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,i <br /> (18.91 AW-8 <br /> r95o . <br /> x <br /> rg <br /> 00 g8� 0 20 <br /> Y <br /> 20,00 SCALE @1 FEV <br /> 20.25 LEGEND: <br /> MONITOR WELL <br /> (20.40) Avg-7 (1922 - <br /> ), <br /> 20.50 AW-5 ! SOIL BORING <br /> —' FENCE <br /> 20 RAILROAD TRACKS <br /> I <br /> a EAST G N LINE ROAD <br /> ® Cl P� RAILROAD CROSSING ' <br /> B-i <br /> (20.1.1) GROUNDWATER ELEVATION IN <br /> FEET ABOVE MEAN SEA LEVEL <br /> —22.00— <br /> GROUND WATER ELNATION <br /> CONTOUR UNE <br /> 0 21.00� AW-3 ® - <br /> -�- GENERAL DIRECTION OF <br /> a s } Aw•�(20.17f41 <br /> (21.04) NOTE: GROUND WATER FLOW <br /> 4 <br /> I <br /> 21 25�_ 1.DATA BASED ON GROUND WATER <br /> I 4 LEVEL MEASUREMENTS COLLECTED <br /> ON MAY 7.1991. <br /> w_ 1 9.6 2.CONTOUR INTERVAL=0.25 FOOT. <br /> 21.50 3.GHAOIENT--0.014 FOOT PER FOOT <br /> 1 <br /> NORTH EAST. FIGURE 3: GROUND WATER <br /> POTENTIOMETRIC SURFACE <br /> MAP <br /> 21.75 A <br /> FORMER MOBIL OIL BULK PLANT <br /> 500 EAST GRA%rrLINE ROAD <br /> 22.00 I <br /> TRACY,CALIFORNIA <br /> (21.74) � ALTON GEOSCIENCE <br /> Awa A'N� 1000 Burr►att Am. Ste.140 <br /> PROJECT NO. 30-0136-01 C*n=d'CA 94520 <br /> 'i <br />