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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. 10/16/03 Cascade Drilling Stockton,California Casing Hammer OS-14B <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): 11 First Water Depth(ft.): wt.(Ib,.): Dist.(in.): <br /> S 36.0 140 30 <br /> 0 <br /> Well <br /> Construction v Description o <br /> o a <br /> a <br /> strong hydrocarbon odor,(0,20,80). 2798 <br /> (over <br /> SILTY SAND(SM):dark greenish gray(5G 3/1),fine grained sand,medium dense, range) <br /> wet,moderate hydrocarbon odor,(0,70,30). 180 <br /> Driller reports sand. <br /> --------------------------------------- <br /> POORLY GRADED SAND WITH SILT(SP-SM):dark greenish gray(IOGY 3/1), <br /> Bentonite fine grained sand,medium dense,wet,moderate hydrocarbon odor,(0,90,10). <br /> #3 Sand 30 <br /> 2"Sparge <br /> Tip As above,increased grain size to fine-medium grained. <br /> 35 Sands heaved up 2'. <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 1 B-16B.GPJ Figure <br /> LOG OF BOREHOLE <br /> (sheet 2 of 2) <br />