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f 20 Apr 04 <br /> Sidewalk N <br /> EXPLANATION � � ,I; <br /> r e <br /> Shallow Zone Groundwater Monitoring Well 0 O <br /> __________ _________ _ ________ ____ U *+ 2 <br /> -- -- — — -` — ] Deeper Zone Groundwater Monitoring Well ,,��,, N <br /> u- <br /> *�.r C <br /> Groundwater elevation contour C <br /> in feet referenced to mean sea r COQ <br /> level(ft ms]) Arrows indicate <br /> approximate groundwater flow i Cc <br /> ------------------------------------------- direction (� V <br /> EAST FREI1 ONT STREET •E <br /> SS4 Well designation 0 <br /> -3447 Groundwater elevation,ft msl N V <br /> <0.50<0 5017 Benzene/MTBE/1,2-DCA concentrations <br /> 55=1�� __�__ _____—__�__ __ in groundwater in parts per billion(ppb) 0 <br /> -32 94 <br /> 3,3001<50/600 -' <x Not detected at reporting limit x <br /> {f ® Planter `" N <br /> 5-1-85 ❑ i ® � i Appfc ximate hydraulic gradient=0 0016 <br /> i <br /> Canopy <br /> /1\ (typ) ; <br /> ' I USTs ' <br /> \\ Former USTs,\\ <br /> 5-4 S^61 m <br /> Waste Oil Tank // '3284 <br /> 2.93 5-4-83 <br /> \ <br /> <0 50/92f2 6\i/ ®) 0 501<0.50/6.8 Q <br /> 5-3-84 <br /> i <br /> -3291 Q ��\ ` ❑ ❑ i E� <br /> <0 501<0 50146 <br /> Station Building and ------ -----------r <br /> Lube Bays \ I F <br /> 3 <br /> Dispenser Island V90 F <br /> �(typ) i <br /> k a <br /> -32 92 1 V 5-2-85 -a s i O <br /> <0 501<0.50/45 S_2 <br /> -329 (/) <br /> N PJNCON S'T E , <0 501<0.50/2.6 <br /> va ID <br /> Scale(ft) r 0 <br /> LL <br /> U <br /> 0 '15 30 60 FIGURE � � � <br /> o <br /> 2 <br /> L � <br /> Q <br /> V] N U? <br />