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k' ! KL ElNFELDER <br /> i <br /> i <br /> 2 only. The remaining seven detected concentrations of benzene exceed the MCL for benzene in <br /> f groundwater. <br /> i Toluene was detected in seven of the seventeen groundwater samples analyzed ranging from 0.64 <br /> ug/l (MW-DIS-2) to 50,000 ug/l (NP-1-80'). The remaining ten groundwater samples showed <br /> non-detect concentrations of toluene above the laboratory reporting limit (ND < 0.3 ug/1). The <br /> PMCL for toluene is 150 ug/l. The detected concentrations of toluene are below the PMCL for <br /> toluene in water in monitoring well MW-DIS-2 and SVE-north. The remaining five detected <br /> concentrations of toluene exceed the MCL for toluene in groundwater. <br /> Ethylbenzene was detected in seven of the seventeen groundwater samples analyzed ranging <br /> from 5.4 ug/1 (MW-DIS-2) to 4,000 ug/l (NP-1-70'). The remaining ten groundwater samples <br /> showed non-detect concentrations of ethylbenzene above the laboratory reporting limit (ND < 0.3 <br /> ug/1). The PMCL for ethylbenzene is 700 ug/l. The detected concentrations of ethylbenzene are <br /> below the PMCL for ethylbenzene in water in monitoring well MW-DIS-2 and SVE-north. The <br /> remaining five detected concentrations of ethylbenzene exceed the MCL for ethylbenzene in <br /> groundwater. <br /> a Xylene was detected in seven of the seventeen groundwater samples analyzed ranging from 14 <br /> ug/l (MW-DIS-2) to 25,000 ug/l (NP-1-70'). The remaining nine groundwater samples showed <br /> non-detect concentrations of xylene above the laboratory reporting limit (ND < 0.3 ug/1). The <br /> PMCL for xylene is 1,750 ug/l. The detected concentration of xylene is below the PMCL for <br /> xylene in water in monitoring well MW-DIS-2 and SVE-north. The remaining five detected <br /> concentrations of xylene exceed the MCL for xylene in groundwater. <br /> 1,2-DCA was detected in seven of the seventeen groundwater samples analyzed ranging from 8.2 <br /> ug/l (MW-DIS-14s) to 1,900 ug/l (NP-1-80'). The remaining ten groundwater samples showed <br /> non-detect concebtrations of 1,2-DCA above the laboratory reporting limit (ND < 5.0 ug/1). The <br /> PMCL for 1,2-DCA is 5 ug/1. The detected concentrations of 1,2-DCA exceed the PMCL for <br /> 1,2-DCA in groundwater in each of the seven monitoring wells where 1,2-DCA was detected. <br /> EDB was detected in four of the seventeen groundwater samples analyzed ranging from 42 ug/l <br /> (NP-1-90') to 1,000 ug/l (NP-1-80'). The remaining thirteen groundwater samples showed non- <br /> detect concentrations of EDB above the laboratory reporting limit (ND < 5.0 ug/1). The PMCL <br /> for EDB is 0.05 ug/l. The detected concentrations of EDB are above the PMCL for EDB in <br /> water in each of the monitoring well where detected concentrations of EDB were found. <br /> Ten groundwater samples (MW-DIS-1, MW-DIS-2, MW-DIS-4, MW-DIS-7s, MW-DIS-7d, <br /> SVE-North, SVE-South, and NP-1-70', NP-1-80'and NP-1-90') were analyzed for the four <br /> oxygenates MTBE, DIPE, ETRE, and TAME. The oxygenates MTBE, DIPE, ETBE, or TAME <br /> were not detected in any of the groundwater samples submitted for laboratory analysis. <br /> All seventeen groundwater samples were analyzed for TBA. TBA was not detected in any of the <br /> f groundwater samples submitted for laboratory analysis. <br /> I <br /> l 2280,MON/2002R394 <br /> Page 2 of 15 <br /> ®2002,Kleinfelder,Inc May 10,2002 <br />