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yVATERLOO ROAD -------__ _ <br /> ~`_ ---- <br /> ——— ^1 }"�� BUILDING <br /> /I — MW 110 �\ \ <br /> .0p _%�I (DRY) OAS 3 �\ <br /> / _ SII It 3y* , MW 8 <br /> I—e _ /oo / ti <br /> / (<0 50) <br /> r — MW 9 I LEGEND <br /> ! I <br /> J { MW 8 1 (701* 0(72) 1 MW 10 GROUNDWATER MONITORING WELL <br /> I (s 5) AS.2'1 AS-I/ <br /> I { k I I N Q� W 3 I #VW 1! VAPOR EXTRACTION WELL LOCATION <br /> MW 2 Qy I I (12 000)AS 11 {550) VW 2 <br /> 0 50) DISPENS R VW 11 <br /> MI114 (< <br /> I I ISLANDS I VW 7—— I 8 <br /> N r-- -� 4S 2 AIR SPARGE WELL LOCATION <br /> r l I - l�y�i r--- I E <br /> (<o Soy <br /> (12 000) BENZENE CONCENTRATIONS MEASURED IN PARTS <br /> a I 4p <br /> OPER BILLION(PPB) <br /> m i g <br /> U ERGROW D LINE OF EQUAL CONCENTRATION OF BENZENE <br /> I { I �O I X50-- <br /> S ORAGET I I MEASURED IN PPB <br /> O l w C{gNOPY J i i i i i i t I * NOT USED FOR CONTOUR CONSTRUCTION <br /> 1 l i i --�J <br /> a I tu STATION CO _— T—— 1- i WELLS SAMPLED 1 ftJ0101 <br /> w I LL —L'-————...—�..� — ` � <br /> L____J L____J L____JI u' <br /> (<0 50) {<0 501 r ASSUMED APPROXIMATE LATERAL EXTENT OF <br /> R I a MW 7 (<0�) L___J BENZENE IMPACTED GROUNDWATER <br /> 0 1 �` _ —— 0 MW 1 ;m MW 10 <br /> � I I WOOD FENCE —— — — —— —— — <br /> I MW 5(rl I <br /> I<U 50) <br /> x—x--x--I <br /> I <br /> WOOD FENCE <br /> 0 30 FT /V o Tf <br /> 14 —__H0RI70N 1, N\'1R0NN_1L_N I'A_1, INC BENZENE IN GROUNDWATER FIGURE <br /> ISO-CONCENTRATION MAP <br /> APPROXIMATE SCALE <br /> Project Number 1419 t3 Drawn By M LaCoste FORMER BEACON STATION NO 12419 8 <br /> SOURCE FIGURE MODIFIED FROM SURVEY PROVIDED Prepared By C Roth Dale 1211"1 2350 WATERLOO ROAD <br /> BY RON ARCHER CIVIL ENGINEER INC Reviewed By R Snulh Revised Dale 312v02 STOCKTON CALIFORNIA <br />