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e <br /> I <br /> W A .0. 0. Building <br /> Opp ► Existing Underground <br /> Storage Tanks <br /> MW-8 <br /> _ ( ) <br /> r------I i Z <050 <br /> _r MW-8 J �- S�S Q - EXPLANATION <br /> (<O 50) I MW_S f� J AS-V <br /> Dispenser 000 Q VW-1/ Vapor Extraction Well <br /> I MW-2 I Islands AS-VVW-V 8_6 VW-2 <br /> MW-4 <br /> SB-3• ('k) I 4}0 I z _VW-_2t ho W SB-7• Soil Boring <br /> I 0 0 1 I E I 17 + (n <br /> (<050) I L h l h0 + E i i r MW-10+ Groundwater Monitoring Well <br /> SB-7• tX1 i j E ? I 3 I <br /> gg_8 i — I i '0/II ' 86-SX3 Unsuccessful Soil Boring Attempt <br /> f I , L i1 Former Underground <br /> m Cana �— i i I_ Storage Tanks Benzene Concentrations Measured <br /> �I <br /> Canopy — f (3,000) In Parts Per 81111on <br /> .D Concrete I I E i 3 <br /> °01 Station 94 i i 4_w ;w-. it> _ Line Of Equal Concentration Of <br /> 31 Building { ) MW-1 � Spo Benzene Measured In Parts Per <br /> I _Wood F nc MW-7 (*k _'0Z <br /> �sB-1•�_ _� Billion <br /> MW_ I A r *i to Prop Boupd6ry (0 S4) <br /> +(<0 50) , * Deeper Wells Not Used For <br /> — 9 Isoconcentration Map <br /> I _X XJ � <br /> Wood Fence I Wells Sampled 03/26/99 <br /> 0 30 NORTH <br /> HORIZON ENVIRONMENTAL INC. BENZENE <br /> FIGURE <br /> ISOCONCENTRATION MAP <br /> Approximate Scale In Feet <br /> Project Number 142942 Drawn By D Alston FORMER BEACON STATION NO 419 /] <br /> Source Figure Modified From Survey Provided Prepared By L Smith Date 05/99 2350 WATERLOO ROAD i7 <br /> By Ron Archer Civil Engineer, Inc Reviewed By X Mateik Revised Date STOCKTON, CALIFORNIA <br />