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F <br /> Name: Barclays Lathrop site Date: 8/2/93Borin Number: C1 <br /> : 14744 Borehole Depth: 140' Surface Completion: monument <br /> o: Exploration Drilling Well Dept : ' Surface Elevation: <br /> uip: Failing 1500 mud rotary Water Elev.: Logged By: JED <br /> Sampler Type: 94mm wireline Casing Elevation: Checked By: CAH <br /> o E <br /> i <br /> Description �'a A z U Q p Remarks <br /> Yellowish brown (lOYR 6/4)silty CLAY(CL) 5% bentonite grout <br /> ' (80,20,0,0) medium stiff, dry, low plasticity. B <br /> 1 <br /> ' a <br /> 9 <br /> Grades to Pale brown(5YR 5/2)(90,10,0,0) k <br /> ' very stiff,dry. <br /> Hydrated bentonite pellets <br /> ' Streaks with white. 1 <br /> 4"schedule 40 PVC blank <br /> ' well casing. <br /> 1" lens of Dark yellowish brown clayey SAND (SC) <br /> ' fine-medium rained,micaceous. <br /> Centralizer <br /> Grades to Pale yellowish brown (IOYR 6/2) 10 <br /> 4"schedule 40 PVC 0.020" <br /> ' (70,20,10,0) very stiff, dry,mottled with iron oxide. well screen. <br /> Grades to Dark yellowish brown(lOYR 5/2)with <br /> ' streaks of white and black(90,10,0,0). <br /> 11 .". , Lonestar#2/12 sand <br /> ' Dark yellowish brown(lOYR 4/2)clayey SAND(SC) <br /> (25,25,50,0)fine-medium grained,medium dense,moist '•. <br /> 11 3rd water <br /> Moderate yellowish brown(lOYR 5/4) silty SAND(SM) <br /> (30,30,40,0) medium dense, moist. <br /> Centralizer <br /> Pale yellowish brown (lOYR 6/2)CLAY (CL) (100,0,0,0) <br /> ' stiff,dry. 12 Silt trap <br /> TRC Environmental Corporation <br /> Figure No. A-4 <br />