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FORMER UNDERGROUND STORAGE TANKS <br /> t/ T1 10 000 GALLON REGULAR UNLEADED GASOLINE TANK <br /> t/ T2 8 DOD GALLON REGULAR UNLEADED GASOLINE TANK <br /> T3 8 000 GALLON REGULAR UNLEADED GASOLINE TANK <br /> /* T4 BpOD GALLON REGULAR UNLEADED GASOLINE TANK <br /> TO 8,000 GALLON SUPER UNLEADED GASOLINE TANK <br /> /4 I <br /> /t NEW UNDERGROUND STORAGE TANKS <br /> t T8 10 000 GALLON GASOLINE TANK <br /> ^ /t/ T7 8 DDO GALLON GASOLINE TAN( <br /> �` T8 8"GALLON GASOLINE TANK <br /> ,>C. t/w� T9 6 DOD GALLON GASOLINE TANK <br /> SEPTIC TANK <br /> LEACHING AREA �`S] <br /> / VW-11X,, <br /> X, , <br /> VW 5 +Q <br /> [NS) <br /> +t�0[NS] ! -. e0 50 <br /> t� <br /> VW-1060 <br /> [SO 50] <br /> 'T 43 T4 43 <br /> +� L1 <br /> 8000 <br /> t/a ` 5`a p, i ODO <br /> 1 <br /> TB 490 J <br /> i <br /> t STATION <br /> BULDING VW-2 i n <br /> 33 000 T9 VW-6 Q <br /> /t 9700 VW 3 <br /> 350 VW 12Q MW B � I`1, 1 �Qq <br /> / \i 5,00 <br /> + �SI 0 270 <br /> VW-4 MW-9 <br /> ]NS] [NSI <br /> W-1 <br /> V � <br /> V W-1 � \ <br /> C/ DVS] MW4] \ <br /> INS] [NS] �Ms] <br /> MW 5 <br /> VW-7(F) VW.14 sI <br /> [NSI O[hIs] VW-16 <br /> [PIs]l <br /> �VW-1 5 <br /> MW-6 [NS] <br /> [NS] <br /> �Mw-7 <br /> •[NS]Q [NS] <br /> VW 13 i <br /> WATER SUPPLY <br /> INS) <br /> WELL �� i� rpo <br /> VW-17 <br /> i <br /> 05 f MN <br /> c050 i [PIS]S) MW�2i� MW 1 � <br /> O S(I <0 60 <br /> <0 60 PA O[Ns] <br /> */ VW-19 <br /> i <br /> Cdf <br /> rt <br /> O[NSI QINSJ <br /> VW-20 VW-18 <br /> LEGEND W <br /> z MW 1 MONITORING WELL LOCATION <br /> +Q VW-1 VAPOR EXTRACTION WELL LOCATION <br /> Q CONDUCTOR CASING D 50 FT <br /> WATER SUPPLY WELL <br /> X50TPH AS GASOLINE CONCENTRATION IN MICROGRAMS PER LITER(ug/L] <br /> �O 501 BENZENE CONCENTRATION IN ug/L SCALE <br /> 50.50 J MTBE CONCENTRATION IN Ug/L FIGURE 3 <br /> NS NOT SAMPLED GROUNDWATER ANALYTICAL SUMMARY <br /> SAMPLES COLLECTED ON 312&02 1 st QUARTER 2002 <br /> TPHG AND BENZENE ANALYZED BY EPA METHOD SOISIB020 <br /> MTBE ANALYZED BY EPA METHOD 8280 ARCO SERVICE STATION NO 6160 <br /> 25775 SOUTH PATTERSON PASS <br /> TRACY, CA <br /> PROJECTNO DRAWN BY <br /> D000l40 M L V19102 <br /> FILE NO PREPARED BY Delta <br /> ARCO 81!10 M G <br /> REVISION NO REVIEWED BY Environmental <br /> 1 A Consultants, Inc <br />