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Gettler—Ryan, Inc. Log of Boring U-21 PROJECT Former Unocal Service Station No 0187 LOCATION 437 East Miner Avenue, Stockton, CA GR PROJECT NO 240042 08 CASING ELEVATION 1197 Ft (MSL) DATE STARTED 11/03/00 WL (ft bgs) DATE TIME DATE FINISHED 11/03/00 WL (ft bgs) 2991 DATE 11/08/00 TIME DRILLING METHOD 8 in Hollow Stem Auger TOTAL DEPTH 120 feet DRILLING COMPANY Cascade Drilling GEOLOGIST Tony Mikacich UJ m z u) WELL DIAGRAM CL E z a GEOLOGIC DESCRIPTION 01ti ' CD a a a LU o o,- a m ca rn tc cn CL CLAY WITH SAND (CL) - strong brown (7 SYR 5/6) mottled with abundant dark brown, moist, hard 80% clay. 20% fine sand 6 0 36 U-21-6 5 ML CLAYEY SILT (ML) - brown (T SYR 4/3), moist, very stiff 70% silt, 30% clay, abundant calcite, trace of black organic matter 0 29 U-21-115 12— SM SANDIT WH SILT (SM) - brorwn (7 5YR 4/3), moist- - , dense 80% fine sand, 20% silt, abundant calcite mineral, trace of iron oxide staining 0 50 U-21-16 5 18 ML CLAYEY SILT (ML) - brown (7 5YR 4/2) mottled with light brown, moist, hard 60% silt, 40% clay, iron oxide o staining v v b a, 0 33 U-21-215 SM SAND WITH SILT (SM) - reddish brown (7 5YR 4/6) c 24 moist, medium dense 70% fine to medium sand, 30% silt, iron oxide staining 0 26 U-21-26 5 30 0 42 U-21-31 Color changes to brown (7 SYR 4/3), becomes wet dense trace of coarse sand Becomes 70% fine to coarse sand, 30% silt 36 0 34 U-21-36 5 ML CLAYEY SILT (ML) - olive brown (2 SY 4/3), moist, hard 70% silt, 30% clay, abundant iron oxide staining, SAND WITH SILT (SM) - brown (7 SYR 4/3), wet, very dense, 80% fine to medium sand, 20% silt, trace of coarse sand 0 >100 U-21-415 CL CLAY (CL) - light olive brown (2 5Y 5/3), moist, hard, 42 90% clay, 10% silt trace of calcite mineral JOB NUMBER 240042 08 Page 1 of 3