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EXPLANATION <br /> MONITORING WELL <br /> I <br /> OQ SOIL BORING <br /> r — — — — — — — — — -- — — — — — — — NESTED SPARGE/VENT WELL <br /> MW-4 <br /> I *(NA) I — — — — PROPERTY BOUNDARY <br /> B-<0 5 <br /> ITPHG—< B BENZENE IN µg/L <br /> MTBE-<0 5 I TPHG TOTAL PETROLEUM HYDROCARBONS <br /> 00-1 9 AS GASOLINE IN gg/I <br /> MTBE METHYL—TERT—BUTYL—ETHER IN µg/L <br /> DO DISSOLVED OXYGEN IN mg/L <br /> 7—ELEVEN I NA NOT ANALYZED/NOT AVAILABLE <br /> FACILITY <br /> NO 21756 I (1715) POTENTIOMETRIC SURFACE ELEVATION <br /> >� I �7710— POTENTIOMETRIC SURFACE CONTOUR <br /> I � <br /> (CONTOUR INTERVAL = 0.02 FT) <br /> I � <br /> zGROUNDWATER FLOW DIRECTION <br /> I � AND GRADIENT (1) <br /> GP-1 a <br /> ` B-<o 5 I w <br /> I <br /> TPHG=<50 w <br /> MW-1 1J08 SND MTBE-<0 5 I 3 <br /> I (17 08�� �o / DO-1 B O <br /> Ba<a s `° �1�� ♦MW-3 I N <br /> TPHG-<50 <br /> MTBE=2.500 GP-2 rFORMER UST's <br /> ` <br /> D0=1 3 \ 1 <br /> SP <br /> V-2 <br /> ii ii i I <br /> `\ i i i i i 1 30 60 <br /> p <br /> - GP6- I <br /> /�1 O i i i i i i GP_5I APPROX. SCALE IN FEET <br /> GP-3 --- — i ii ii i O <br /> L---J L---J L-- <br /> 7-ELEVEN, INC. <br /> I '0000,1,1GP-4 FACILITY NO. 21756 <br /> �M1715} 853 EAST YOSEMITE AVENUE <br /> ( 1 � <br /> – 6=<u5 – – – – – — MANTECA, CALIFORNIA <br /> IEHG-<50 781723 <br /> DO-20 4 DRAWN BY E SIMONIS DATE 6-20-02 <br /> E. YOSEMITE AVENUE 2 DRAFTED BY. C DOUGLAS DATE. 6-20-02 <br /> CHECKED BY DATE <br /> POTENTIOMETRIC SURFACE AND <br /> (� DISSOLVED HYDROCARBON <br /> SI1�V1►" CONCENTRATION MAP (04/08/02) <br /> Shaw E&I,Inc. FIGURE 2 <br /> 2175OGWC0402 <br />