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enviros® <br /> below Laboratory analytical data for FOC, porosity, and permeability are presented in <br /> Appendix B <br /> Northwestern Dispenser/UST Area <br /> Soil Boring SBA was drilled to determine the vertical extent of petroleum hydrocarbons <br /> previously detected in this area identified in samples WE14 and PL-12 Soil samples <br /> collected from SB-1 at the depths of 18 and 30 fbg contained non-detectable (ND) <br /> concentrations of TPPH and benzene <br /> Soil Borings SB-2, SB-3, and SB-4 were drilled to determine the lateral extent of <br /> petroleum hydrocarbons in the soil in this area identified in samples WE14 and PL-12 <br /> Soil samples collected from SB-2 at the depths of 9 and 21 fbg contained ND <br /> concentrations of TPPH and benzene Soil samples from 9 fbg in Boring SB-3 contained <br /> 770 ppm TPPH and were ND for benzene PID readings from Boring SB-3 indicated the <br /> presence of petroleum hydrocarbons in the soil at 9 fbg, so Boring SB-4 was drilled further <br /> northwest of the dispenser Soil samples collected from Boring SB-4 were collected at <br /> 8 5, 25, and 37 fbg and contained levels of TPPH ranging from 3 5 to 5 4 ppm, and <br /> benzene ranging from 0 008 to 0 026 ppm <br /> Southeastern Dispenser Area <br /> Soil Boring SB-10 was drilled to determine the vertical extent of petroleum hydrocarbons <br /> . previously detected in this area identified in sample PL-9 Soil samples collected from <br /> SB-10 at 12 and 16 fbg contained TPPH concentrations of 170 ppm and ND, respectively, <br /> and were ND for benzene <br /> The sample from SB-10 at 12 fbg was also analyzed for TPPH and BTEX by the TCLP <br /> method This analysis identified 5 ppm TPPH and was ND for benzene <br /> Soil Borings SB-5 through SB-9 were drilled to delineate the lateral extent of petroleum <br /> hydrocarbons in this area <br /> Soil samples collected from 8 and 24 fbg in SB-5 were ND for TPPH and benzene Soil <br /> samples collected from 8 and 20 fbg in SB-6 were ND for TPPH and benzene One soil <br /> sample collected at 8 fbg from SB-7 was ND for TPPH and benzene No soil samples <br /> were analyzed from Soil Boring SB-8 because of poor sample recovery Soil samples <br /> collected from 10 and 22 fbg in SB-9 were ND for TPPH and benzene <br /> 3.3 Soil Physical Parameters Analysis <br /> Two soil samples were submitted to Core Laboratories, Inc , for porosity and permeability <br /> to air (permeability) analysis The soil sample from Boring SB-1 at 18 fbg was found to <br /> have an effective porosity of 0 25 % and a permeability of 31 meters per day The soil <br /> sample from Boring SB-10 at 12 fbg was found to have an effective porosity of 0 38% and <br /> a permeability of 86 meters per day The laboratory reports for the physical parameter <br /> analysis are contained in Appendix B <br /> 372 3 <br />