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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 11/4/03 Cascade Drilling Stockton,California CAL Split Spoon OS-52 <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 21.0 140 30 <br /> Well a z <br /> x Description ca 2 <br /> Construction � 0. <br /> qc A <br /> a V) <br /> Traffic Rated <br /> Well Box <br /> . <br /> Grout <br /> 5 5 SILTY SAND(SM):dark greenish gray(l0Y 4/1),fine 21 <br /> 5 grained sand,medium dense,moist,faint hydrocarbon odor, 25 OS-52 1020 <br /> ` 6 0 75 25). @5' <br /> FAT CLAY(CH):black(IOYR 2/1),stiff,moist,high <br /> plasticity,low density,faint hydrocarbon odor(0,0,100). <br /> o . <br /> Q _________ _________________ <br /> 10 6 SANDY SILT(ML):very dark gray(5Y 3/1),fine grained 57 <br /> 6 As;drocarbon <br /> and,stiff moist to wet,moderate plasticity, <br /> 7 odor, 0 35 65 . p 4>moderate 37 O@ 10' 1030 <br /> ELASTIC SILT(MH):dark greenish gray(IOY 4/1),fine <br /> grained sand,very stiff,moist,high plasticity,moderate <br /> odor,(0,10,90). <br /> Bentonite <br /> Chips <br /> 15 6 282 <br /> 7 344 OS-52 1040 <br /> Sand 7 @ 15 <br /> 5 <br /> 5 —————————————— 135 <br /> 5 As above strong hydrocarbon odor. <br /> 2"Sparge 5 SILTY SAND(SM):dark greenish gray(10Y 4/1),fine 67 <br /> Tip 6 rained sand,medium dense,moist to wet,moderate <br /> g hydrocarbon odor, 0 65 35 . <br /> 20 5 POORLY GRADED SAND WITH SILT(SP-SM):dark 62 <br /> greenish gray(IOY 4/1),fine grained sand,medium dense, <br /> 5 wet,moderate hydrocarbon odor,(O 90,10�_______ <br /> 5 <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-33-57.GPJ Figure <br /> LOG OF BOREHOLE <br /> (sheet 1 of 1) <br />