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EXPLANATION <br /> f 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 /> 7598 Ground water elevation in feet above MSL <br /> (ND) Benzene concentration in ppb <br /> (22 0) 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 26-Jan-99 <br /> Former Tank Excavation Approximate hydraulic gradient-0 008 to 0 015 <br /> ---- <br /> Sidewalk VEW-2 MW-2 (ND) _ <br /> (ND) 76 36 (22 0) RW-1 ® � <br /> - <br /> 4425 (ND) + 1 7610 MW-4 <br /> (ND) AV 75 98 <br /> — (3 22) (ND) <br /> �-— � (3 22) <br /> `11'�MW-3 W <br /> ---07635 <br /> �\ (ND) RW-2 <br /> f VEW-1 \ (32 3) ® 76 05 <br /> MW-5 (ND) - - - - Canopy (ND) <br /> 7707 (276) ¢ MW-1 (27 5) <br /> (<5 0) 7617 <br /> (1750) vim. (<10) <br /> (504) o <br /> rZ <br /> Building VEW-4 <br /> (ND) --(688) <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 1 Inch=30 Feet <br /> j7j7ATE GROUND WATER CONTOURICHEMICAL CONCENTRATION MAP <br /> C M Weber Enterprises Property C AMBRIA <br /> 141 North El Dorado Street 240-0821 <br /> Stockton, California <br /> Drawn By MRM Date 12-Mar-99 Approved By �j�Date <br />