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LEGEND <br /> GRANT L/NE ROAD _ <br /> • MONITORING WELL LOCATIONFORMER PIPELINES-APPROXIMATE LOCATION <br /> PROPERTY BOUNDARY <br /> —_ — ----------------------PROPOSEDDEVELOPMENT <br /> —...- <br /> - —PARCEL BOUNDARIES <br /> —. — — — o/H —PG&E OVERHEAD POWER LINES <br /> _ - _ — x EXISTING FENCE <br /> z <br /> ' --------------- O EXCAVATION FOOTPRINT <br /> / AREA B1 ------ -- -- <br /> 74.02 GROUNDWATER ELEVATION RELATIVE <br /> ° - <br /> - <br /> - <br /> - <br /> _ -� __------- — TO FEET MEAN SEA LEVEL(ft MSL) <br /> ------------------ <br /> --------- - <br /> TPH AS CRUDE OIL, <br /> I I I (ND) MICROGRAMS PER LITE CONCENTRATION IN <br /> j <br /> MW-18 (ND) TPH AS DIESEL,CONCENTRATION IN Ng/L <br /> -- ----- <br /> 72.49 i 2W 1 9 I , I I (ND) BENZENE CONCENTRATION IN pg/L <br /> (ND) I <br /> / ( MW-17 (ND) (ND) —73.20— GROUNDWATER ELEVATION CONTOUR, <br /> ° .81 (ND) (ND) MW-14 PONDS IN ft MSL <br /> 72 <br /> (ND)/ .004 <br /> ( )(N 74.09 0 <br /> D) 00 FLOW DIRECTION <br /> '-_,_ ND � � ^O. (ND) ____-------' � � GROUNDWATER <br /> ----- / i AND GRADIENT <br /> --' (ND)----' - - (ND) <br /> AREA B2 (ND) — ND NOT DETECTED <br /> — — <br /> ----------------------------------- _ .—... <br /> —.. .—... <br /> / O AREA B3 MW-75.27 <br /> 15 <br /> / 36 �bQi (ND) EXISTING LEVEE ROAD <br /> (N D)_ —.I.—...—...—. <br /> (ND) —...—.. <br /> o <br /> x <br /> ----- --------------------- I <br /> �O ------------ <br /> ��MW-16 MW-13 <br /> 74.90 751.90 <br /> (ND) I (ND) I x x <br /> 1 (ND) (ND) <br /> / (ND) (ND) I I FORMER DAIRY <br /> AREA B4 <br /> i <br /> PASTURE -- - -------------------' <br /> ------------------ <br /> ,,, I X x x x <br /> ' I —x <br /> --------------------- --------------- ---- <br /> 1. i- I x x x x X <br /> ' AREA B5 <br /> x I CORAL <br /> I <br /> r <br /> figure 2a <br /> 0 50 150ft GROUNDWATER CONTOUR AND CHEMICAL CONCENTRATION MAP - AREAS B1 - B4 <br /> NEIGHBORHOOD B, PARCEL 209-06-08 <br /> SEPTEMBER 15, 2010 <br /> FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES <br /> SOURCE:SAIC,2006.MONITORING WELL LOCATIONS MW-1 THRU MW-19 BASED ON <br /> MID COAST ENGINEERING SURVEY DATED 9/22/09,COORDINATE SYSTEM US Mountain House, California <br /> STATE PLANE 1983,CA ZONE 3.BENCHMARK ELEV=62.315 FEET NAVD 88 DATUM. <br /> 060222-2010(009)GN-S0001 OCT 25/2010 <br />