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Cambria Environmental Technology, Inc BORING/WELL LOG 270 Perkins Street Sonoma, California 95476 Telephone (707) 935-4850 Fax (707) 935-6649 CLIENT NAME Shell Oil Products US BORINGIWELL NAME MW-7 JOBISITE NAME Shell-branded Service Station DRILLING STARTED 04-Mar-05 LOCATION 2375 West Grant Line Road Tracy, California DRILLING COMPLETED 04-Mar-05 PROJECT NUMBER 1661 WELL DEVELOPMENT DATE(YIELD) NA DRILLER Gregg Drilling GROUND SURFACE ELEVATION 75 14 ft above msl DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 24 82 ft above msl BORING DIAMETER 8" SCREENED INTERVAL 5 to 20 fb LOGGED BY J Gerbrandt DEPTH TO WATER(First Encountered) 10 Oft 04-Mar-05 REVIEWED BY J Neely, PG 6927 DEPTH TO WATER(Static) 10 9 ft(04-Mar-05) 1 REMARKS In the vacant field west of the Shell-branded service station along the 1-205 onram U QE ~ w w �"�+ u a ti= WELL DIAGRAM m 0 E w le Q p SOIL DESCRIPTION Q a a U N n 0 UD SILT ML dark brown(10YR 313),moist 35%clay, 55%silt, 10%fine to coarse sand Plant roots present Portland Type III I Bentonite Seal @ 4 0'-35%clay,40%salt 10%fine to coarse sand, 15% Monterey 5 fine gravel Sand#2112 ML @ 4 5'-35%clay,55%silt, 10%fine to coarse sand 00 MW-7- @ 5 0'-very dark grayish brown(1 OYR 312),40%clay, 5 0' 55%silt,5%fine sand Plant roots present . s 10— @ 10 0'-dark yellowish brown(10YR 414),wet,30%clay, 00 MW-7- 111 .160%silt 10%fine to medium sand 113 Silty SAND(SM),yellowish brown(10YR 514),wet, 10 0' SM 20%clay,25%silt,55%fine sand 2"-diam , 133 0 020"Slotted Schedule 40 PVC 15 SILT with Sand fML),yellowish brown(10YR 514),wet, 00 MW-7- 20%clay,55%silt,25%fine to medium sand 150, ML 00 MW-7- 20 0 om of 20 0' 20 20 0'-15%clay,60%silt 25%fine sand Boring @ 20 ft J Q W Q a' C7 i$ z Z Z O i Y , O a Q D J J �Ju $ PAGE ] OF ]