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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 11/5/03 Cascade Drilling Stockton,California CAL Split Spoon OS-44 <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): SZ 9.5 First Water Depth(ft.): wt.(lbs.): Dist.(in.): <br /> 8 19.0 140 30 <br /> z <br /> Well <br /> s Z <br /> a: � a I— <br /> s Description Q v <br /> Construction 0 s a n. <br /> ^y rn <br /> Traffic Rated <br /> Well Box <br /> I <br /> o: o. <br /> Grout <br /> 5 5 FAT CLAY(CH):black(IOYR 2/1),stiff,damp,high 0 <br /> 5 plasticity,faint hydrocarbon odor(0,0,100). 6 OS-44 1210 <br /> 5 @5' <br /> o` <br /> As above,color change to dark gray(5Y-4/1). <br /> ; <br /> �Z --------------------------- <br /> 10 5 CLAYEY SANDY SILT(ML):brown(1 OYR 5/3),fine 37 <br /> 7 grained sand,stiff,moist to wet,moderate plasticity,faint 42 OS-44 1220 <br /> ' Bentonite 5 h drocarbon odor 0 20 50 15 . @10' <br /> Chips ELASTIC SILT WITH SAND(MH)dark greenish gray <br /> (10Y 4/1),stiff,moist,high plasticity,strong hydrocarbon <br /> odor,(0,10,90). <br /> Sand ------------------------- <br /> 15 5 FAT CLAY(CH):dark greenish gray(10Y 4/1),stiff; 284 <br /> 6 moist high plasticity,stron hydrocarbon odor 0 0 100 . 346 OS-44 1230 <br /> 7. 2" Sparge 6 SANDY ELASTIC SILT(MH):dark greenish gray(5GY @15' <br /> A. 4/1),fine grained sand,stiff,moist to wet,moderate <br /> Tip 6 plasticity,hydrocarbon sheen,strong hydrocarbon odor, 310 <br /> 7 %0,30,70). <br /> 7 FAT CLAY(CH):dark greenish gray(10Y 4/1),stiff, <br /> 7 moist,high plasticity,strong hydrocarbon odor,(0,10,90). 75 <br /> 20 <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-44-51.GPJ Figure <br /> LOG OF BOREHOLE <br /> (sheet ] of 1) <br />