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Ms Vicki McCartney April 4, 2006 <br /> Page 3 <br />' MW-1 and MW-3 at concentrations up to 290 pg/L Toluene was detected in the samples from wells MW-1 <br /> and MW-4 at concentrations up to 9 4 pg/L Ethylbenzene was reported in the samples from wells MW-1 and <br /> MW-3 at concentrations of 46 pg/L and 0 57 pg/L, respectively Xylenes were reported in the sample from <br /> well MW-1 at a concentration of 16 pg/L-'MTBE was reported in all samples from all wells at concentrations <br /> ranging from 5 5 pg/L (well MW-1) to 2,220 pg/L (well MW-5) TBA was reported in the samples from all wells <br /> except MW-2 at concentrations ranging from 58 pg/L (well-MW-3) to 3,400 pg/L (well MW-1) Groundwater <br /> analytical data are presented in Table 1 TPHg, benzene,Ad MTBE concentrations from the sampling event <br /> on October 17, 2005, are shown on Figure 2 <br /> eDiscussion <br /> Groundwater elevations and apparent direction of flow were generally consistent with past observations The <br />' apparent concentrations and extent of groundwater impact do not appear to be greatly changed from recent <br /> previous quarters <br />' Any questions regarding the content of this report should be directed to Dan Wynne at (916) 565-4184 <br /> SHAW ENVIRONMENTAL, INC <br /> BRED GED <br /> Q7 S.A <br /> o cr <br /> NQ 5081 <br /> Dan Wynne, RG , CEG , CHG EXP _QC <br />' Project Manager �Q <br /> OF C A0 <br /> 1 <br /> 1 <br /> 1 <br /> N JechPuMoo4o1A AW200 RptW4b544 dm Shaw Environmental,Inc <br />