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♦HB-6 <br /> Tank-2(1,000 gallon unleaded gasoline) <br /> Tank-1 (1,000 gallon leaded gasoline) X SB-2 h <br /> 8974 <br /> S 1 0 <br /> "W-7 <br /> Pipuig ED <br /> 7 HB-5 A Od <br /> 90 05 � <br /> H13-4 <br /> E <br /> Sto e <br /> CO <br /> (� roun water Flow <br /> pirection Septic Tank <br /> (approximate <br /> location) <br /> bD <br /> Shop Leach Line <br /> (approximate location) <br /> O Hoist <br /> HB-3 HB-2 <br /> p Hoist Tank-4(360 gallon kerosene) <br /> Q N4W-3 <br /> 8993 <br /> ® Tank-3(450 gallon waste oil) <br /> Production Well 0 <br /> May 4, 1995 Z� <br /> Groundwater Gradient-0 00574 ft/ft HB-la <br /> Figure 3 Groundwater Gradient Map <br /> Gradient Bearing N41°E <br /> Legend <br /> Z� Hand Auger Boring <br /> Elevation f Dp of Fn <br />' MW-1 lq-w 3� Soil Boring <br /> MW-2 99 20' ® Monitoring Well <br /> MW-3 99 38' <br /> note referenced to an ® Former UST 0 20 <br /> arbitrary plane 9005 Groundwater Elevation Scale Feet <br /> Georges Service Geological Technics Inc <br /> 1600 Durham Ferry Road Project No 281 2 <br /> Tracy, California drawn 08/11/95 <br /> 1 <br />