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IN <br />IN <br />L <br />IM <br />11 <br />I4 <br />CH2MHILL • <br />.IIs <br />SOIL BORING LOG <br />Project: PG&E Gas Gathering Drilling Contractor. Gregg Drilling <br />Drilling Method & Equipment: Hand Auger and Mad M5T'Rhino' Rig, Geoprobe Logger: D. Kinney <br />I <br />143626kemmsUWsb cmulen ns h9 MW 31 <br />PnnlW )/23/96 <br />Sam <br />le <br />Soil Description <br />Comments <br />(Soil name, uscs group symbol, color, <br />;Depth of casing, drilling rate, <br />oPID <br />m m <br />a <br />z <br />Reading <br />imoisture content, relative density or <br />:drilling fluid loss, tests and <br />W <br />o F <br />o <br />(ppm) <br />(consistency, soil structure, mineralogy <br />;instrumentation <br />at <br />y <br />E� <br />os <br />N <br />Z m <br />¢ <br />Elevation: <br />ILocation: McMullin <br />'[Boring No. 19 MW -3 <br />Start: <br />12/16/97 <br />Finish: 12/16/97 <br />Water Level: <br />Sheet 1 of 1 <br />ICLAYEY SAND (SC), brown (10YR, 4/3), 400/. fines, <br />Hand eugered to 6 feet <br />_JX, <br />0 <br />60% fine sand, some roots <br />— <br />X0 <br />Jx <br />o <br />—X <br />`X ' <br />SANDY SILT (ML), light yellowish brown (2.5Y, 6/3), <br />5.0 <br />0 <br />'.70-80% low -plasticity fines, 20-30% fine to medium <br />'\/ <br />sand, some caliche, moist <br />/\ <br />0 <br />2.0/2.0 <br />®7': some iron -oxide staining <br />0 <br />SILTY SAND (SM), light olive brown (2.5Y, 5/4), 10% <br />®9': first groundwater encountered <br />10.0 <br />4.0/4.0 <br />0 <br />non -plasticity fines, 90% fine sand, some iron -oxide <br />staining <br />0 <br />3.0/4.0 <br />0 <br />15.0 <br />0 <br />2.5/4.0 <br />0 <br />_ <br />WELL GRADED SAND (SW), gray (2.5,6/1), trace to 5% <br />_ <br />fines, 95-100% fine to coarse sand, trace iron -oxide staining <br />BORING TERMINATED AT 20 FEET <br />20.0 <br />0 <br />BORING CONVERTED TO MONITORING WELL <br />I <br />143626kemmsUWsb cmulen ns h9 MW 31 <br />PnnlW )/23/96 <br />