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HORIZON ENVIRONMENTAL INC. <br /> 4970 Windplay Drive, Suite 5 Boring No. SB-1 <br /> EI Dorado Hills, California 95762 <br /> (916) 939-2170 -- Fax: (916) 939-2172 <br /> Drilling Company: All Well Abandonment Project No.: 1641.01 <br /> Date Drilled: 10/22/14 Site: CST 3641 <br /> Drilling Method: Hollow Stem Auger Location: Stockton, CA <br /> Sampling Method: Split-Spoon Geologist: Rexford Smith <br /> E a Soil Description/ <br /> a ° Soil <br /> LL z <br /> aE Comments Boring <br /> oC a o v E � <br /> L L � – <br /> E m c <br /> ) G <br /> CL <br /> 0 <br /> Asphalt 3 inches/concrete 6 inches/aggregate base <br /> 1 SILTY CLAY (CL): dark gray, stiff, medium plasticity, moist, no <br /> 2 4S1D ------------------------------ <br /> 3 8-inch diameter <br /> bore hole <br /> 4 — <br /> 7 <br /> LO neat cement <br /> 5 9 5 <br /> U') 12 18 11 0 6 SILTY SAND (SM): yellowish-brown, very fine to medium-grained <br /> sand, trace clay, medium dense, moist, no odor <br /> 7 <br /> 8 <br /> 0 <br /> 10 9 <br /> 10 10 10 <br /> m 16 18 15 0 11SILTY SAND (SM): grayish-brown, mottled yellow brown, very <br /> fine to fine-grained sand, trace clay, medium dense, moist, <br /> 12 no odor <br /> 13 <br /> 14 <br /> 15 20 50/5 18 8 0 15 <br /> 16 SILTY SAND (SM)'. dark brown, very fine to fine-grained sand, <br /> trace clay, very dense, moist, no odor <br /> 17 <br /> 18 <br /> 19 <br /> 20 N 50/6 6 6 0 20 <br /> U) 21 SILTY SAND (SM): brown, very fine to fine-grained sand, very <br /> 22 <br /> dense, moist, no odor <br /> 23 <br /> 24 <br /> CN 23 SILTY SAND (SM): dark yellowish-brown, very fine to medium- <br /> 2550/5 11 10 0 25 grained sand, trace caliche, very dense, slightly moist, no odor <br /> m 26 <br /> 27 Total Depth = 25 feet <br /> 28 <br /> 29 <br /> 3 30 <br /> SB-1: Page 1 of 1 <br />