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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-56 <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): 9.5 First Water Depth(ft.): wt.(Ibs.): Dist.(in.): <br /> 8 21.0 140 30 <br /> v <br /> Well <br /> 3 Description Q � 2 <br /> Construction v = s a a <br /> o m <br /> o <br /> Traffic Rated <br /> Well Box <br /> Grout <br /> 5 5 FAT CLAY(CH):black(IOYR 2/1),stiff,moist,high 10 <br /> 5 plasticity,faint hydrocarbon odor(0,0,100). <br /> 5 <br /> __ <br /> 10 5 SANDY SILT(NIL).-dark gray(5Y 4/1),stiff,moist to <br /> 5 wet moderate t)lasticity,faint hydrocarbon odor, 0 30 70 . 17 900 <br /> 6 ELASTIC SILT(MH).-very dark gray(5Y 3/1),fine 109 <br /> grained sand,very stiff,moist,high plasticity,faint <br /> Bentonite hydrocarbon odor,(0,10,90). <br /> Chips <br /> --------------------------- <br /> 15 5 FAT CLAY(CH):dark greenish gray(5GY 4/1),stiff, 128 <br /> Sand 5 moist,high plasticity,strong hydrocarbon odor(0,0,100). 306 OS-56 910 <br /> 5 @ 15' <br /> 7 SILTY SAND(SM):dark greenish gray(10Y 3/1),fine 33 <br /> 2" Sparge 7 grained sand,medium dense,moist to wet,strong <br /> Tip 9 hydrocarbon odor (0 65 3Q._ <br /> 5 POORLY GRADED SAND(SP):dark gray(N 4/0),fine 18 <br /> 5 grained sand,medium dense,wet,faint hydrocarbon odor, <br /> Sand 20 7 0 100 0 . l l <br /> 7 ELASTIC SILT(MH):dark greenish gray(10Y 4/1),fine <br /> 7 grained sand very stiff,moist,high�lasticity,�0 5 95� <br /> 9 ----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 />