not identified in any of the 8 soil samples collected <br /> and analyzed. <br /> Table A. Soil sample results for September 2006 using EPA Methods 8015 and 8260 (mg <br /> /kg) <br /> Well ID Sample TPH-g Benzene Toluene Ethylbenzene Xylenes MTBE <br /> Depth (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) <br /> MW-22 5 <0. 5 <0. 002 <0.002 <0.002 <0.004 <0. 005 <br /> 10 1260 8.86 1.31 12.6 78.9 33.7 <br /> 15 <0 .5 <0. 002 <0.002 <0. 002 <0. 004 0.009 <br /> 20 <0.5 <0.002 <0.002 <0 .002 0.006 0.009 <br /> MW-23 5 <0.5 <0.002 <0. 002 <0 .002 <0 .004 <0. 005 <br /> 10 759 1.55 0.195 16.4 1.22 2.01 <br /> 15 <0. 5 0.003 <0.002 0.009 0.006 0.069 <br /> 20 1 .9 0.013 <0.002 0.057 0.039 0.014 <br /> Groundwater monitoring for the 2006 3" quarter identified dissolved TPH-gas, BTEX, <br /> MTBE, ETBE and TAME in both MW-22 and MW-23 . See Table 1 for complete historical <br /> groundwater monitoring results. <br /> In addition to contaminant analysis, the soil samples collected from MW-23 were analyzed for <br /> physical properties. The average bulk density for the soil in MW-23 was identified at 1 . 51 g/cc and <br /> the average grain density was 2 .71 g/cc. Total porosity was between 42. 1 % and 46.7%, averaging <br />