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EXPLANATION <br /> Ground Water Monitoring Well <br /> S Ground Water Recovery Well <br /> Soil Vapor Extraction Well <br /> Ground water elevation contour to feet <br /> referenced to mean sea level (MSL) <br /> Arrows indicate approximate direction of <br /> ground water flow <br /> 7385 Ground water elevation in feet above MSL <br /> (0 81) Benzene concentration in ppb <br /> ND=Not Detected <br /> Notes Monitoring performed on 02-Apr-97 <br /> Approximate Location of CHANNEL STREET Approximate Hydraulic Gradient=0 01 <br /> Former Tank Excavation <br /> -7— <br /> Sidewalk <br /> Sidewalk 73 55 <br /> -- mw-2 VEW-3 <br /> 7372 (ND+ yy MW-4 <br /> *(0 76) - yy T 73.38 <br /> —�� T- M (ND) <br /> ° VEW-2 75 F-0 <br /> (ND) Concrete Pad i (ND) W <br /> VEW.i ' RW-2 G>~ <br /> 49 �� (1 5) Canop 7340 <br /> rp <br /> I(ND) lip �- - -- (ND) <br /> I O <br /> MW-1 <br /> �73 85 <br /> (0 81) <br /> Building VEW-4 F N <br /> (ND) a W <br /> Former Waste Channel Bulkhead�I <br /> Oil Tank (Below) <br /> Concrete Deck Parking Area <br /> Scale <br /> 0 15 30 60 Feet <br /> Base map from Fugro map of 12-13 95 1 Inch=30 Feet <br /> JjL7jATE GROUND WATER CONTOUR/BENZENE CONCENTRATION MAP m <br /> C M Weber Enterprises Property envtros© <br /> 141 North El Dorado Street 97369 <br /> Stockton, California <br /> Drawn By MED Date 16-May-97 Approved Byn.�Date G'_s-9 <br />