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sECOR <br /> InternatronalIncorporated <br /> =BH <br /> ate Drilled Drilling Contractor Project Name Method/Equipment Well Number <br /> GREGG ARCO#4493 HOLLOW STEM AUGER <br /> 519/02 DRILLING STOCKTON,CA SPLITSPOON �W�10MM <br /> See"Legend to Logs"for Boring Surface Groundwater Depth(ft) Total Drive Drop <br /> sampling method, Dram(in) Elev(ft) 17FIRST Depth(ft) wt(lbs) Dist(in) <br /> classifications and laboratory <br /> testing10 545 140 30 <br /> methods <br /> Well a, o <br /> Description <br /> Construction <br /> CLAYEY SILT (ML) brown(7 5YR4/4),firm,very moist,low plasticity,no 0 <br /> hydrocarbon odor(0,10,50,40) <br /> 0 o SILTY SAND(SM) light brown(7 5YR6/3),fine-grained sand,medium <br /> dense,saturated,no hydrocarbon odor(0,80,20,0) <br /> o a 30 <br /> 0 MW10 <br /> @ 30' <br /> SANDY SILT(ML) grayish brown(10YR5/2),fine-grained sand,stiff,low <br /> BENTONM plasticity,saturated,no hydrocarbon odor(0,35,60,5) <br /> SEAL <br /> SAND#3 <br /> MW-10M 35 0 <br /> SCREEN <br /> 2"0 020 <br /> 0 <br /> SANDY CLAY(CL) brown(10YR5/3),fine-grained sand,firm,moist,low <br /> plasticity,no hydrocarbon odor(0,40,5,55) <br /> 40 <br /> SILTY SAND (SM) grayish brown(10YR5/2),fine-grained sand,medium <br /> dense,saturated,no hydrocarbon odor(0,75,25,0) <br /> BENTONM <br /> SEAL <br /> 45 <br /> 0 MW10 <br /> MW-10D Color change to reddish brown(5YR4/4),saturated,no hydrocarbon odor @46 <br /> SCREEN (0,75,25,0) <br /> 2"0 020 No recovery <br /> 0 MW10 <br /> @51' <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 77BP 43036 00 0320 Date 5/31/02 PR Log of Well <br /> 4493MW l0 GPJ Approved by <br /> LOG OF BOREHOLE <br /> Figure (sheet 2 of 3) <br />