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(<o.5) <br /> Mw-5 <br /> PRISCILLA'S a ROOSEVELT <br /> CLEANING ELEMENTARY <br /> SERVICES SCHOOL <br /> MW-4 <br /> 00.50) <br /> 0.5 <br /> j <br /> 5.0 <br /> E4STMA/NS EE <br /> 50 <br /> 500 <br /> 5.000 <br /> '1 <br /> ORES (6,700) <br /> MW-10 CONCRETE MW-214,000) <br /> 1 (<0.50) [� (14,000) . <br /> VW.4lVW-5NW-6 `" MW-6/ <br /> (2,000) MW-12 0VW-1lVW- 3.,.. <br /> (6, 00) (32,000) <br /> DI <br /> ISLA AS-1 _ MW-B(<0.5D) <br /> (540) -1 MW-3(<0.50) <br /> .B3 <br /> VW- U RGROUND,_ <br /> 7 STORAGE` _ <br /> '1 MW-11TANKS- •B-0 <br /> 1 (NS) _ <br /> 1 REMEDIATION <br /> B-1• TRENCH 1 <br /> lLL1tNG <br /> MW-1 {<0.50) 1 <br /> %(<0.50) MW-7 <br /> Mw-9 ASPHALT <br /> 11(<0.50) 1 <br /> .1 -1 <br /> .1 1 <br /> 1 � <br /> DIRT <br /> PAY <br /> SCU <br /> LEGEND: <br /> MW-9 GROUNDWATER MONITORING WELL <br /> QVW-6 VAPOR EXTRACTION WELL <br /> •B-4 SOIL BORING <br /> 2 AS-1 AIR SPARGE WELL <br /> (6,000) BENZENE CONCENTRATIONS MEASURED IN PARTS <br /> PER BILLION(PPB) <br /> --5.0-� LINE OF EQUAL CONCENTRATION OF BENZENE <br /> MEASURED IN PPS <br /> NS NOT SAMPL80 <br /> WELLS SAMPLED 12!3!01&12!4101 <br /> 0 50 FT <br /> SOURCE:FIGURE MODIFIED FROM DRAWING PROVIDED BY ACTON,MICKELSON,VAN DAM,INC. <br /> AND SURVEY BY RON ARCHER CIVIL ENGINEER,INC. APPROXIMATE SCALE <br /> HORIZON ENVIRONMENTAL INC. BENZENE ISO-CONCENTRATION FIGURE <br /> =� MAP <br /> Project Number. 1474.44 Drawn By:M.LaCoste BEACON STATION NO. 12474 <br /> Prepared By: C.Roth Date:1102/02 3440 EAST MAIN STREET <br /> Reviewed By:R.Smith Revised Date: STOCKTON,CALIFORNIA <br />