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SECOR Logged By Date Dnlled Drilling Contractor Project Name MethodtEguipment Well Number ARCO#595 HOLLOW STEM AUGER CM 6/24102 CASCADE STOCKTON,CA SPLIT SPOON DMW-1 See`Legend to Logs"for Boring Surface Groundwater Depth(ft) Total Drive Trop sunphng method, Dram(in) Elev(ft) 67 FIRST WATER Depth(ft) wt(lbs) Dist(in) classifications and laboratory tesnn method 8 34.30 TOC 63 STABILIZED 101.5 Well Description Construction 4 � � fM 50 1 dense,moist(0,90,10,0) C549' 5 4 4 Same as above with Increased grain size to medium-grained sand 4 31 0 DMWI a + 55 36 SANDY SILT(NIL) dark grayish brown(10YR4/2),sand is @54' 40 fine-grained,hard,moist,low plasticity,cemented,subangular blocky soil structure(0,35,65,0) .• P r a` s i 31 SAND(SP) Iight olive brown(2 5Y5/3),sand is fine-grained,very 2 DMWI 60 35 dense,moist(0,100,0,0) @59' 35 SANDY SILT GYM)-with trace clay,olive brown(2 5Y4/3),sand is e • fine-grained,hard,moist,low plasticity(0,35,65,0) r 29 0 DhMJ v 65 32 Same as above,moist @64' 37 Wet at 67 feet A. P 30 SILTY SAND(SM):yellowish brown(10YR5/4),sand is 0 MW 70 33 fine-grained,dense,wet(0,80,20,0) @69' ro r t • s f 39 0 �MWJ The substrata descriptions above are generalized repremtations and based upon visual/manual classification of cuttings and/or samples obtained during dnllrng Predominant maternal 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.50595 00 0330 Date 8/6/02 GMM Log of Well 595DMW-t GPJ Approved by LAC OF BOREHOLE Figure (sheet 3 of 5)