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LEGEND ' <br /> ' I APN:209-450-26 <br /> • MONITORING WELL LOCATION <br /> --------------------------------------------------- <br /> ------------ <br /> A SOIL VAPOR PROBE LOCATION <br /> FORMER PIPELINES—APPROXIMATE LOCATION <br /> ---------------------PROPOSED DEVELOPMENT <br /> — — —— — — ——PARCEL BOUNDARIES <br /> OEXCAVATION FOOTPRINT <br /> 74.02 GROUNDWATER ELEVATION RELATIVE <br /> TO FEET MEAN SEA LEVEL(ft MSL) <br /> (ND) TPH AS CRUDE OIL,CONCENTRATION IN AREA 8 <br /> MICROGRAMS PER LITER(Ng/L) I \ <br /> (ND) TPH AS DIESEL,CONCENTRATION IN fag/L <br /> (ND) BENZENE CONCENTRATION IN Ng/L I I \\ <br /> —66.15- GROUNDWATER ELEVATION CONTOUR, I ; MW-14 <br /> IN ft MSL I : 65.0 <br /> ND NOT DETECTED I 65.48 (ND): <br /> 65.48 ; (ND); <br /> GROUNDWATER FLOW DIRECTION=VARIABLE I (ND) 43 <br /> 66 (ND): I / <br /> APPROXIMATE HYDRAULIC GRADIENT=0.002 AREA 9/10 I (ND) h( (0 <br /> (ND) <br /> • ss. S <br /> I <br /> I � <br /> 65.55 8 9g V <br /> AREA 11 <br /> ' 65.65 <br /> APN:209-450-21 I MW 11—11• IAPN:209-450-28 <br /> 65.72 MW-13 <br /> (ND) 66.21 <br /> I (ND)I (ND) <br /> ' (ND) (ND) <br /> I <br /> (ND) I <br /> AREA 12 <br /> ----------- <br /> -- <br /> __ <br /> 1I , <br /> � <br /> ----------------------- <br /> -------------- <br /> AREA 13_ <br /> _ <br /> "-------------T---------------- -------------------` <br /> 0 <br /> _ <br /> 100 200ft <br /> I <br /> figure 3b <br /> GROUNDWATER CONTOUR AND CHEMICAL CONCENTRATON MAP - AREAS 8 - 13 <br /> CALIFORNIA NEIGHBORHOODS C AND D, PARCEL 209-45 <br /> SEPTEMBER 15, 2010 <br /> SOURCE:SAIC,06/11/2008 AND SAN JOAQUIN COUNTY ASSESSOR'S MAP BK.209.45. FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES <br /> a•,_, MONITORING WELL LOCATIONS GINE THRURING SURVEY <br /> AND SOIL VAPOR PROBE LOCATON Mountain House, Ca/ifornia <br /> SVPT BASED A MID COAST ENGINEERING SURVEY DATED 10/28/09,62. 1 COORDINATE <br /> �� SYSTEM US STATE PLAN 1983,CA ZONE 3.BENCHMARK ELEV=62.315 FEET,NAVD 88. <br /> 060222-2010(009)GN—S0005 OCT 26/2010 <br />