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MW-5 <br /> mA (<0.50) <br /> a <br /> • o <br /> PRESCILLA'5 9 ROOSEVELT <br /> CLFJ�NING ELEMENTARY <br /> SERVICES SCHOOL <br /> `—— Overhead Electric Li`o <br /> g4 <br /> MW-4� <br /> (<0501 <br /> Sh <br /> m4 <br /> ` 1 E4ST MA/N STREET <br /> 1 <br /> �I <br /> 4 a.s <br /> � s <br /> 50 1 <br /> 5 000x(5,800) <br /> 1 rz' IRIES ('' --MW-2 1 <br /> MW-10 CONCRETE <br /> (yg,004) t Overhead Electric Line <br /> 1 \I<0.50 �l0 J 0 MW-6/ II I _ - <br /> VW41VW-5lVW-6 (5,800) M .12 (D* W <br /> V -1NW-21VW-3 92 <br /> 1 <br /> - . <br /> �_ \ x(5,800),(28,000) 1 <br /> 1 \ NSER , . MW�8(<0.50) 1 <br /> AS-1 <br /> 1 (21) -IMW-3(10.50) 1 <br /> .B-3 1 <br /> 1 UNDERGROUND 1 1 <br /> MW-11Q 7 STORAGEF �_- .13 4 11 <br /> (1.3) <br /> \\ REMEDIATION <br /> 8-1• \ TRENCH 1 1 <br /> \ 5 11 tiNC' ................•�� 1 <br /> 1 MW-1 \ (MW-7)0 k 1 <br /> MW-9 \ASPHALT <br /> 1.1(<0.50) <br /> 1 <br /> 1 ��L�seW;-uo1 1 <br /> 1 CDIRT Y <br /> 11 1�E�R��RSY <br /> LEGEND: <br /> NoRTH <br /> 0 MW-9 GROUNDWATER MONITORING WELL • <br /> Q VW-6 VAPOR EXTRACTION WELL <br /> -B4 SOIL BORING <br /> )� AS-1 AIR SPARGE WELL <br /> (15,0013) 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 06127/01 <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 /> Protect Number: 1474.44 Drawn By:M.LaCoste BEACON STATION NO.3474 3 <br /> Prepared By: C.Roth Date:06123101 3440 EAST MAIN STREET <br /> Reviewed By:G.Barker Revised Date; STOCKTON.CALIFORNIA <br />