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SECOR Dogged By Dates Drilled Dn11mg Contractor Project Name MethodSquipment Bonng Number 7117101 WEST ARCO#595 SPLIT SPOON { CM 7117101 IIAZMAT STOCKTON,CA HSA PSB-1 See"Legend to Logs"for Borriig Surface Groundwater Depth(ft) Total Dnve Drop sampling methad, Diam(rn.) Elev(ft) V 60.6 FIRST Depth(ft) wt(lbs) Dist(in) c sdtcauons and laboratory 8 X 62 5 STABILIZED 100.0 NA-teWPIZ methods NA Well Descnphon Construction a. � I SANDY SILT(ML):brown(10YR5/3),fine-grained sand,low plasticity,hard, moist to wet,subangular blocky soil structure,partially cemented(0,35,65,0) 0 86 Same as above SILTY SAND(SM) light olive brown(2 5Y5/3),fine-grained sand,very dense, moist(0,60,40,0) 0 SANDY SILT(ML).brown(10YR5/3),fine-grained sand,very stiff to hard,low 85 plasticity,partially cemented in zones,rootholes,wet along strucliiral fractures GROUT (0,40,60,0) 0 SAND(SP): dark yellowish brown(10YR3/6),fine-grained sand,dense,wet 9Q 090100 SANDY SILT(ML) brown(10YR4/3),with clay,fine-grained sand,low plasticity, very stiff to bard,moist,partially cemented,wet in zones,subangular blocky soil structure(0,30,60,10) 95 At 95 to 96 feet,zone of no clay,wet sandy silt 0 SILTY SAND(S1V)f) dark yellowish brown(10YR4/4),fine-grained sand,dense,wet The substrata descriptions above are generalized representations and based upon visuallmanual classification of cuttings and/or samples obtained dunng drilling Predominant mamnal 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 077 43029.330 Date 9/20/01 PR Log of Bonng 595MB 1 GPI Approved by LOG OF BOREHOLE Figure (sheet 4 of 5)