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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 /> 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 22-Apr-98 unless otherwise indicated <br /> Former Tank Excavation Approximate hydraulic gradient=0 004-0 02 <br /> -VEW-3— <br /> Sidewalk VEW-2 MW-2 (ND) <br /> (ND) 77 86--(27) -� RW-1 <br /> - -(57), (ND) 7760 MW-4 <br /> (200) (0 65) 77 50 <br /> (3 1) (ND) <br /> Mw-3 <br /> Concrete Pad i 7787 <br /> (ND) � <br /> W <br /> l_ +VEW-1 (100) RW-2 09 <br /> (ND) Canopy 7757 <br /> MWT-5 o'n ' o (230 , (NI]) <br /> 7863 `�' � -1 1*- MW-1 (2 8) � <br /> (ND) c 77 72 <br /> (740) (ND) l <br /> (370) C <br /> 4- <br /> Building vEw(ND) N �4 <br /> (20) a W <br /> Former Waste Channel Bulkhead <br /> Oil Tank (Below) <br /> Concrete Deck Parking Area <br /> Scale <br /> 0 15 30 60 Feet <br /> 1 Inch=30 Feet <br /> Base map from Fugro map of 12-13-95 <br /> GROUND WATER CONTOUR/CHEMICAL CONCENTRATION MAP <br /> C M Weber Enterprises Property CAMBRIA <br /> 141 North El Dorado Street 240-0821 <br /> Stockton, California <br /> PLATE <br /> Drawn By TNM Date 11-Sep-98 Approved By Date -lS-Irs <br />