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1 <br /> 04 June 2003 <br /> AGE-NC Project No 95-0141 <br /> Page 3 of 5 <br /> Wells MW-3,MW-5,MW-7,MW-8A through MW-12A and EX-1 were used to determine ground <br /> water flow direction and gradient for shallow ground water The shallow ground water was inferred <br /> to flow generally toward the east-southeast, at a gradient of 0 003 foot/foot Figure 3 illustrates the <br />' contoured shallow ground water elevations as measured on 18 March 2003 <br /> Wells MW-6 and MW-813 through MW-12B were used to determine ground water flow direction <br />' and gradient for the deep ground water zone The deep ground water was inferred to flow generally <br /> toward the east-southeast, at a gradient of 0 002 foot/foot Figure 4 illustrates the contoured deep <br /> ground water elevations as measured on 18 March 2003 <br /> 3 2 ANALYTICAL RESULTS FROM GROUND WATER SAMPLES <br />' The analytical results of the ground water samples were as follows <br /> • TPH-g was detected in ground water samples collected from wells MW-3, MW-5, MW-6, <br />' MW-813, MW-913,MW-I IB and EX-1 at concentrations ranging from 91 µg/l 1n MW-I 1B <br /> to 140,000 µg/l in EX-1 <br />' 0 One or more BTE&X compounds were detected in samples MW-3,MW-5,MW-6, MW-813, <br /> MW-913,MW-i 1 B and EX-1 at concentrations as high as 8,200µg/1 of benzene,29,000µg/1 <br /> of toluene,3,500µg/1 ofethylbenzene and 17,000µg/l of xylenes These high concentrations <br />' were all from well EX-1 <br /> • TBA was detected in samples MW-3,MW-5,MW-6,MW-813 and MW-9B at concentrations <br />' ranging from 5 7 ug/l to 20 ugll No other fuel oxygenates were detected in the ground water <br /> samples <br /> E <br /> • 1,2--DCA was detected in ground water samples collected from all wells except MW-l OA/B,,MW-11A and MW-12AB at concentrations ranging from 4 5 gg/I (MW-9A) to 340 µg/I <br /> (EX-1) In addition,EDB was detected in the groundwater sample collected from well EX-1 <br /> at a concentration of 88 µg/1 <br /> The areal extent of TP - - <br /> H g and 1,2 DCA impacted shallow and deep ground water is illustrated on <br /> Figures 5 and 6,respectively Laboratory results of water samples analyzed are summarized in Tables <br /> fA X AT T wt TT%- 'Inn nn1 <br /> Y � <br /> '/Fp7 <br /> I <br />