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Settler-Ryan. Inc. Log of Boring U-12 *' PROJECT Former Unocal Service Station No 0187 LOCATION 437 East Miner Avenue, Stockton, CA GR PROJECT NO 240042 05 CASING ELEVATION DATE STARTED 051091JO WL (ft bgs) 3885 DATE 05/10/00 TIME 1450 DATE FINISHED 05/09/00 WL (ft bgs) DATE TIME DRILLING METHOD 8 in Hollow Stem Auger TOTAL DEPTH 120 8 feet DRILLING COMPANY Woodward Drilling GEOLOGIST David Herzog U.) F o WELL DIAGRAM o w w L) GEOLOGIC DESCRIPTION .J J 2 U F- 3 U_ a_ a ix 0 �- m LO Ln CD U1 M/FIL ASPHALT - 3 inches thick T SILTY GRAVEL (GM) - very dark grayish brown (10YR, 3/2), moist, fine to coarse gravel, brick fragments fill material CH CLAY (CH) - very dark brown (10YR 2/2), moist very 5 0 >100 U--12-5 5 ML hard, plastic 100% clay, trace of fine sand SILT (ML) - yellowish brown (10YR 5/4), damp very hard, 100% slit, trace of fine sand, moderate calcium carbonate cemented, trace of iron oxide staining ML SILT WITH SAND AND CLAY (ML) - light olive brown (2 5Y 5/3), moist, very stiff, slightly plastic 70% silt, 15% fine sand, 15% clay, abundant iron oxide staining and nodules (<2 mm), trace of mica �Q 0 28 U-12-11 ML SILT (ML) - brown (10YR 4/3), moist, very hard slightly plastic 95% silt, 5% fine sand, abundant iron ' oxide staining and nodules, few fine mica U 15 0 28 U-12-15 5CL 0 �r c m m 3 Q) SM SILTY SAND (SM) -- t7 brown (10YR 5/6), moist, v very dense 70% fine sand, 30% silt, trace of fine mica m 20 0 38 U-12-21 25 0 37 U-12-25 5 Color changes to light olive brown (2 SY 5/4), abundant iron oxide staining ML SANDY SILT (ML) - dark yellowish brown (10YR 4/4), saturated, very hard 60% silt, 40% fine sand, trace of fine mica 30 0 41 U-12-31 35 JOB NUMBER 240042 05 Page 1 of 4