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1 SECOR <br /> Intemauonol Incorporated <br /> Logged By Date Drilled Drilling Contractor Project Name Method/Equipment Well Number <br /> WEST ARCO#4932 SPLIT SPOON <br /> CM 3/15/02 HAZMAT STOCKTON,CA HOLLOW STEM AUGER EW-1 <br /> See"Legend to Lags"for Boring Surface Groundwater Depth{ft) Total Drive Drop <br /> sampling method Diam(in) Elev(ft) 28 5 FIRST Depth(ft) wt(lbs) Dist(in) <br /> classisting methods ae and laboratory <br /> testing 8 11.83 TOC T 28 STABILIZED 500 140 30 <br /> � <br /> x <br /> Well 3 Description <br /> Construction <br /> TRAFFIC7-inches asphalt <br /> RATED Base rock <br /> ' WELL,BOX SILTY CLAY with SAND (CL) very dark grayish brown <br /> mix <br /> (10YR3/2),fine-grained sand,moderate plasticity,stiff,moist <br /> ¢ (0,15,30,55) <br /> ' SANDY SILT(ML) brown(10YR5/3),with clay,fine-grained sand, <br /> • GROUT low plasticity,hard,moist,subangular blocky soil structure(0,30,65,5) 2 <br /> 5 15 <br /> 17 <br /> • 19 <br /> ' o � <br /> 10 17 2 <br /> 17 <br /> _b b 20 <br /> A b <br /> ' 0 0 <br /> z 15 16 Same as above,faint chemical odor 69 EW1 <br /> 18 @ 15, <br /> ' v � 19 <br /> r s <br /> BENTONITT <br /> ' SEAL, <br /> SAND <br /> 20 18 Same as above,strong chemical odor 315 <br /> ' 21 <br /> 23 SILTY SAND(SM) dark yellowish brown(10YR4/4),fine-grained <br /> 6" sand,medium dense,moist(0,75,25,0) <br /> DIAMETER, <br /> 0 020" 18 SANDY SILT(ML) yellowish brown(10YR5/4),fine-grained sand, 714 <br /> STAIIVI FSS 20 hard,moist,strong chemical odor(0,40,60,0) <br /> STEEL 25 <br /> WRAP <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 /> ' <br /> Project No 77BP 43287 00 0040 Date 5/29/02 PR Log of Well <br /> 4932EW 1 GPI Approved by <br /> LOG OF BOREHOLE <br /> Figure (sheet I Of 2) <br />