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BOREHOLE LOG KEY <br />BOREHOLE LOCATION: DRILLER: <br />DRILL RIG: <br />SURFACE ELEVATION: DRILL STEM.• <br />NOTES.• SAMPLER: <br /> i <br /> ,,, ~ ~ j e <br />OIL DESCRIPTION f7EL0 & LABORATORY <br />-~ ~ ~ i 3 ~ ~ S TEST RESULTS <br /> <br />o g <br />~ <br />~ 4 <br />~ a <br />,~, m <br />,~ 2 , <br />~ S ~ <br />~ (strotigraphic transitions are approximate and <br />are in/erred from cuttings and drillers .comments) <br />0 <br /> indicates drive sample <br /> <br /> Notes in this column <br />5 indicates bulk sample indicate tests performed <br /> and test results <br /> indicates core sample OD: dry density in cubic <br /> pounds per foot (pct) <br />10 MC: % moisture content <br /> DSl Sample identifier. OS=Drive sample <br /> GS=Bulk sample from auger flights <br /> CS=Core sample LL: Liquid Limit <br />15 g <br />l~ Blows required to drive sampler 6 inches each. The <br />" <br />" PL• Plastic Limit <br /> drive. <br />seating <br />first six inches is considered to be the <br /> / t Pl.• Plasticity Index <br />20 12 indicates seven blows required to drive the -sampler <br />% <br />i <br /> X1 twelve inches with a 140-1b hammer falling .30 inches ) <br />on ( <br />GF Gravel fract <br /> SF.• Sand fraction (%) <br /> 12 length of intact soil plug recovered from the sampler <br />25 F200: Silt/Cloy (%) <br /> indicates free water surface of time of dritriig <br /> Sh: Shear resistance <br />30 <br /> P: Penetration resistance <br /> <br /> -clay CBR: California Bearing <br /> Ratio <br />35 <br /> SP: swelling pressure <br /> - silt <br /> ~~ total movement under <br /> Unified Classification S tern ASTM D 2487 <br />ys ( ) consolidation pressure <br />40 <br /> - sand CL =lean cloy to sandy/gravelly lean clay psf.• pounds per sq. ft. <br /> ravell <br />silt <br />a <br />d <br />/ <br />ilt t <br />ML = <br /> y <br />n <br />y <br />g <br />o s <br />s <br />pcf.• pounds per cu. ft. <br />45 -grovel CH =high plasticity clay to sandy/gravelly high plasticity clay <br /> MH =high elasticity silt to sandy/gravelly high elasticity silt <br /> SW = well-graded sand or well-graded sand with grovel <br /> - -shale <br />50 _ <br />- SP =poorly graded sand or poorly graded smnd with gravel <br /> SM =silty sand to silty sand with grovel <br /> -hard bedrock SC =clayey sand to clayey sand with gravel <br /> raded grovel or well-graded gravel with sand <br />GW =well- <br />55 g <br /> GP =poorly graded gravel or poorly graded grovel with sand <br /> GM =silty grovel or silty gravel with sand <br /> <br />60 GC =clayey gravel or clayey gravel with sand <br /> * SPT N-values not corrected for ener or de tr <br />BOREHOLE INVESTIGATION ~ • GEOTECH <br />LOG KEY <br />DRAFTING BOREHOLE LOG KEY civil, sWdursl, and Geotechnical Engineers, inc. <br />FIELD DATE 222 south Park Avenue <br />Montrose, Colorado 87401 <br />OF 1 /DB ND. Phone (970) 249-6828 Fax (970) 249-0945 <br />