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�Ir r rr r■r rr rr rr rr a� ar rr rr rr tr r� r r <br /> EXPLANATION <br /> MONITORING WELL <br /> O SOIL BORING <br /> - — --- -- — — — — — — — — — — — — — — NESTED SPARGE/VENT WELL <br /> 11 MW-4 <br /> J T(14 97) - – - PROPERTY BOUNDARY <br /> 86<0 5 I <br /> TPHG-< 0 B BENZENE IN µg/L <br /> MTBE=<O5 I TPHG TOTAL PETROLEUM HYDROCARBONS <br /> DO-1 6 AS GASOLINE IN µg/I <br /> I MTBE METHYL-TERT-BUTYL-ETHER IN gg/L <br /> DO DISSOLVED OXYGEN IN mg/L <br /> 7-ELEVEN I NA NOT ANALYZED/NOT AVAILABLE <br /> FACILITY <br /> NO 21756 I (1519) POTENTIOMETRIC SURFACE ELEVATION <br /> ` I <br /> —1515— POTENTIOMETRIC SURFACE CONTOUR <br /> h ` <br /> (CONTOUR INTERVAL = 0 05 FT) <br /> pp I ►� <br /> zGROUNDWATER FLOW DIRECTION <br /> _-- I j AND GRADIENT (�) <br /> I <br /> o <br /> 30 MW--1 (15 15)/5 ' <br /> 5 OS) 0B <O 5TPHG< CL <br /> TPHG=<50MTBE=<00.1 05 300 D0=1 2 GP-2 FORMER UST's <br /> I �`� <br /> 1� r--� i--� r I I <br /> SPV-2 I II it I <br /> GO 6 i iSPV t I 0 30 60 <br /> II I <br /> O ' _ -�� GP-51 APPROX SCALE IN FEET <br /> I GP-3 I II II I O <br /> 7-ELEVEN, INC. <br /> I p <br /> MW-2 GP-4 FACILITY NO. 21156 <br /> I � <br /> #(1719) _ 853 EAST YOSEMITE AVENUE <br /> B=<os _ __ _ MANTECA, CALIFORNIA <br /> — — — — — — <br /> TPHG=<50 781723 <br /> MTBE 7 <br /> 3 <br /> DO-1 3 DRAWN BY E SIMONIS DATE 9-12-02 <br /> E YOSEMITE AVENUE DRAFTED BY C DOUGLAS DATE 9-12-02 <br /> CHECKED BY DATE <br /> ® POTENTIOMETRIC SURFACE AND <br /> DISSOLVED HYDROCARBON <br /> Shaw CONCENTRATION MAP (07/01/02) <br /> Shaw E&1,Inc. FIGURE 2 <br /> 21756GWC070z <br />