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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 Hollow Stem Auger <br /> C.Melanion 11/6/03 Cascade Drilling Stockton,California CAL Split Spoon OS-41 <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): SL 9.5 First Water Depth(ft): wt.(Ibs.): Dist.(in): <br /> S 19.5 140 30 <br /> n <br /> Well „ y z i= <br /> 3 Description Q <br /> Construction ca Q <br /> aCn <br /> Traffic Rated <br /> Well Box <br /> 0. 0 <br /> e i <br /> Grout <br /> 5 5 FAT CLAY(CH):black(10YR 2/1),stiff,damp,high <br /> b: 5 plasticity,faint hydrocarbon odor(0,0,100). 0 OS-41 840 <br /> 5 @5 <br /> b' b:' <br /> 10 5 SANDY SILT(ML):dark grayish brown(2.5Y 4/2),fine 2 <br /> 7 grained sand stiff,moist to wet 0 30 70 . <br /> 6 FAT CLAY(CH):dark greenish gray(l0Y 4/1),fine 92 OS-41 850 <br /> Bentonite grained sand,stiff,moist,high plasticity,moderate odor, @ 10.5' <br /> Chips (0,10,90). <br /> Sand _ ___ <br /> 15 5 SANDY SILT(ML):dark greenish gray(10Y 3/1),fine <br /> 5 grained sand,stiff,moist,moderate plasticity,strong 299 OS 41 900 <br /> 2" Sparge 5 hydrocarbon odor 0 30 70 . 349 @15' <br /> Tip 6 FAT CLAY(CH):dark greenish gray(10Y 4/1),stiff, SPH <br /> 6 1m_oisih plastic istron&t rocarbon odor�,0 10D_J 102 <br /> 5 SILTY SAND(SM):dark greenish gray(5GY 3/1),fine <br /> 6 grained sand,medium dense,wet,SPH sheen,strong 56 <br /> 6 drocarbon odor, 0 70 30 0 . <br /> ,. <br /> FAT CLAY(CH):dark greenish gray(10GY 4/1),stiff, <br /> 5 moist hi h lasttct 0 0 100 . <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. Date 9/29/04 DWR Log of Well <br /> OS-33-57.GPJ Figure <br /> LOG OF BOREHOLE <br /> (sheet 1 of 1) <br />