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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-40 <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): SZ 9.5 First Water Depth(ft.): wt.(Ibs.): Dist.(in): <br /> 8 19.5 140 30 <br /> > E <br /> Well . 3 a <br /> Construction a c Description A <br /> 0 <br /> a <br /> Traffic Rated <br /> Well Box <br /> Grout <br /> o. v <br /> g 5 FAT CLAY(CH):black(IOYR 2/1),stiff,damp,high plasticity,faint <br /> 5 hydrocarbon odor(0,0,100). <br /> 5 <br /> b <br /> o o <br /> i <br /> . ----------------------------------- <br /> 10 5 SANDY SILT(ML):dark gray(5Y 4/1),fine grained sand,very stiff,moist 0 <br /> 5 to wet,faint hydrocarbon odor(0,30,70). 1 <br /> 7 FAT CLAY(CH):dark greenish gray(LOGY 4/1),fine grained sand,very 83 <br /> Chips ite stiff,moist,high plasticity,product sheen,stringers of black staining,moderate <br /> Chips hydrocarbon odor(0,10,90). <br /> Sand <br /> 15 6 SANDY FAT CLAY(CH):dark greenish gray(LOGY 3/1),fine grained <br /> 6 sand,stiff,moist,moderate plasticity,strong hydrocarbon odor(0,30,70). <br /> 2"Sparge 6 SANDY FAT CLAY(CH):dark greenish gray (IOGY 4/1),fine grained 311 <br /> SPH <br /> Tip 5 sand,stiff,moist to wet,moderate plasticity,product sheen,strong <br /> 5 hydrocarbon odor 0 35 65 . <br /> g POORLY GRADED SAND(SP):greenish black(LOGY 2.5/1),fine to 58 <br /> 7 medium grained,medium dense wet 0 100 0 . <br /> 7 FAT CLAY(CH):dark greenish gray(LOGY 4/1),stiff,moist,high plasticity I I <br /> 20 9 O O,l00Z---_ <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-3343,52-57.GPJ Figure <br /> LOG OF BOREHOLE <br /> (sheet l of l) <br />