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Y S ECOR Logged By: Date Drilled: Drilling Contractor Project Name: Method/Equipment: Boring Number: CASCADE 76 Station 2787245. R.P 3/18/05 DRILLING Stockton ,California HOLLOW STEM AUGER B-4 Boring Surface Groundwater Depth(ft.): Total Drive Drop Diam.(in.): Elev.(ft.): NOT ENCOUNTERED Depth(ft.): %%1.(Ibs.): Dist.(in.): 8 30.5 140 30 � w _ > _ Well ° E s 3 Description a w Construction Concrete ASPHALT Neat Cement AIR KNIFE 5 5 SILT(ML): Dark yellowish brown(10YR 4/4), fine grained sand, 0.0 B-4 9 low plasticity,dry, firm,no odor(0,0, 100) @5' 10 10 8 10 SILT(ML): Dark yellowish brown(IOYR 4/6),fine grained sand, 0.0 B-4 10 low plasticity,dry,soft,no odor(0, 10,90) @10' 15 10 I I SAME AS ABOVE 0.0 B-4 12 @15' 20 10 -------------------------------- 10 POORLY GRADED SAND(SP): Brown(IOYR 4/3),fine grained 0.0 B-4 10 sand,dry, loose,no odor(0,95,5) @20' 25 20 ----------- — -- --- — — ———— — 21 SANDY SILT(ML): Dark yellowish brown(10YR 3/4), fine grained 0.0 B-4 20 sand,dry,soft,no odor(0, 15,85) @25- 30 16 SILTY SAND(SM): Dark yellowish brown(10YR 3/4),fine grained 15 sand dry,medium dense no odor, 0 85 15 0 0 @30' 35- 40- 45- 50— 'Me 5404550The substrata descriptions above are generalized representations and based upon visual/manual classification of cuttings and/or samples obtained during drilling. Predominant material types shown on the log may contain different materials and the change from one predominant material type to another could be different than indicated. Descriptions on this log apply only at the specific location at the time of drilling and may not be representative of subsurface conditions at other locations or times. Project No. 77CP.67245.00.0003 Date 3/17/2005 Log of Boring CP2787245 B1-6-1.GPJ Figure LOG OF BOREHOLE (sheet I of 1)