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6 <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-20 <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Di am.(in.): Elev.(ft.): $Z 9.5 First Water Depth(ft.): wt.(lbs.): Dist.(in.): <br /> 8 19.5 140 30 <br /> > E <br /> Eo n E <br /> Well n z F= <br /> 3 Description Q 2 <br /> Construction Q o <br /> M <br /> Traffic Rated <br /> Well Box <br /> Grout <br /> o. v <br /> g 5 FAT CLAY(CH):black(IOYR 2/1),stiff,moist,high <br /> 7 plasticity,faint hydrocarbon odor,(0,0,100). <br /> 7 OS-20 1100 <br /> @5' <br /> d <br /> ° <br /> 10 7 SANDY FAT CLAY(CH):dark grayish brown(2.5Y 180 <br /> 5 4/2),fine grained sand,stiff,moist to wet,strong plasticity, 305 OS-20 1110 <br /> Bentonite 6 (0,30,70). @10' <br /> Chips <br /> Sand _____________________ _ <br /> 15 10 FAT CLAY(CH):dark greenish gray(5G 4/1),very stiff, <br /> 6 moist,high plasticity,moderate hydrocarbon odor, 364 OS-20 1120 <br /> 7 (0,0,100). 321 @ 15' <br /> 2"Sparge <br /> Tip <br /> ELASTIC SILT WITH SAND(MH):dark greenish gray 313 <br /> (IOGY 4/1),fine grained sand,very stiff,moist,moderate <br /> -�lasticity,moderate hydrocarbon odor, 0 25 75 . 104 <br /> FAT CLAY(CH):dark greenish gray(5G 4/1),very stiff, <br /> 20 moist,high plasticity,moderate hydrocarbon odor, <br /> 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 /> OS1-33.GPJ Figure <br /> LOG OF BOREHOLE <br /> (sheet 1 of 1) <br />