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i <br /> Trees <br /> • Median MW_8 <br /> (<O 50) <br /> EAST HAMMER LANE <br /> Sidewalk <br /> r — — — — — — — — — — — — — — — — <br /> Plonter <br /> I � <br /> pop�� <050) •� <br /> o I <br /> Planter �r y I <br /> I1I 50oe00so s s I <br /> 500 <br /> MW-7 <br /> vw-s&s (<00II) <br /> 16, 0 g-3 <br /> MW-5 MW-1/(<050) <br /> 1,70W 2 <br /> y � (3,00 <br /> S <br /> MW-2 2) W <br /> �III <br /> W <br /> - & <br /> I G <br /> (<0 50) (2,900) - <br /> - J <br /> Station Z <br /> VW-7&8 � ' Building c LU <br /> (2 800) I 0.I W <br /> I Concrete I _J <br /> Pad I <br /> a <br /> . I Planter Y <br /> I <br /> I Driveway I ; <br /> (Two—way Traffic) I i <br /> o <br /> I Mw-it ! <br /> III <br /> (<1 0) MW-3*. I <br /> (<O 50) <br /> NORTH I Porking Parking <br /> 0 40 L — — — — — — — — — — — — — I <br /> Approximate Property Boundary <br /> Approximate Scale In Feet <br /> EXPLANATION. <br /> MW-5+ Groundwater Monitoring Well (13,000) Benzene Concentrations Measured <br /> In Parts Per Billion <br /> SW-1 0 Sparge Well Line Of Equal Concentration Of <br /> MW-1/� Groundwater Monitoring Well And `5000 Benzene Measured In Parts Per <br /> VW-1&2 Vapor Extraction Well ~Billion <br /> VW-3&4 O Dual Vapor Extraction Well # Not Used To Construct Contours <br /> Source Figure Modified From Drawings Provided Wells Sampled 6/19/01 <br /> By EVAX Technologies Inc And Sterile Co <br /> _ HORIZON ENVIRONMENTAL INC. <br /> . BENZENE ISOCONCENTRATION MAP <br /> BEACON STATION NO 3641 r� <br /> Project Number 1641 42 Drown By D Alston/C 8 1210 EAST HAMMER LANE 3 <br /> Prepared By R smith Date 0e/01 STOCKTON, CALIFORNIA <br /> Reviewed By G Barker Revised Dote <br />