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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 in 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 /> (081/66) Benzene/MTBE concentration in <br /> ppb 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 /> --- -- - —RW-1 <br /> Sidewalk VEW-3 7355 <br /> —�� MW-2 - (ND/NA) - - ,��(�®(6 3/350 <br /> 7372 MW-4 <br /> > (076/40) 7338 <br /> VEW-2 T 7375 (ND/41) <br /> (ND/4.9) Concrete Pad <br /> (ND/6 4) W <br /> ' VEW-1 RW-2 �4 <br /> 74 494 ' <br /> +15115) Can°p 73 40 tj <br /> • (ND/280) �� (ND/ND) <br /> w <br /> 3 85 <br /> (081/66) N <br /> o � <br /> Building VEW-4 v y <br /> (ND/4 6) <br /> Former Waste Channel Bulkhead <br /> Oil Tank (Below) <br /> Concrete Deck Parking Area <br /> Scale <br /> 0 15 30 60 Feet <br /> I Inch=30 Feet <br /> Base map from Fugro map of 12-13-95 <br /> PLATE GROUND WATER CONTOUR AND BENZENEIMTBE CONCENTRATION MAP • <br /> C M Weber Enterprises Property en virus, <br /> . 3 141 North El Dorado Street 97369 <br /> Stockton, California <br /> Drawn By JPW Date 23-Jun-97 Approved By Date 7-+o 9) <br />