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DATE 04/13/1999 14 47 1 PRJ# SB 70 4 DRAWING prof\ca\othergm\sb—gm\unocol\sb000070 0001\UNO—C2 CHECKED CULLEN APPROVED CULLEN DRAFTER STILES <br /> / <br /> 000 <br /> .000 <br /> Approximate Property Boundary / // <br /> Former Waste 4 <br /> (<O 550) OJ Tank (0 88X � <br /> Former (removed 1967) / /� � J I <br /> Station �r W <br /> penser � � <br /> Budding I— ' <br /> ��j_1 Island � <br /> /0 52y/ i ]i Q / <br /> . Former Ultlergr(te d "l 1 1000 Z /NP-2 <br /> former Waste Stora a`,Tc nk vc �/ /Od Tank rte` —r (rem7ed 19 /� U— 1 (15) , <br /> (removed 1992) ) "' 1 1 4,20)y _ OF <br /> Form <br /> .01 <br /> * (072) r Dispen r N 1 0-* �/ + U-8 <br /> �_1 I p N— <br /> Former r Islan 1 <0 50) f <br /> Underground J V—Z4, I I NP-1 1 / <br /> Storage Tanks ( ) 1 <br /> 930 O 0 40 <br /> removed 1992) (<O 0) _4. (�)' 41 <br /> Scale in Feet <br /> EXPLANATION <br /> .40, ♦ GROUNDWATER MONITORING WELL <br /> O NESTED PIEZOMETERS <br /> 9 VAPOR EXTRACTION WELL <br /> EAST MINER AVENUE /' (<O 50) BENZENE CONCENTRATION <br /> l --- BENZENE CONCENTRATION CONTOUR <br /> // (NS) NOT SAMPLED <br /> / CONCENTRATIONS IN rug/L <br /> i # U-7 <br /> (<O 50) Sourer Figure MWfied From Drawing PmMed <br /> Pnrkmn By WUer—Ryon Inc <br /> ISO CONCENTRATION MAP, SHALLOW GROUNDWATER FIGURE <br /> ARCADIS BENZENE FEBRUARY 5, 1999 6.2 <br /> GERAGHTY&MILLER FORMER UNOCAL SERVICE STATION NO 0187 <br /> 437 EAST MINER AVENUE, STOCKTON, CA. <br />