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IMAGE X—REF I OFFICE DRAWN BY CHECKED Y APPROVED BY I DRAWING 779950—A1 <br /> --- --- I Concord I SCHAEFFER 12117199 1 1l NUMBER <br /> MW-4 <br /> (-928) <br /> B=<30 <br /> TPHG82 180 LEGEND <br /> TBE-7,470 <br /> 0=1 69 <br /> MONITORING WELL <br /> �yp1GAL] 40 ABANDONED MONITORING WELL <br /> MW-3 1 Z 2 PROPERTY BOUNDARY <br /> BLOCK <br /> (-901)066 <br /> TPHG a 53 1 OA S B BENZENE IN µg/kg <br /> MTBE-5 47 4 <br /> TPHG TOTAL PTEROLEUM HYDROCARBONS AS <br /> 1 00=1 44 1 S GASOLINE IN µg/L <br /> ASP1 PAVING MTBE METHYL-TERT-BUTYL-ETHER IN r<g/L <br /> 1 1 <br /> o (-888) `1A v` DO DISSOLVED OXYGEN IN mg/L <br /> Ba7,230 <br /> 1 0 TPHG=1,120,000 W-i <br /> MTBE-7 580 �,9 Z� O GROUNDWATER SURFACE ELEVATION <br /> 1 7-ELEVEN DO-159 M 5A 1 Q <br /> 1 FACILITY W-5B+ �` IN TE F SURFACE CONTOUR <br /> NO 17334 (-864) INTERVALVAL 0 0 2 2 FT/FT <br /> 1 B-925 --a— GROUNDWATER FLOW LINE <br /> 1 TPHG-1 260 <br /> MTBE=88 2 <br /> 1 00=1 36 <br /> MW-9 <br /> MW-2 -1 <br /> 8=<a 3 1 CONCRETE <br /> TPHG=<50 PAD <br /> MTBE=<5 1 <br /> DO=2 68 1 <br /> 1 � <br /> 1 l <br /> 7-ELEVEN, INC <br /> 11 �� 7-ELEVEN FACILITY NO 17334 <br /> 4501 NORTH PERSHING AVENUE <br /> 1 <br /> JIB <br /> STOCKTON CALIFORNIA <br /> I SOCK WA�� p{tIVEWP( <br /> LsE FIGURE 2 <br /> POTENTIOMETRIC SURFACE AND <br /> DISSOLVED HYDROCARBON <br /> CONCENTRATION MAP (11/24/99) <br />