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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 /> 76.79 Ground water elevation in feet above MSL <br /> (ND) Benzene concentration in ppb <br /> (44) MTBE concentration in ppb <br /> ND=Not Detected <br /> <X=Not detected at detection limit X <br /> Notes Monitoring and sampling performed on <br /> Approximate Location of CHANNEL STREET v 22-Apr-98 unless otherwise indicated <br /> Former Tank Excavation Approximate hydraulic gradient= 0 013 - 0 006 <br /> 0 <br /> Sidewalk MW-2 VEW-3 Y--�-- <br /> -VEW-2 —76 83 --(ND) RW-1 --1 <br /> (ND) (ND) 1(19) 7653 MW-4 <br /> (33),I (84)— MW-3 (0 53) T 7643 <br /> 76 83 (ND) (ND) <br /> Concrete Pad i (ND) (3 9) W <br /> (23) W <br /> ' r VEW.1 RW-2 Q! <br /> +(ND) Canopy ® 76 45 <br /> MW-5 (180) (ND) <br /> 7759 (6 6) <br /> (ND) 6 79 <br /> (210) o o (ND) — — <br /> N <br /> Building (44) VEW-4 <br /> (ND) x, � <br /> (4 9) <br /> Former Waste Channel Bulkhead, <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 <br /> Inch=30 Feet <br /> PLATE GROUND WATER CONTOURICHEMICAL CONCENTRATION MAP <br /> BRIA <br /> C M Weber Enterprises Property �I� 0-0821 <br /> 2 141 North El Dorado Street 240-0821 <br /> Stockton, California <br /> Drawn By MDP Date 11-Jun-98 Approved By n—,� Date <br />