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B BEND IN BEND IN SECTION <br /> OFA-N1CTION SECTION <br /> OFA-A' I Bj <br /> MW 2R MW-3 <br /> V-2 ro 20' V3 MW-9 V-4 pro)2 M V-8 MW-11 0 <br /> rol 15 MW 14 <br /> 10- <br /> 7 <br /> Imrm <br /> CLAY/S1LT <br /> FORMER UNDERGRO D CLAY/SILT 10 LEGEND <br /> p STORAGE TANK COMP PEA GRAVEL EXCAVATION BACKFILL <br /> NamIQ tm�ID t14�Fm mm MW 14 GROUNDWATER MONITORING WELL LOCATION <br /> CLAYSAND AND DESIGNATION <br /> -20 <br /> tdrR9! tmGm V 2 SOIL VAPOR EXTRACTION WELL LOCATION <br /> 10 CLAWS AND DESIGNATION <br /> 0 <br /> dlp tmQm prvl PROJECTED ONTO LINE OF SECTION IN FEET <br /> 4 <br /> CLAY its :fAa4 30 m <br /> m xssi tem 1 STATIC GROUNDWATER LEVEL 7 30-96 <br /> LL m <br /> Z 20 O ;ems TPH gBENZENE CONCENTRATION IN SOIL IN <br /> z � � � � � � PARTS PER MILLION(ppm) <br /> � ? O <br /> c 10-,TPHg ISOCONCENTRATION CONTOUR IN ppm <br /> w CLAY/SILT y I� NOT DETECTED <br /> -30 c <br /> ?- - — HISTORIC HIGH GROUNDWATER LEVEL <br /> A 2-89 <br /> CLAY/SIL7 tu1m� SCREENED INTERVAL(1 YP) 50 z ?---- HISTORIC LOW GROUNDWATER LEVEL <br /> SAND PACKED INTERVALtmrtm 10-92 <br /> -40 !mom m <br /> CLAY/SILT m <br /> r CALCULATED VERTICAL AND HORIZONTAL <br /> RADIUS OF INFLUENCE OF SOIL VAPOR <br /> --------- - -_----- � EXTRACTION WELLS <br /> CLAYEY --- - ----- 6D <br /> 50 SAND/SAND <br /> - GLAY <br /> SAND <br /> CLAY/SILT 70 <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 /> OFHYDROCARBONS REVISED NOVEMBER 29 1995 <br /> FORMER CHEVRON SERVICE STATION 9-1818 <br /> PACIFIC SCA G 45 East Harding Way at EI Dorado Avenue FIGURE <br /> ENVIRONMENTAL HORIZONTAL 1'=20* Stockton,Calilomia 5 <br /> GROUP INC VERTICAL 1'=10' PROJECT <br /> GEOLOGIC CROSS-SECTION B-B'-BEFORE SVE SYSTEM OPERATION(NOVEMBER 1990-NOVEMBER 1992) 320 133 713 <br />