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RLOO Ro <br /> W P►�E Building <br /> W <br /> \ Z MW-6 <br /> fxisting Underground Q -�<0 5 EXPLANATION. <br /> Storage Tanks ��� J AS-1/ <br /> 1 VW-1/i' Vapor Extraction Well <br /> p------ MW-g VW-2 <br /> 1 S 2• (9 6) <br /> �r <br /> (<0 <br /> �+ SB-4 M 3 MW-10-� Groundwater Monitoring Well <br /> MW-2 <br /> 1 AS-1/ GSB-5 W (230) Benzene Concentrations Measured <br /> I N <br /> SB-3• (<O 50) C Dispenser 1 (2300} In Parts Per Billion <br /> I 4MW-4 Islands <br /> (<0 50 1 i �0� I i Line Of Equal Concentration Of <br /> } E it �Sp Benzene Measured In Parts Per <br /> I SB-7a x X50 i ? i ." Billion <br /> �, -- I E <br /> alae_ B-g i E' Former Underground <br /> a_ +I Wells Sampled 05/18/00 <br /> 0l Canopy — ---- iLayO Storage Tanks p <br /> I� <br /> Concrete <br /> ofi E I I it <br /> 0 Station <br /> 31 Bullurng MW-7 MW-1 L <br /> (<0 50) (<0 50) S8-1 . <br /> 1 Wood Fence R _ _ _ — W <br /> (<10) Approximate Property Boundary MW-10 NORrH <br /> MW-5 (<0 50) <br /> I A <br /> L _ Wood Fence— 0 30 <br /> — <br /> Approxlmate Scale In Feet <br /> HORIZON ENVIRONMENTAL INC BENZENE FIGURE <br /> ISOCONCENTRATION MAP <br /> Project Number 1419 43 Drawn By D Alston/CB FORMER BEACON STATION NO 419 <br /> Source Figure Moci ped From Survey Provided Prepared By R Smith Date 06/00 <br /> By Ron Ar,her Civil Engineer Inc Reviewed By G Barker Revised Date STOCOCWATERLOO ROAD KTON, CALIFORNIA <br />