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LEGEND _ _ AREA 2 <br /> MW- 13C <br /> ® MONITORING WELL LOCATION \� 66 . 40/54 . 24 <br /> ® DEEPER ZONE MONITORING WELL LOCATION ( NA) <br /> Cil <br /> 87 . 000 - GROUNDWATER ELEVATION CONTOUR, 00 CD O MW- 14C <br /> IN FEET ABOVE MEAN SEA LEVEL (ft MSL) , \ 64 . 83/52 .60 <br /> DASHED WHERE INFERRED �\ ( NA) <br /> 87 , 60/33 .47 GROUNDWATER ELEVATION IN ft MSL/DEPTH TO 0004 / ( ND) <br /> WATER IN FEET BELOW GROUND SURFACE (ft BGS) <br /> (23 ) 000) TPH AS CRUDE OIL , CONCENTRATION IN j <br /> MICROGRAMS PER LITER (pg/L) <br /> (89) BENZENE CONCENTRATION IN pg/L \ AREA 3 <br /> ND NOT DETECTED <br /> \ a <br /> NA NOT ANALZYED � <br /> 0_004_x__ �\ <br /> GROUNDWATER FLOW DIRECTION <br /> AND GRADIENT <br /> NOTE : <br /> FORMER SHELL 00 <br /> WELLS IN GRAY ARE SCREENED IN DIFFERENT ZONES CRUDE OIL PIPELINES L6 <br /> AND NOT USED IN CONTOURING , c� O MW-5C <br /> 65 . 74/55 . 12 <br /> ZONE C - WELL SCREEN INTERVAL 160 TO 177 ft BGS ( NA) <br /> ( ND) <br /> �iq <br /> 4t) <br /> i <br /> AREA 4 <br /> figure 6 <br /> ZONE C - GROUNDWATER CONTOUR AND CHEMICAL CONCENTRATION MAP e AREAS 2 , 3 , AND 4 <br /> 0 40 Soft NOVEMBER 30 , 2011 <br /> FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES <br /> BASE MAP: SAIC SHELL PROPOSED BORING LOCATIONS MAP DATED 05/07/08. CLAYTON CORDES RANCH <br /> GROUP SERVICES PREVIOUS SOIL BORING LOCATIONS DRAWING DATED 8/28/02, Tracy, California <br /> SOURCE : MID COAST ENGINEERING SURVEYS DATED 8/13/10, 9/13/10, 7/7/11 , AND <br /> 8/18/11 US STATE PLANE 1983, CA ZONE 3 (NAD 1983), NAVD 88. <br /> 060223-2011 (016) GWS0006 FEB 15/2012 <br />