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lie Hydrocarbon-impacted water associated with the West UST was limited to vicinity of the former <br /> tank location, while diesel-impacted water was documented along the western edge of the property <br /> boundary <br /> 4n 01 December and 05 December 1997 a total of ten soil probe boring (P15 to P25) were <br /> ' established surrounding the East UST area Locations of the soil probe borings are illustrated on <br /> Figure 2 <br /> ' TPH-g,BTE&X were detected in soil samples collected from the probe boring advanced in the area <br /> of the East UST area at concentrations as high as 2,100 ppm and 14 ppm (xylene), respectively <br /> Hydrocarbon-impacted soil associated with the East UST area appeared to be limited to the former <br /> dispenser area(southern edge of Lindsay Street)and to a depth of sixteen to seventeen feet in depth, <br /> in the saturated soil below ground water <br /> ' TPH-g was detected in six of eleven grab ground water samples collected from the East UST area <br /> at concentrations ranging from 53 to 100,000 ppb BTE&X were detected In eight of eleven samples <br /> ' analyzed at concentrations ranging from 0 55 to 1,700 ppb <br /> ' January 1998 - Installation of Ground Water Monitoring Wells <br /> In January 1998, four ground water monitoring wells were installed near the West UST area to <br /> ' quantify the hydrocarbon concentration in ground water and determine the direction of ground water <br /> flow Results ofthe well installation and subsequent sampling delineated the dissolved hydrocarbons <br /> and indicated direction of ground water flow generally towards the northeast Ground water <br /> ' monitoring enabled delineation of the dissolved hydrocarbon plume, with concern for the possible <br /> migration of the plume away from the West UST <br /> ' Locations of the monitoring wells are illustrated on Figure 2 <br /> ' Advanced GeoEnvironmentai,Inc <br />