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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 10/31/03 Cascade Drilling Stockton,California CAL Split Spoon OS-21 <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): $Z 9.5 First Water Depth(ft.): wt.(lbs.): Dist.(in.): <br /> 8 19.5 140 30 <br /> � p � <br /> c <br /> Well y z <br /> s 3 Description ca <br /> Construction [a 0 m o cd <br /> a � � <br /> Traffic Rated <br /> Well Box <br /> Grout <br /> o. v <br /> g 5 FAT CLAY(CH):black(10YR 2/1),stiff,moist,high <br /> 5 plasticity,faint hydrocarbon odor,(0,0,100). 43 OS-21 1150 <br /> 5 @5' <br /> b: <br /> a:: a <br /> 10 7 SANDY FAT CLAY(CH):dark grayish brown(2.5Y <br /> 7 4/2),fine grained sand,stiff,moist to wet,strong plasticity, 132 OS-21 1200 <br /> . Bentonite 8 (0,30,100). @ 10' <br /> Chips <br /> Sand <br /> 15 7 FAT CLAY(CH):dark greenish gray(5G 4/1),very stiff, 264 <br /> 8 moist,high plasticity,moderate hydrocarbon odor, 390 OS-21 1210 <br /> 7. 2"Sparge <br /> 10 (0,0,100). @ <br /> Tip 7 ELASTIC SILT WITH SAND(MH):dark greenish gray 302 <br /> 10 (IOGY 4/1),fine grained sand,very stiff,moist,moderate <br /> 10 plasticity,moderate hydrocarbon odor, 0 25 75 . <br /> FAT CLAY(CH):dark greenish gray(5G 4/1),very stiff, 108 <br /> moist,high plasticity,moderate hydrocarbon odor, <br /> 20 00100 . <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 1-33.GPJ Figure <br /> LOG OF BOREHOLE <br /> (sheet I of I) <br />