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• • r <br /> RLOO ROAD <br /> w ASE MW-11 ` ♦ Building <br /> ( I <br /> NS) (5)\ W <br /> existing Underground a EXPLAHAT10N. <br /> Storage Tanks 0 —J MW-8 AS-1/(<050) VW-1/ Air Sparge/ <br /> ___ <br /> MW-8 Q) 0- VW-2 Vapor Extraction Wel! <br /> (<0 50) { i a A8-3/+ Air Sparge Well <br /> l (NS) ( � W MW-11 + Groundwater Monitoring Well <br /> I MW-2 (NS)AS-1/ <br /> Dispenser ( VW-1/ N (NS) Not Sampled <br /> I +MW-4 (NS) Islands _VW-2 <br /> (NS) I i i E i—�I (20) Benzene Concentrations Measured <br /> E y i iI In Parts Per Billion <br /> 1 i CPE CL i,i III ` Line Of Equal Concentration Of <br /> c61,L � I i E i SO_ Benzene Measured In Parts Per <br /> �I <br /> Billion <br /> Canopy�t------� i i E 1 i a 11Former Underground <br /> -01 Concrete i E 1 i 1 °3 Storage Tanks Not Used to Construct Contours <br /> °o Station �___-! i____i i____i1> Wells Sampled 12/12/05 <br /> 31 Building MVV-7 MW-1 i <br /> I Wood Fence (NS) (NS) <br /> _ r Approximate Property Boundary MW-10 <br /> MW-5 <br /> 1 (<O 50) <br /> I NORTH <br /> 1 _ Wood Fence_ _ _I 0 30 <br /> Approximate Scale In Feet <br /> $ORIZON ENVIRONMENTAL INC. BENZENE FIGURE <br /> ISOCONCENTRATION MAP <br /> Project Number 1419 48 Drawn By D Aiston/c 8 FORMER BEACON STATION NO 12419 �] <br /> Source Figure Modified From Survey Prowdad Prepared By K Uptak Date 06/05 235D WATERLOO ROAR �7 <br /> By Ron Archer Civil Engineer, Inc Reviewed By R Smith Re%nasd Date <br /> srOCK170N, CALIFORNIA ' <br />