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n <br /> 18 November 1996 <br /> AGE-NC-Project No 95-0134 <br /> Page 2of8 <br /> and 30 October 1988 prepared by GTI <br /> 2 2 1 HYDROCARBON-IMPACTED SOIL <br /> Total petroleum hydrocarbons as gasoline were detected in soil samples from MW-2 at <br /> Iconcentrations of up to 14,000 mg/kg(parts per million, ppm)by GTI Petroleum hydrocarbons were <br /> not detected in soil samples collected from the remaining six borings The assessment of <br /> hydrocarbon impacted soil indicated that vadose zone contamination was restricted to the area <br /> immediately below the foriner UST location Analytical results of soil samples are summarized on <br /> Table 4 <br /> 2 2 2 HYDROCARBON-IMPACTED GROUND WATER <br /> Free floating product was encountered in two monitoring wells, MW-1 and MW-2 Free product <br /> recovery was performed by representatives of Genova Bakery during the later portion of 1989 An <br /> apparently small volume of gasoline was recovered during that period The wells were reported to <br /> be dry in October of that year <br /> A water sample was collected from MW-3 by GTI on 15 March 1988 and analyzed for total <br /> petroleum hydrocarbon as gasoline(TPH-g), aromatic hydrocarbons(benzene,toluene,ethylbenzene <br /> and xylenes BTE&X), lead and ethylene dibromide (EDB) TPH-g, toluene, ethylbenzene and <br /> xylenes were detected in the sample at concentrations of 25 ppb, 1 0 ppb, 1 0 ppb and 4 0 ppb, <br /> respectively <br /> GTI collected water samples from monitoring wells MW-3 through MW-6 on 15 July 1988 and from <br /> MW-7 on 25 August 1988 Each sample was analyzed for TPH-g, BTE&X, lead and EDB TPH-g <br /> and toluene were detected in the sample collected from MW-4 at concentrations of 2 ppb and 2 ppb, <br /> respectively Lead was detected in the sample from MW-6 at a concentration of 0 078 ppb Other <br /> constituents were not detected during these sampling events Ground water was encountered at a <br /> depth of approximately 40 feet bsg during the July and August 1988 monitoring events <br /> Ground water flow direction was generally north to northeast with a gradient of approximately 0 004 <br /> ft/ft Ground water sampling procedures and findings through August 1988 were summarized GTI's <br /> report, Problein Assessment Report, dated 21 November 1988 Analytical results are summarized <br /> on Table 3 Due to a drop in ground water elevation at the site, no groundwater monitoring activities <br /> took place between October 1989 and August 1993 <br />