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FENCE <br /> — x �ND<050r-x x x x x x � <br /> 2/23/2005 <br /> Mw-5S x N <br /> ®MW-51) <br /> (ND<0 50) <br /> BUILDING 2/23/2005 x <br /> X LEGEND <br /> xMW-3 Monitoring Well (peep <br /> GRASS 1 Zone) with <br /> ci:: Dissolved-Phase MTBE <br /> $ Concentration (,pg/1) <br /> a �o M2 — 2/23 oD) x 4 Mw-los Q Groundwater Recovery <br /> ND<0 50 W�� 19 I MW-7S 0 ; MW-101 <br /> Mw-4S � I MW-7D l(� MW-1 DD Well (S=shallow, <br /> QMw-4D O ` US Ts I (2%0233/2005 I 1=intermediate, D=deep} <br /> ND<0 50 I <br /> Dissolved-Phase MTBE <br /> �_ _ _ _ � x Contour (}Pg/1) <br /> M <br /> 10 e <br /> MW-81 PLANTER / 1 <br /> 2%23%2005 Mw_1 ND<0 50 / <br /> Mw-ss Mw-6s <br /> MW-6D <br /> Mw-8D (N 23/ 50) 240 1 7 <br /> 0 782/23/2005 <br /> 10� <br /> WEST MARCH LANE NOTES <br /> AO/ Contour lines are interpretive and based an <br /> laboratory analysis results of groundwater <br /> samples MTBE = methyl tertiary butyl ether <br /> pgA = micrograms per liter ND = not detected <br /> at limit indicated on official laboratory report <br /> UST = underground storage tank <br /> ( ) = representative of historical value Results <br /> obtained using EPA Method 8260B <br /> MW-101 MW-91 <br /> 34 ND<0 50) <br /> 2/23/2005 <br /> MW-10D MW-9D <br /> 7 0MW-105 (ND<0 50) MW–gS <br /> 4 2 2/23/2005 (ND<0 50) <br /> 2/23/2005 <br /> DISSOLVED-PHASE MTBE <br /> CONCENTRATION MAP <br /> June 6, 2005 <br /> 76 Station 5886 <br /> 2701 West March Lane <br /> i Stockton, California <br /> 0a <br /> 1 <br /> M SCALE (FEET) <br /> 0 <br /> TRC FIGURE 5 <br /> 0 50 100 <br /> II <br /> N <br /> L \Graphics\ProjectsByNumber\20–xxxx\20-0400(Unocal0A4S)\x-5000\5886+\5886–OMSOWG Jul 05, 2005 – 9 57am pgunderson <br /> i <br />