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02-Jun-00 <br /> EXPLANATION <br /> Groundwater Monitoring Well <br /> ® Groundwater Recovery Well <br /> Soil Vapor Extraction Well <br /> Groundwater elevation contour in feet <br /> referenced to site datum Arrows indicate <br /> approximate direction of groundwater <br /> flow <br /> 7783 Groundwater elevation in feet relative <br /> to site datum <br /> NS =Not surveyed <br /> (<0 500) Benzene concentration in ppb <br /> (5 27) MTBE concentration in ppb <br /> <x=Not detected at detection limit x <br /> *Well MW-5 inaccessible <br /> Approximate Location of CHANNEL STREE 17 Approximate hydraulic gradient=0 02 <br /> Former Tank Excavation VEW-3 <br /> NS <br /> Sidewalk 7783 <br /> 77 98 <br /> —(590)-(<o soo)��77 89 <br /> VEW-2 +/7797 (5 27) ((<2550} <br /> NS (<2 50)) <0 500) <br /> / —77 5 W <br /> MW-5* V) <br /> r I � <br /> (NS) �VN <br /> EW-1 �? -0 RW-2 <br /> (<0 50012,050 29-Mar-00) S MW-I 7707 <br /> ('u s00) r 77 gg (<0 500) <br /> (s90) (<0 500) (4 07) <br /> (1,700) <br /> Building VEW-a <br /> NS <br /> (<0 500) <br /> (953) <br /> ___-- _ __ Former <br /> Former Waste Channel Bulkhead , Dispenser <br /> Oil Tank (Below) Island <br /> Concrete Deck Parking Area <br /> N- <br /> Scale FIGURE <br /> 0 15 30 60 <br /> Base map from Fugro map of 13-Dec-95 <br /> 1 Inch=30 Feet <br /> C.M. Weber Enterprises PropertyG Groundwater Contour/ <br /> 141 North EI Dorado Street Chemical Concentration Map <br /> Stockton, California <br /> Incident No 97130156 C A M B R I A April 10, 2000 <br />