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SECOR International Incorporated . Logged By Date Dnlled Drilling Contractor Project Name Nicthod/Equipment Well Number ARCO#4932 CAL MOD SPLIT SPOON CM 8/6/03 CASCADE STOCKTON,CA HOLLOW STEM AUGER EW-4 See"Legend to Logs"for Bonng Surface Groundwater Depth(ft) Total Drive Drop sampling method, Diam(in) Elev(ft) SZ 30 FIRST Depth(ft) wt(lbs} Dist(in) classifications and laboratory 12 NA 1 32 25 STATIC 410 140 30 testing methods u Well F- a o Description a Construction A q I 21SILTY SAND(SM) brown(1 OYR-414),fined grained sand, 0 1300 27 dense moist 0 75 25 0 24 SAND with gravel(SP),dark grayish brown(I OYR 412),fine grained sand,dense,moist,(5,95,0,0) 30 IAM23 SILTY SAND(SM) dark yellowish brown (IOYR-414), 0 1310 DIAMETER, 0 20 fine-grained sand,dense,moist,(0,70,30,0) STAINLESS STEEL WRAP 35 13 SAND(SP) dark brown(10YR-313), fine-medium grained sand, 116 1315 17 medium dense wet faint odor, 0 100 0 0 14 SANDY CLAYEY SILT(ML) olive gray(5Y-5/2),fine grained sand,very stiff,moist,moderate plasticity,faint odor,(0,25,35,45) THREADED END CAP 40 15 SANDY SILT w/CLAY(ML) olive brown(2 5Y-413),fined 30 1330 18 H grained sand,very stiff to hard,moist,moderate plasticity, 24 0 25 65 10 45 The substrata descriptions above are generalized representations and based upon visual/manual classification of cuttings and/or samples obtained during drilling Predominant material types shown on the log may contain different materials and the change from one predominant material type to another could be different than indicated Descriptions on this log apply only at the specific location at the time of drilling and may not be representative of subsurface conditions at other locations or times Project No 77BP 54932 03 Date 9115103 DWR Log of Well 4932EW 3 GPJ Approved by LOG OF BOREHOLE Figure (sheet 2 of 2)