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r <br /> EXPLANATION <br /> �- 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 /> 7386 Ground water elevation in feet above MSL <br /> (ND/4.2) Benzene/MTBE concentration in ppb <br /> ND=Not Detected <br /> <x =Not detected at detection limit of x <br /> Notes Monitoring performed on 09-Jul-97 <br /> Approximate Location of C"ANNEL STREET Approximate Hydraulic Gradient=0 01 <br /> Former Tank Excavation <br /> ----- — - - -- ----RW-1 <br /> Sidewalk VEW-3 7157 <br /> Mw-2 (ND/4.2) —®(ND/ND) <br /> 7383 <br /> 74 0 - 50 <br /> (ND/38) -� MW.3 (ND/ND) <br /> VEW-2 -1� 7387 <br /> (ND/7 5) Concrete Pa (ND/ND) W <br /> 74 5 W <br /> MW-5 � VEW-1W-2 CA <br /> 07480 ' <br /> + >#(ND/ Canopy 1& 7 47 � <br /> (¢1.01560) �A 5 _�o _ ' (ND/ND) <br /> \MW-1 � <br /> 73 86 <br /> (ND/11) <br /> Building �'EW.4 E <br /> (ND/10) - -- - <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 /> 1 Inch=30 Feet <br /> PLATE GROUND WATER CONTOUR AND BENZENEIMTBE CONCENTRATION MAP <br /> C M WeberEnterprtses Property enviros <br /> 2 141 North El Dorado Street 97369 <br /> Stockton, California <br /> Drawn By MED Date 8-Sep-97 Approved By Date <br />