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vto <br /> Wp►tE �•� .`'� Building <br /> •�' Existing Underground% 5 <br /> • Storage Tanks / MW-d <br /> — „x(140) - W (<O 50) <br /> I e W-9 Z <br /> 2- a <br /> SB-4 MW-3 J <br /> i MW-2 f 3 AS 1/(270) _ EXPL&WION. <br /> I Ste: <br /> (<0.50) I Dispenser i xVW 1 A8-1/ <br /> MW-4 I Islands 12 i V E N i N VW-1/� Vapor Extraction Well <br /> �( a i1 <br /> I <br /> '-(<O 50) i i ' VW-2 <br /> • 1 0 � � I <br /> $B-7 }( i E i $B-7• Soil Boring <br /> SB-S i E _ a 'I Former Underground MW-10+ Groundwater Monitonng Well <br /> Canopy��----- i i i I i �- Storage Tanks <br /> it o SB-SX3 Unsuccessful Soil Boring Attempt <br /> �• Concrete i i E = 4 i V 3 <br /> °o Station <0 50 •--*—! ��..J i` it (270) Benzene Concentrations Measured <br /> 31 Building o In Parts Per Billion <br /> _Wood Fence MW-7 (<O 50) SB-1• <br /> (<O 50)- •r•Approximote Property Boundary �y <br /> ;-1— <br /> _ Line Of Equal Concentration Of <br /> i M (<O 50) � <br /> Billion Measured In Parts Per <br /> B <br /> I <br /> Wells Sampled 08/31/99 <br /> Wood Fence <br /> 0 30 N0P TH <br /> HORIZON ENVIRONMENTAL INC. BENZENE FIGURE <br /> Approximate Scale in Feet 18000NCENTRATION MAP <br /> Project Number 141942 Drown er D Alston/Ca FORMER BEACON STATION NO 419 3 <br /> Prepared M Souverville Date 09/99 2350 WATERLOO ROAD <br /> source Figure Modified From surm Provided Pa By STOCKTON, CALIFORNIA <br /> By Ron Archer Civil Engineer, Inc Reviewed By K Mateak Revised Dote <br />