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0 CH2MHILL <br />r <br />Pro'. No.: 143626.B1.FW <br />SOIL BORING LOG <br />Project: PG&E Gas Gathering Drilling Contractor. Gregg Drilling <br />Drillina Method & Equipment: Hand Auqer and Marl MST "Rhino" Rig, Geoprobe Logger. D. Kinney <br />Sample <br />Soil Description <br />Comments <br />PID <br />;Soil name, uscs group symbol, color, <br />Depth of casing, drilling rate, <br />o <br />m m <br />a <br />i- <br />Reading <br />;moisture content, relative density or <br />drilling fluid loss, tests and <br />rg <br />o <br />(ppm) <br />iconsistency, soil structure, mineralogy <br />instrumentation <br />a C <br />E m <br />O N <br />Z m <br />cc <br />Elevation: <br />1 Location: McMullin <br />Boring No. 19 MW -4 <br />Start: <br />12/12/97 <br />Finish: 12/15/97 <br />(Former B-14) <br />Sheet 1 of 1 <br />J <br />I FILL: SANDY GRAVEL, brown (1 OYR, 413), dry, no <br />Hand augered to 12 feet <br />>< <br />0- <br />__x <br />'POORLY GRADED SAND (SP), dark yellowish brown <br />X X <br />0 <br />(1 OYR, 4/4), 5-15% fines, 80-90% medium sand, 5% <br />` <br />'X <br />fine gravel, moist, no odor <br />5.0 _yam/\/ <br />c <br />— — <br />o <br />SILTY SAND (SM), light oliva brown (2.5Y, 5/4), 20 <br />-/� <br />_X <br />` / <br />0 <br />low- to non -plastic fines, medium sand, moist <br />,_ <br />0 <br />08': iron -oxide staining common <br />`n� <br />X(// <br />X <br />0 <br />10.0 <br />/ ` <br />0 <br />®10': first groundwater encountered <br />X0 <br />X <br />SILT (ML), light olive brown (2.5Y, 5/4), 90% low- to <br />0 <br />non -plastic fines, 10% fine to medium sand, wet <br />@ 12': flowing sands encountered <br />POORLY GRADED SAND (SP), yellowish brown <br />_ <br />(1 OYR, 5/4), trace fines, predominately medium -grained <br />sand, wet <br />3.0/4.0 <br />0 <br />15.0 <br />_ <br />0 <br />3.0/4.0 <br />0 <br />BORING TERMINATED AT 20 FEET <br />_ <br />20.0 <br />0 <br />BORING CONVERTED INTO MONITORING WELL <br />