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Y <br /> ® Base on the above findings, no further <br /> characterization of the dissolved-phase hydrocarbon <br /> plume is necessary at this time. <br /> a No fecal coliform was detected above reported <br /> detection <br /> andAW-5hthroughorig AWnells <br /> of 8)W <br /> e No TPH-G, TPH-D, or BTEX constituents were detected <br /> above reported detection limits in the ground water <br /> samples from Monitoring Wells AW-1, AW-2, <br /> through AW-8. <br /> a TPH-G, ethylbenzene, and total xylenes were detected <br /> only in the ground water samples from Monitoring <br /> Well AW-3 at concentrations ranging from 0.3 to <br /> 21.0 ppb. <br /> o The highest concentrations of TPH--G, TPH-D, and BTEX <br /> constituents were detected ing he g round <br /> rOm water <br /> B-7, <br /> samples collected during h <br /> both of which are located onsite and downgradient of <br /> the former tank area. <br /> TPH-D and total xylenes were detected only in the <br /> soil samples collected from Soil Boring B--2 at <br /> ' concentrations of up to 1PO ppm. <br /> a The general ground water flow direction at the site <br /> calculated durwith anthis <br /> averageehydraulic gradientatin is to eof <br /> northeast, with <br /> 0.014 foot per foot. <br /> e The predominant soil types at the site are <br /> clal <br /> y/silt/sand mixtures, with occasional gravelly <br /> lenses to 14 feet below grade and sand g y <br /> - <br /> overlying silty clay that was encountered at <br /> 19 feet below grade. <br /> approximately <br /> ----- ......... .... . ... ._. .._ ....... ._. .. . <br /> 12 <br />