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S ECOR <br /> Logged By: Date Drilled: Drilling Contractor Project Name: Method/Equipment: Bonng Number: <br /> CASCADE 76 Station 2787245 <br /> R.P 3/18/05 DRILLING Stockton ,California HOLLOW STEM AUGER B-6 <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): NOT ENCOUNTERED Depth(ft.): wn.(Ibs.): Dist.(in.): <br /> 8 50.5 140 30 <br /> o <br /> Well a z <br /> y 3 Description w <br /> Construction <br /> Concrete ASPHALT <br /> Neat Cement FILL MATERIAL <br /> 5 2 SILT(ML): Dark yellowish brown(IOYR 4/6),fine grained sand, 0.0 B-6 <br /> 5 low plasticity,dry,no odor,(0, 10,90) @5' <br /> 9 <br /> 10 12 <br /> 17 SAME AS ABOVE 0.0 B-6 <br /> 20 @10' <br /> -------------------------------- <br /> 15 9 SILTY SAND(SM): Dark grayish brown(10YR 4/2),fine grained <br /> 13 sand,low plasticity,dry,blue staining,strong odor,(0,85, 15) 4.1 B-6 <br /> 11 @15' <br /> -------------------------------- <br /> 20 7 NO RECOVERY @ 20' <br /> 9 0.0 B-6 <br /> 11 @20' <br /> -------------------------------- <br /> 25 20 SILT(ML): Olive brown(2.Sf 4/3), low plasticity,moist,very <br /> 19 soft, no staining,moderate odor,(0,0, 100) 80.0 B-6 <br /> 20 @25' <br /> 30 15 <br /> 17 SILT(ML): Dark bluish gray(GLEY 2 4/1), low plasticity,dry,very 17.2 B-6 <br /> 17 soft, blue staining,strong odor,(0,0, 100) @30' <br /> 35 13 SILT(ML): Dark yellowish brown(IOYR 4/4),fine grained sand, <br /> 14 low plasticity,dry,very soft,no staining,slight odor,(0, 10,90) 50.6 B-6 <br /> 13 6.8 @35' <br /> B-6 <br /> 40 @35.5 <br /> SILT WITH SAND(ML): (0, 15,85) 6.8 B-6 <br /> @40 <br /> 45 SAME AS ABOVE:No odor 4.1 B-6 <br /> @45' <br /> 50 SAME AS ABOVE:Dark grayish brown(IOYR 4/2) <br /> 0.0 B-6 <br /> @50' <br /> The substrata descriptions above are generalized representations and based upon visual/manual classification of cuttings and/or <br /> samples obtained during drilling. Predominant material types shown on the log may contain different materials and the change from <br /> one predominant material type to another could be different than indicated. Descriptions on this log apply only at the specific location <br /> at the time of drilling and may not be representative of subsurface conditions at other locations or times. <br /> Project No. 77CP.67245.00.0003 Date 3/17/2005 Log of Boring <br /> CP2787245 BI-6-LGPJ Figure <br /> LOG OF BOREHOLE <br /> (sheet 1 of 1) <br />