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<br /> Logged By: Date Drilled: Drilling Contractor I Project Name: Method/Equipment: Well Namhr. Logged By: Date Drilled: Drilling Contractor Project Name: Method/Equipment: Well Numbs.
<br /> STTC-Ozone Well Install Air Rotary STTC-Ozone Well
<br /> Install Air Rotary
<br /> C.M. 10/16/03 Cascade Drilling Stockton,California Casing Hammer OS-16B C.M. t0/16M Cascade Drilling Stockton,California Casing Hammer OS-16B
<br /> Boring Surface Groundwater Depth Total Drive Dray Boring Surface Groundwater Depth TOW Drive Dray
<br /> Dimn.(in.): Elev.(fl.): Y 14.5 First Water Depth(IL): wt.(lbs.): DuL(tnJ: Diam.(in.): Elev.(R.): .7 14.5 First Water Depth(ft.): wt.(Ibs.): Disl.(tn.):
<br /> 8 41.5 140 30 8 41.5 140 30
<br /> Well p Z Well m Ei
<br /> Description Description Construction Y a rofK
<br /> rn u7g vi
<br /> .Traffic Rated SILTY SAND(SIM:brown(IOYR 5/3),fine grained 12 POORLY GRADED SAND WITH SILT(SP-SM)•dark 320 25' 1120
<br /> Well Box sand,medium dense,damp,(0,80,20). 22 greenish gray(IOGY 3/1),fine grained sand,medium dense,
<br /> 37 wet moderate hydrocarbon odor,(0,90 10). 366
<br /> .; __ ________ _____ ____ SILTY SAND(SM):dark greenish gray(LOGY 3/1),fine
<br /> ELASTIC SILT(MH)•dark grayish brown(1 OYR 4/2), grained sand,very dense,wet,moderate odor,(0,80,20).
<br /> fine grained sand,stiff,damp,moderate plasticity,(0,10,90).
<br /> 5 FAT CLAY(CH):dark grayish brown(23Y 4/2),very 0 30 _
<br /> stiff,damp,high plasticity,(0,0,I00). Bentonite 8 -- -- 666 30 1140
<br /> 12 SILTY SAND(SM):dark greenish gray(toGY 3/1),fne
<br /> 20 grained sand,medium dense,wet,moderate to strong 739
<br /> hydrocarbon odor,(0,75,25).
<br /> 3/4'SCH.80 #3 Sand As above,fine-medium grained sand.
<br /> PVC
<br /> Grout 10 6 As above,dark greenish gray(10Y 4/1),stiff,moist,faint 53 ` 2"Sparge 35 6 As above,moderate to strong hydrocarbon odor,large 3430 35' 1320
<br /> 10 hydrocarbon odor. 10.5' 1030 Tip 17 fragments of decaying wood. (over
<br /> 17 ELASTIC SILT WITH SAND(MR):dark greenish grey 1199 29 range)
<br /> (10Y 4/1),fine grained sand,very stiffto hard,moist,
<br /> moderate plasticity,moderate hydrocarbon odor,(0,25,75).
<br /> Q Bentonite
<br /> IS 10 As above,dark greenish gray 5GY 3/1,grce g y( )very stiff,moist ro 6660 I S' 1050 40 12 SANDY ELASTIC SILT(MH):dark greenish gay(100 1432
<br /> 216 71/1),
<br /> orseparate phase hydrocarbon sheen,strong hydrocarbon 6285 20 3/1),fine gained send,very stiff,moist to wet,moderate 40.5' 1400
<br /> AT CLAY C •dark rcenish IOGY 4/I,herd, (over 32 lastici moderate hydrocarbon odor,0 0 70. I 1180
<br /> ( H)• B gma3'( ) I FAT CLAY(CH):dark greenish gray(5BG 311),hard,
<br /> oist,high plasticity,strong hydrocarbon odor,(0,0,100). range) Innoist,high plasticity,moderate hydrocarbon odor, j
<br /> IL000Lo� —————————————————j
<br /> 20 12ANDY ELASTIC SILT dark greenish 45
<br /> (MR): g gray(SGY 3030 20' 1]00
<br /> 22 fine grained sand,very stiff,moist to wet,medium
<br /> 50lastici strop hydrocarbon odor,0 30 70.
<br /> @4" AT CLAY WITH SAND(CH):greenish gray(10GY
<br /> 11),fine grained sand,hard,moist,partially cemented by
<br /> aliche,high plasticity,strong hydrocarbon odor,(0,20,80).
<br /> riller reports silt prior to 25'sample.
<br /> The substrata descriptions above are generalized representations and based upon visual/manual classification of cuttings and/or L�n
<br /> bstrata 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 es 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 redominant material type to another could be different than indicated.Descriptions on this log apply only at the specific location
<br /> at the time oCdrilling end may not be representative ofsubsurface conditions at other locations or times. time of drilling and may not be representative of subsurface conditions at other locations or times.
<br /> Project No. 770T.43673.06.0007 Date 11/19/04 Log of Well Project No. 770T.43673.06.0007 Date 11/19/04 Log of Well
<br /> OSIB-16B.GP1 Figure OSIB-I6B.GP1 Figure
<br /> LOG OF BOREHOLE LOG OF BOREHOLE
<br /> (sheet 1 of 2) (sheet 2 of 2)
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