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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-47 <br /> Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> Diam.(in.): Elev.(ft.): �Z 9.5 First Water Depth(ft.): wt.(Ibs.): Dist.(in.): <br /> 8 21.0 140 30 <br /> o <br /> Well S ; z E~ <br /> Y x 3 Description 2 <br /> Construction A Q <br /> � a <br /> Traffic Rated <br /> Well Box <br /> {� Y <br /> o: a. <br /> Grout <br /> 5 5 FAT CLAY(CH):black(IOYR 2/1),stiff,damp,high <br /> 5 plasticity,faint hydrocarbon odor(0,0,100).' 13 1310 <br /> 5 <br /> ---------------------------- <br /> 10 5 ELASTIC SILT WITH SAND(MH):dark greenish gray <br /> 7 (10Y 4/1),fine grained sand,stiff,moist to wet,moderate 216 <br /> 9 plasticity,strong hydrocarbon odor,(0,25,75). 153 <br /> Bentonite <br /> Chips <br /> 15 5 <br /> Sand 8 SANDY ELASTIC SILT(MH);dark greenish gray(5GY 296 OS-47 1330 <br /> 8 3/1),fine grained sand,very stiff,moist,moderate plasticity, 361 @15' <br /> 6 stron hydrocarbon odor(0,3 0,70). <br /> 6 FAT CLAY(CH):dark greenish gray(5GY 3/1),fine 369 <br /> e h <br /> g <br /> 8 grained sand,stiff,moist,high plasticity,strong <br /> 2"S ar drocarbon odor 0 10 90 . 96 <br /> Tipp 8 SILTY SAND(SM):dark greenish gray(5GY 3/1),fine <br /> 5 rained sand medium dense wet moderate odor, 0 70 30 . <br /> 20 SANDY SILT(ML):dark greenish gray(5GY 3/1),fine <br /> grained sand,stiff,moist to wet,low plasticity,moderate <br /> 1­Nhydrocarbon odor, 0 30 70 . <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 1 of I) <br />