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09 Sep-02 <br /> EXPLANATION <br /> Groundwater monitoring well .O B-5 - -- -------- - - - <br /> B-6 <br /> Vapor extraction well ND120' ND120' <br /> E <br /> o Soil boring location <br /> Soil sample location <br /> ------------------- <br /> ND/15' Benzene concentrations in soil in parts <br /> per nullionfDepth in feet,in known <br /> E Existing U5Ts <br /> ND Not detected, detection limit unknown <br /> <g Not detected at detection limit x <br /> ------ ---- ----- -- --------- -- <br /> -------------------- ------------- <br /> Note Soil samples collected to the top 20 feet of soil <br /> B-8O +Q B-7 <br /> ND/20' -------------------------------------- ND120 <br /> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- <br /> E E <br /> Canopy and E <br /> Dispenser E <br /> � E <br /> Islands E <br /> E � <br /> E � <br /> E { <br /> TR-2A® <br /> MW-2 } ' TR-1 ♦ ND <br /> E <br /> ND/10' , ND <br /> � E <br /> /E ♦ E <br /> � E ♦ E <br /> ND ` <br /> B-1 <br /> ND/20' � <br /> TI-N I �♦ <br /> 'i E <br /> oil t <br /> MW4 <br /> �0 0005114' E <br /> ! T1-S -!,' - � - - -T2-N-,' - - - --- - - - - Nj�- - - 7-- - <br /> - - - - - - - - - 1 <br /> 061 ® t ,r_ 0 025 ® T3-N; ;*— B4 <br /> 0.037 0 07120' <br /> ♦ \, �> T4-N® <br /> ________________ o,h__� o.Q2Q <br /> - -------- B-2 ♦� ,���- -1'---------- +VEW-1 <br /> - ---- - ------ND/10 ♦� - �A+�. -_ - 013110' <br /> � r <br /> ®T3-S <br /> N <br /> 0.076 <br /> VEW-2 , ' MW-3 <br /> 0 021115' ND/15' <br /> T2-S B-30 032' <br /> Scale(ft} 10 ND/15' <br /> 0 5 10 20 <br /> 0 <br /> Former Shell Service Station/ Benzene Iso-concentration Map - <br /> Pershing Oil G 1989 to 1991 <br /> 4445 N Pershing Avenue <br /> Stockton, California C A M B R I A <br />