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g <br /> 3• <br /> } <br /> (TPPH) as gasoline by EPA Method 8015 (modified), and benzene, <br /> toluene, ethylbenzene and xylenes (BTEX) by EPA Method 8020; <br /> and for the fuel oxygenates ethanol; tertiary-butanol; methyl <br /> tertiary-butyl ether (MTBE); di-isopropyl ether (DIPE); ethyl <br /> tertiary-butyl ether (ETBE); and tertiary-amyl methyl ether (TAME) <br /> by EPA Method 8260. <br /> Soil Disposal: Approximately 1/2 yard of soil was generated during field activities. <br /> This soil was profiled for disposal and hauled to Forward Landfill by <br /> Manly and Sons Trucking on November 26, 1997. <br /> I <br /> Backfill Method. Boring locations were backfilled with cement grout to the surface. <br /> INVESTIGATION RESULTS <br /> Soil samples from Borings SB-1 collected at the depths of 24 and 31.5 fbg did not contain detectable <br /> levels of petroleum hydrocarbons. Soil samples collected from Boring SB-2 at the depths of 32 and <br /> 35.5 fbg contained TPPH at concentrations of 47 and 5,700 ppm, respectively. Neither boring <br /> contained detectable levels of benzene or fuel oxygenate compounds. The soil chemical analytical <br /> data summarized in Table 2 and presented on Plate 2. <br /> Analytical results for soil samples collected from the northwest corner of the former tank complex <br /> indicate petroleum hydrocarbons are not present in soil at a depth greater than 24 fbg. Soil samples <br /> f collected from SB-2 near the northern fuel dispenser island indicate petroleum hydrocarbons are <br /> present at the maximum depth explored (35.5 fbg) during this investigation. <br /> € If you have any questions regarding the contents of this document, please call. <br /> Sincerely, <br /> j <br /> 5Camb is Environmental Technology, Inc. <br /> I <br /> i Tom Magney <br /> I Project Geol�ooggist e OF�SSI(J h, <br /> a w g <br /> i Cr- o —+ x <br /> Diane M. Lundquist, P. N0. 046725 <br /> f Senior Engineer <br /> t C46725 sT�TfCMIOF OF��\� <br /> 370 3 . <br /> 1 <br />