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EXPLANATION <br /> -W Ground Water Monitoring Well <br /> ® 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 /> 7667 Ground water elevation in feet above MSL <br /> (ND) Benzene concentration in ppb <br /> (36) 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 CHANNEIL, STREET 05-Oct-98 <br /> Former Tank Excavation Approximate hydraulic gradient=0 008 to 0 01 <br /> VEW-3 <br /> Sidewalk VEW-2 MW-2 (ND) <br /> (ND) 77 04 (8 i) -RW-1 <br /> - -(61) {N20} + (ND) -0- 7667 <br /> 7684 MW 4 <br /> -®-( <br /> -,o,""MW-3 (4 l) C� <br /> (/ <br /> 7705 W <br /> VEW-1"T (ND) RW-2 fx <br /> -(ND) (65) ® 76 67 <br /> (280) Canopy (ND) <br /> M 66 -n � - - - LL-O- MW-1 (36) <br /> (ND) (n 7692 d <br /> (370) t` (ND) _ P� <br /> (380) <br /> Building VEW-4 E <br /> (ND} _ <br /> (73) <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 /> PLATE GROUND WATER CONTOUR/CHEMICAL CONCENTRATION MAP <br /> C M Weber Enterprises Property C AMBR IA <br /> 2 141 North El Dorado Street 240-0821 <br /> Stockton, California <br /> Drawn By DRC Date 10-Dec-98 Approved By Date/?'�s <br />