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DTW <br /> MW-1 770 <br /> MW-2 870 ® HB-6 <br /> MW-3 765 <br /> Tank-2(1,000 gallon unleaded gasohne) <br /> Tank-1(1,000 gallon leaded gasoline) SB-2 h <br /> 87 56' <br /> SB-1 Q 1iW-2® <br /> PPiing <br /> 88 75' D HB-4HB 5• `V <br /> Mw-1®= e <br /> Imet <br /> � �a <br /> Cf) <br /> IF �.}r� ore <br /> >1 �G <br /> p Septic Tank <br /> (appraxunate <br /> location) <br /> CSA <br /> Shop Leach Line <br /> /Z (approxunate location) <br /> p Hoist <br /> HB-3 � HB-2 <br /> Q Hoist Tank-4(360 gallon kerosene) <br /> Mw-3 <br /> 88 74' <br /> . Tank-3(450 gallon waste oil) <br /> Production Well 0 <br /> July 24, 1996 • <br /> Groundwater Gradient-0 0243 ft/ft HB-1A <br /> Figure 3 Groundwater Gradient Map <br /> Gradient Bearing N4°W <br /> Legend <br /> ® Hand Auger Boring <br /> levation of Top of Casing <br /> MW-1 99 39' Q Soil Boring <br /> MW-2 99 20' m Monitoring Well <br /> MW-3 99 38' <br /> note referenced to an Former UST 0 2q <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 12/18/96 <br />