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Proj. No.: 143626.B1.FW <br /> SOIL BORING LOG <br /> Project: PG&E Gas Gathering Drilling Contractor: Gregg Drilling <br /> DrillingMethod & Equipment: Hand Auger& Mark M5T Rhino, Geo robe Logger: T. Poe <br /> Sample I Soil Description Comments <br /> o PID iboil name, uscs group symbol,color, Depth of casing, drilling rate, <br /> ma Reading !moisture content, relative density or drilling fluid loss,tests and <br /> o ^ (ppm) Econsistency, soil structure, mineralogy instrumentation <br /> 1CL r- a) Z3 <br /> O fA Z Cz -- <br /> Elevation: _ ;Location: Thornton ;Boring No. 20 PZ-4 <br /> Start: 11/26/97 1Finish: 11/26/97 ;Water Level: <br /> _ Sheet 1 of 1 <br /> 0i;i 0 FILL:CLAYEY GRAVEL(GCS brown(10YR,3/2) j Hand augered to 5 feet <br /> I !FILL:SILTY SAND(SM),brown(10YR,3/2) <br /> (FILL:SANDY SILT(ML),brown(10YR,3/2) <br /> -><I I � 0 I ' <br /> Il I - <br /> i I i POORLY GRADED SAND(SP},brown <br /> (10YR,3/2), <br /> <5%fines,tine-grained,moist <br /> - <br /> I <br /> 0 <br /> 5.0 <br /> j 1 <br /> Began macro core <br /> 1.5/3.0 0 !LEAN CLAY(CLI very dark gray brown(10 YR 3/1), <br /> low plasticity,moist,firm <br /> I <br /> 1 <br /> @8':dark greenish gray(SGY,4/1) <br /> 1 4.0/4.0 0 � <br /> P I <br /> I <br /> s ' i <br /> 13.5/3.51 I 1 <br /> 15.0 I Collected grab groundwater sample <br /> j (Petrosense=3 ppm) <br /> i I I BORING TERMINATED AT 15.5 FEET <br /> BORING CONVERTED INTO PIEZOMETER <br /> - <br /> i i J , <br /> _ I <br /> i <br /> 20.0 <br /> 143626VeporlsVogsVhomton.x1s 120 PZ-41 Printed:7/24/98 <br />