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PORTER AVENUE <br /> MW-1 <br /> 6861 <br /> Former # 147 <br /> ( ) <br /> UST W-2 <br /> Location68 77 (614) <br /> \ (ND) <br /> MW-5 (15 2) <br /> 6876 ^-- - _ Existing UST <br /> ND Location <br /> (<5 Q) VEW-2 VEW-1 <br /> * NA SNA 1 <br /> (3,130) (55,05-Sep-96) <br /> (<1,250) <br /> CANOPY <br /> AND N <br /> DISPENSER <br /> ISLANDS <br /> 1 vw <br /> MW-3 - - MW-4 <br /> 6867 6806 U W <br /> (155) ---- (8,040) y <br /> \ (38 8) (<1,000) <br /> \ MW-6 <br /> 6841 Scale <br /> Parking (690) - <br /> • Area (2250) ' 0 25 50 100 Feet <br /> \^ , I Inch=50 Feet <br /> f � <br /> EXPLANATION <br /> BUILDING � <br /> b <br /> * Groundwater Monitoring Well <br /> / Vapor Extraction Well <br /> Groundwater elevation contour <br /> in feet referenced to Site Datum <br /> MW-7 Arrows Indicate approximate flow <br /> 6750 direction <br /> (6,540) <br /> (1,070} <br /> 6750 Groundwater elevation In feet <br /> (6,540) Ben/one concentration in ppb <br /> ND =Not Detected <br /> (1,070) MTBE concentration in ppb <br /> Notes Monitoring performed on 13-May-99 <br /> Base map from Fugro tnap of 1-10-94 Approximate hydraulic gradient=0 01 <br /> PLATE GROUNDWATER CONTOUR/CHEMICAL ANALYTICAL MAP f-1 A <br /> Sllell-branded Service Station 1 `] <br /> 6131 Pacific Avenue 241-0854 <br /> * 2Stockton, California <br /> Drawn By Ls Date 26-Jul-99 Approved By Date cif -4 <br />