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j <br /> PORTER AVENUE <br /> MW-1 <br /> Former UST 7 61 <br /> Location MW-2 (ND} <br /> 6782 (ND) <br /> (ND) <br /> MW-5 - N <br /> 6797 — .� _ _ _ Existing UST <br /> •�, ! Location <br /> (ND) -- <br /> (ND) i VEW- — VEW-1 N- E E <br /> # NA rNA L <br /> (2,400) (55,05-Sep-96) <br /> ' <br /> c (310) i ' <br /> CANOPY AND E z <br /> DISPENSER W <br /> ISLANDS <br /> Scale <br /> -a-MW-3 MW-4 i f� <br /> 6780 67 72 -♦i U <br /> (4,400} (12,Oflfl) Q 0 25 50 100 Feet <br /> (1,400) (1300} a+ 1 loch=SD Feet <br /> l � <br /> MW-6 <br /> 6765 <br /> Parking Area (1,000) <br /> (380) <br /> EXPLANATION <br /> BUILDING <br /> Ground Water Monitoring Well <br /> Vapor Extraction Well <br /> Ground water elevation contour <br /> in feet referenced to Site Datum <br /> MW-7 Arrows indicate approximate flow <br /> 6766 direction <br /> (5,600) <br /> (1,200) <br /> 6782 Ground water elevation in feet <br /> (ND) Benzene concentration in ppb <br /> ND=Not Detected <br /> (9 1) MTBE concentration in ppb <br /> Notes Monitoring performed on 24-Feb-99 <br /> Approximate hydraulic gradient=0 002 <br /> Base map from Fugro map of 1-10-94 <br /> PLATE GROUND WATER CONTOUR/CHEMICAL ANALYTICAL MAP I"AMBRIA <br /> Shell-branded Service Station <br /> 2 6131 Pacific Avenue 240-0854 <br /> Stockton, California <br /> Drawn By WE Date 22-Apr-99 Approved By Date <br />