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v <br /> �`��^1 <br /> ��� �,�n� <br /> yam'..: _cs�`'�� .-..•,.tr,a-a -- __ "�' �� .:�';� ar � �' '�'.:� - ��-<i- z'"'£�^� � ��* - .w <br /> 4 <br /> M <br /> yy :� <br /> g-. <br /> I- <br /> Ms. Maria Guensler <br /> February 6, 1992 <br /> Page 3 <br /> TABLE 2 <br /> Ground Water Sample Analytical Results <br /> Concentrations in parts per Billion(ppb) <br /> Monitoring Ethyl- 'V?Ha as <br /> PaLe enz e T lues& b—ertzmm Xylenes easolina <br /> MW-1 08/24/91 <0.5 <0.5 <0.5 <0.5 <50 <br /> I2/13/91 <0.5 <0.5 <0.5 <0.5 75 <br /> MW-2 0$!29191 <0.5 <0.5 4.9 <0.5 82 <br /> 12/13/91 <0.5 <0.5 <0.5 <0.5 <50 <br /> MW-3 08/29/91 240 3.4 <2.5 3.5 630 <br /> 12113/91 270 8.0 < <0.5 560 <br /> a Total Petroleum Hydrocarbons. <br /> The concentrations of BTEX and T1:,Y as gasoline in the ground water sample collected from <br /> In <br /> onitoring well MW-2 on De-,ember 13, 1992,were reported below the Iaboratory detection limits. <br /> r-.. The ground water sample collected from monitoring well MW-1 was reported below the lab)ratory <br /> w detection limit of 0.5 parrs per billion(ppb)for BTEX and 75 ppb for TPH as gasoline. The ground <br /> water sample col!ected from monitoring well MW_3 was reported below the laboratory detection <br /> limit, for ethylbenzeae and xylenes, 270 and 8.0 ppb for benzene and toluene, respectively, and <br /> 560 Ppb for TPH as gasoline. The inferred distribution of diss6ived benzene and TPH as gasoline <br /> in ground water beneath the site is illustrated in Figures 4 and 5. <br /> The next sampling event at this site is scheduled for March 1992. <br /> If you have any questions regarding this letter report,please do not hesitate to call the undersigned <br /> at(916)638-2083. <br /> Sincerely, <br /> DELTA, ENVIRONMENTAL CONSULTANTS, INC. <br /> Rainger <br /> i Protect Manager <br /> �'7-`— ----- - -- - - r <br /> ]antes R. Brownell <br /> No.5078 r <br /> California Registered Geologist No. 3078 <br /> lhmb(LRP0.'7.TA3 <br /> Enclosures OP CA 4,fO <br />