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LEGEND <br /> • MONITORING WELL LOCATION <br /> GRANTLINEROAD �+���'~' FORMER PIPELINES-APPROXIMATE LOCATION <br /> �� .. — — PROPERTY BOUNDARY <br /> �� ..�� <br /> ����.�� ----------------------PROPOSED DEVELOPMENT <br /> ��r�..r— -_�. ... ..—...` ... ... .W--PARCEL BOUNDARIES <br /> .�„.. --- ..... . .. - - --- --- — 01H —PG&E OVERHEAD POWER LINES <br /> _--� x EXISTING FENCE <br /> �. 4 CD EXCAVATION FOOTPRINT <br /> ' / ' <br /> AREA B1 - 74.02 GROUNDWATER ELEVATION RELATIVE <br /> r -^ / ° I,,' � _^_ _--__-, �... ..�"----...�. .� � TO FEET MEAN SEA LEVEL(ft MSL) <br /> ---- - - - 1 ( ) TION IN <br /> _-- -- _. ---- 1 'I ND TPH AS CRUDE OIL,CONCENTRATION-------------- <br /> - ,r' MICROGRAMS PER LITER(pg/L) <br /> (ND) TPH AS DIESEL,CONCENTRATION IN pglL <br /> MW-18 i +` (ND) BENZENE CONCENTRATION IN}IgIL <br /> r r i ' �+ f MW-19 ' i <br /> J, r'+ rt . ; (2)1 i .__.�', 73.31 <br /> ( �) (ND) I ; --73.20 GROUNDWATER ELEVATION CONTOUR, <br /> °� i ',' MW-- 7 ..1 (ND) (ND) MW-14 PONDS IN ft MSL <br /> 73,31(ND) 0� �p (N©) 74.66 ------ , 0.004 GROUNDWATER FLOW DIRECTION <br /> (ND} ! ,1rb. (ND) AND GRADIENT <br /> _(ND)--.-, (ND) <br /> AREA B2 (Nb) <br /> { � ; <br /> (N©) ` 1 ND NOT DETECTED <br /> rO - I _...�..._... <br /> ,' �• °/ ,- -------------------------- --- . .'� _• - - -�- -•;�. �' _._.._._�.. .-!. ._T <br /> 1 i 1 1 <br /> AREA 83 tk7588 <br /> MW 15 i <br /> (NO) EXISTING LEVEE LOAD <br /> ! , , <br /> � f 1 <br /> �- <br /> Q� <br /> f --------------•__.___ i t----- ------------- <br /> MW-1 <br /> ------- ___....-_. ----..__...__... E 1 <br /> a , x <br /> 1 • k 1 <br /> 75.51 p0 _ --� +1 ; . --- — <br /> Q3 0 <br /> f ( ) x MIN-13 <br /> NDi i F <br /> (ND) 7fi;52 i i ) xx <br /> (ND) <br /> (ND) ! + 1 <br /> (ND) I FORMER DAIRY <br /> AREA B4 <br /> 1 e k <br /> PASTURE � -^------------------------- --------- ------ x x x <br /> x ____"'__----•_- _ ...._..... <br /> _.__-___-••_-_ k X x <br /> I <br /> I E <br /> AREA B5 I CORAL <br /> figure 2a <br /> 0 50 15oft GROUNDWATER CONTOUR AND CHEMICAL CONCENTRATION MAP - AREAS B1 - B4 <br /> I� NEIGHBORHOOD B, PARCEL 209-06-08 <br /> DECEMBER 23, 2010 <br /> FORMER SHELL CENTRAL VALLEY CRUDE OIL PIPELINES <br /> SOURCE:SAIC,2008,MONITORING WELL LOCATIONS MW-7 THRU MW 19 BASED ON Mountain House, California <br /> MID COAST ENGINEERING SURVEY DATED 9122!09,COORDINATE SYSTEM US <br /> STATE PLANE 1983,CA ZONE 3.BENCHMARK ELEV=82.315 FEET NAVD 80 DATUM. <br /> 060222-2010(012)GN-SO001 JAN 17/2011 <br />