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/ (2.5) <br /> IN <br /> PFpelLLA!EANE Gs j 1 ROOSEVELT <br /> 1 ELEMENTARY <br /> / SERVICES ' SCHOOL <br /> Ov�ryead Ele�o LRa /' � <br /> 21 Wi-4 0 <br /> 4 � � <br /> r � <br /> III F 7r' S;rRor, I - _ <br /> 1 1 VW.1 .3 1 <br /> S,OOO I � <br /> �9 (7.600) 1 <br /> 1 MW-10` ~~ •MW-2—, <br /> 1� (1.4) 1 CON RETE �Ove�heatlElectricLine <br /> VW-4NW-&M6 lS1 MWS <br /> (5,200) MW-12 0 1~ <br /> \ (2.400) (36,000) 2. 1 <br /> 1; \ DENSER <br /> IS AS-1 %_%MW-8(<0.50) 1 <br /> \ (701 _ MW-3(50.50) 1 <br /> 1 \ 1 <br /> 1A, \ UNDERGROUND •813 1 <br /> j1 \ MW-11VW 7 1,STORKS X8.4 1 <br /> _ \ � 7/+.NKS 1 <br /> 111 \ (0,98) <br /> IJ B-1 \ REMEDIATION <br /> Il \ TRENCH 1 <br /> \ STAB ........ 1 <br /> gU1L01ttG ............�1 <br /> \ (<0.50)* MW-70 <br /> 1; 9W-9 ASPHALT <br /> 1 <br /> 1 <br /> (_D I RT <br /> LEGEND: NoRTN <br /> 0 MW-9 GROUNDWATER MONITORING WELL G� <br /> QVW-6 VAPOR EXTRACTION WELL <br /> •B-4 SOIL BORING <br /> 0 AS-1 AIR SPARGE WELL <br /> (38,000) BENZENE CONCENTRATIONS MEASURED IN PARTS <br /> PER BILLION(PPB) <br /> --5.0-- LINE OF EQUAL CONCENTRATION OF BENZENE <br /> MEASURED IN PPB <br /> DATA NOT USED FOR CONTOUR CONSTRUCTION <br /> (NS) NOT SAMPLED <br /> WELLS SAMPLED 0312"l <br /> e <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. <br /> APPROXIMATE SCALE <br /> HORIZON ENVIRONMENTAL INC. BENZENE ISO-CONCENTRATION FIGURE <br /> MAP <br /> "act Number:1474.44 Drawn By:M.LaCoste BEACON STATION NO.3474 �] ~ <br /> Prepered By:C.Roth Date:05/21101 3440 EAST MAIN STREET J <br /> Reviewed By:G.Barker Revised Date:OS/23101 STOCKTON,CALIFORNIA <br />