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{ <br /> BEND IN BEND IN SECTION <br /> B INTERSECTION-_ � /SECTION� <br /> OF A A' �1I,'''' � Bl <br /> � MW 2R I MW 3 <br /> V 2 pro 20' V 3 MW 9 V-4 prol 2 MW-8 MW-11 0 <br /> rot 15' MW-14 <br /> io <br /> L7' <br /> Bnwp <br /> CLAY/SILT <br /> FORMER UNDERGRO D CLAY/SILT <br /> 10 LEGEND <br /> 0 STORAGE TANK COMP PEA GRAVEL-EXCAVATION BACKFILL <br /> WIND <br /> BB�G BamQ Y�CLAYEY SAND Npm MW 14 MONITORING WELL LOCATION <br /> AND DESIGNATION <br /> ]� 20 <br /> BG1m Boehm Boom V 2 SOIL VAPOR EXTRACTION WELL LOCATION <br /> 10 CLAYS AND DESIGNATION <br /> O <br /> / prof PROJECTED ONTO LINE OF SECTION IN FEET <br /> LU SAND r CLAYQ p s 30 at = STATIC GROUNDWATER LEVEL 7 30-96 <br /> y B02m � � BGCID <br /> m <br /> K <br /> Q TPH-gIBENZENE CONCENTRATION IN SOIL IN <br /> PARTS PER MILLION(ppm) <br /> O BORm 10 u m llsi - - — - - - Imm - ? - - - - � - - - - - m <br /> wo SANDED = -40 i -1D,TPH-g ISOCONCENTRATION CONTOUR IN ppm <br /> LU �� CLAY/SILT N dQ NOT DETECTED <br /> 30 C <br /> n <br /> -- - HISTORIC HIGH GROUNDWATER LEVEL <br /> n 289 <br /> SCREENED INTERVAL(TYP) m <br /> CLAY/SlLT tl°m° 50 z 9---- HISTORIC LOW GROUNDWATER LEVEL <br /> SAND PACKED INTERVAL BORm 7170 <br /> m 10-92 <br /> CLAY/SILT <br /> r CALCULATED VERTICAL AND HORIZONTAL <br /> RADIUS OF INFLUENCE OF SOIL VAPOR <br /> ---------- ------- 7- --- EXTRACTION WELLS <br /> CLAYEY _ --- --_-- 60 <br /> 50 SAND/SAND % tmSlR <br /> _ <br /> y <br /> CLAY/SILT <br /> 60 NOTE CROSS-SECTION DEPICTS ANALYTICAL DATA COLLECTED PRIOR TO <br /> OPERATION OF THE SOIL VAPOR EXTRACTION(SVE)SYSTEM(BLACK PRINT) AND <br /> ANALYTICAL DATA FROM SOIL BORINGS(GRAY PRINT)THAT DEFINES THE EXTENT <br /> OF HYDROCARBONS REVISED NOVEMBER 29 1995 <br /> PACIFIC FORMER CHEVRON U S.A.SERVICE STATION 9-1819 <br /> SCALE 45 East Harding Way at El Dorado Avenue FIGURE <br /> ENVIRONMENTAL $ <br /> Stockton CaliforniaGROUP INC HORIZONTAL 1`=20 <br /> VERTICAL 1"=10' GEOLOGIC CROSS-SECTION B-B'-BEFORE SVE SYSTEM OPERATION(NOVEMBER 1990-NOVEMBER 1992) PROJECT <br /> 320-133 7B <br /> �II� <br />