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0 <br /> S ECOR <br /> Logged By: Date Drilled: Drilling Contractor Project Name: Method/Equipment: well Number: <br /> STTC-Ozone Well Install Air Rotary <br /> C.M. 10/20/03 Cascade Drilling Stockton,California Casing Hammer OS-12B <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): SZ 11 First Water Depth(ft.): wt.(lbs.): Dist.(in): <br /> 8 39.0 140 30 <br /> 4) <br /> > <br /> Well <br /> 4Z x Description <br /> Construction n <br /> Q a <br /> a <br /> high plasticity,moderate hydrocarbon odor,(0,10,90). <br /> SANDY ELASTIC SILT(MH):dark greenish gray(5GY 3/1),fine grained sand, 122 <br /> stiff,moist to wet,moderate plasticity,moderate hydrocarbon odor,(0,30,70). <br /> SILTY SAND(SM):dark grayish green(5G 2.5/2),fine grained sand,medium <br /> Bentonite dense,wet to moist,moderate hydrocarbon odor,(0,60,40). <br /> 30 1?OORLY GRADED SAND WITH SILT(SP-SM):dark greenish gray(IOGY 3/1), <br /> #3 Sand fine grained sand,medium dense,wet,moderate hydrocarbon odor,(0,90,10). <br /> WELL GRADED SAND(SW):greenish black(5GY 2.5/1),fine-course grained <br /> 2"Sparge sand,well graded,dense,wet,moderate hydrocarbon odor,(0,100,0). <br /> TiP 35 <br /> 85 <br /> 40 <br /> 45 <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. 770T.43673.06.0007 Date 11/19/04 Log of Well <br /> OS IB-16B.GPJ Figure <br /> LOG OF BOREHOLE <br /> (sheet 2 of 2) <br />