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Get#ler—Ryan, Inc. Log of Boring MW-12 . PROJECT Tosco (Former BP) Service Station No 11192 LOCATION 1403 Country Club Boulevard, Stockton, CA GR PROJECT NO 14024508 CASING ELEVATION DATE STARTED 12/04/02 WL (ft bgs) 250 DATE 12/04/02 TIME 1030 DATE FINISHED 12/04/02 WL (ft bgs) 1508 DATE 01/03/03 TIME 1720 DRILLING METHOD 8 in Hollow Stem Auger TOTAL DEPTH 315 feet DRILLING COMPANY Cascade L7rilling GEOLOGIST Jeremy Smith w M * 1-_ 0 U) Z J N a LLw w GEOLOGIC DESCRIPTION WELL DIAGRAM a U LaQ 0 Q C2 J Q Q ¢ b m U] U] (D In Concrete and base rock CL CLAY (CL) - brown (10YR 5/4), moist, moderately plastic 90% clay, 10% sand C 60 a m O v V rn CH CLAY (CH) - brown (10YR 2/2), moist, stiff, plastic, c 5 3$ 100% clay 4 7 13 MW-12-6 5 CL CLAY (CL) - brown (10YR 4/3), moist, stiff, ML moderately plastic 100% clay _ Y _ a CLAYEY SILT (ML) - brown {10YR 4/3), moist to very _ moist, hard, 60% silt, 30% clay, 10% sand 10 102 >100 MW-12-115 = CL CLAY (CL) - brown OOYR 4/3), moist to very moist, — hard, non-plastic, 100% clay = 7 3 >100 U = o — b a ro a — U � a 20 0 9 >100 OFv — Color changes to brown (10YR 5/4), becomes moist, o — moderately plastic w Sc CLAYEY SAND WITH GRAVEL (SC) - brown (10YR 5/1), r� wet, hard, 40% sand, 40% clay, 20% gravel N 25 - >100 — CL CLAY (CL) - light gray (10YR 5/1), moist, hard, — moderately plastic 80% clay, 10% sand, 10% gravel o CLAY WITH SAND (CL) - gray (56 5/1), very moist, n = hard, moderately plastic, 80% clay, 20% sand 30 - 45 IIIA IIIIJ . Bottom of boring at 315 feet bgs (* = converted to equivalent standard penetration blows/foot) 35 JOB NUMBER 140245 08 Page 1 0f 1