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PROJECT NUMBER: FIELD BOREHOLE LOG BOREHOLE NUMBER 197046 B2 (MW-2) PROJECT NAME. WFB Stockton TOTAL DEPTH(FT): 70' ' LOCATION: Stockton,California DRILLING Co.: Gregg Drilling GROUND SURFACE ELEVATION: 20' DRILLING METHOD:Marl M-10 STATIC WATER LEVEL(bgs) DRILLING PARTY: Greg Drilling Crew Depth (ft) 60' FIELD PARTY: Dan Goodwin Time 2.10 REVIEWED BY: Joe Montoya, R.G., C.E.G. DATE BEGUN: 2/12/97 DATE COMPLETED: 2/12/97 Date 2/12/97 LW z ' > m o z z ; ¢ LU U U 30 < LITHOLOGY DESCRIPTION U0.0 ' B-2-1.5 0 ppm SM i y an the grained, dark brown, 5.0 77= slightly moist no odor B-2-5 100% 0 ppm CL Silty Clay: light brown, no odor, slightly ' 2 moist 10.0 g B-2-10 80% [t 0 ppm Olive brown, slightly moist, very stiff 12 15.0 B-2-15 100% 0 ppm SM Silty Sand: fine grained, light brown, slightly 14 moist, no odor, medium dense 20.0 ' B-2-20 40 ppm No odor, medium dense 12 25.0 B-2-25 80% 0 ppm SW Sand: tine to medium grained, light and 0 dark grains, loose, no odor, medium dense ... 30.0 .. B-2-30 80% 0 ppm ML Silt: brown, slightly moist, very stiff 0 35,0 B-2-35 80% >2,000 Clayey Silt: olive brown, slightly moist, 2 ppm hydrocarbon odor/no staining 40.0 ,: B-2-40 80% 1,500 Silty Sand: fine grained, micaceous, black to 1 PPM gray, hydrocarbon odor, very stiff 45.0 B-2-45 100% >2,000 ML Sandy Silt: Fine grained sand, green to ppm grayish brown mottled, hydrocarbon odor, 50.0 hard B-2-50 100% >2,000 Gray to greenish brown mottled, strong odor, PPM slightly moist 55.0 B-2-55 100% 4 >2,000 M Silty Clayey Sand: fine grained, brown to 0 ppm gray, slightly moist, hydrocarbon odor, very 60.0 dense B-2-60 16 1,300 l PPM 65.0 70.0 IHI