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STRATIGRAPHIC AND INSTRUMENTATION LOG <br /> i� (OVERBURDEN) Page 2 of 2 <br /> PROJEI:T NAME: SHELL OIL PRODUCTS HOLE DESIGNATION: MW-16-90 <br /> PROJE,'T NUMBER: 240778 DATE COMPLETED: July 6,2007 <br /> CLIENT: DENIS BROWN DRILLING METHOD: ROTOSONIC <br /> LOCAT ON: STOCKTON,CALIFORNIA FIELD PERSONNEL: K MATTHIAS <br /> DEPTH SAMPLE <br /> DEPTH STRATIGRAPHIC DESCRIPTION&REMARKS ft BGS MONITORING WELL <br /> ft BGS w j o o. <br /> W w > o <br /> Z Z z a <br /> SM-SILTY SANDS,gleyl 5g 4/1,wet,5% <br /> clay,15%silt,80%fine sand,low plasticity <br /> CL-CLAY,gleyl 10y 4/1, moist,20%clay, 58.00 <br /> 70%silt,10%fine sand,medium plasticity 50 <br /> 60 <br /> 107 <br /> 65 <br /> ML-SILT,gleyl 5gy 4/1, moist,5%clay,55% 69.00 2"PVC WELL 0 <br /> 70 silt,40%fine sand,low plasticity CASING <br /> 75 BENTONITE 0 <br /> GROUT <br /> 80 8" 0 <br /> 81.00 BOREHOLE <br /> SM-SILTY SANDS,gleyl 3/n, wet,10%silt, <br /> 80%coarse sand,10%coarse gravel,low to <br /> high plasticity <br /> 85 <br /> 17 <br /> 90 CL-CLAY,dry,20%clay,70%silt,10%fine 89.50 BENTONITE <br /> sand,medium plasticity CHIPS <br /> = SAND PACK <br /> 95 = 2"PVC WELL 0 <br /> r = SCREEN <br /> 97.00 <br /> o END OF BOREHOLE @ 97.0ft BGS WELL DETAILS <br /> o Screened interval: <br /> a 100 92.00 to 97.00ft BGS <br /> W Length: 5ft <br /> Diameter: 2in <br /> Slot Size: 0.020 <br /> Q Material: PVC <br /> a Sand Pack: <br /> �? 105 91.00 to 97.00ft BGS <br /> Material: #2/12 SAND PACK <br /> 0 <br /> v <br /> N <br /> 0 <br /> J <br /> Z <br /> W <br /> NOTES: MEASURING POINT ELEVATIONS MAY CHANGE;REFER TO CURRENT ELEVATION TABLE <br /> 03 WATER FOUND Q <br /> w <br /> 0 <br />