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07-Mar-05 <br /> Boring/Well Log Legend <br /> KEY TO SYMBOLS/ABBREVIATIONS <br /> V First encountered groundwater PID Photo-ionization detector or organic vapor meter <br /> reading in parts per million(ppm) <br /> _T Static groundwater <br /> fbg= Feet below grade <br /> j Soils logged by hand-auger or air-knife cuttings <br /> Blow Counts= Number of blows required to drive a <br /> T California-modified split-spoon sampler using <br /> (( Soils logged by drill cuttings or disturbed sample a 140-pound hammer falling freely 30 inches, <br /> recorded per 6-inch interval of a total 18-inch <br /> ❑ Undisturbed soil sample interval sample interval <br /> Soil sample retained for submittal to analytical (IOYR 4/4)= Soil color according to Munsell Soil <br /> Color Charts <br /> laboratory <br /> — msl= Mean sea level <br /> O No recovery within interval <br /> —_ Soils logged according to the USCS. <br /> Hydropunch screen interval <br /> UNIFIED SOILS CLASSIFICATION SYSTEM(USCS) SUMMARY <br /> Major Divisions raphic Group Typical Description <br /> Symbol <br /> 4 GW Well-graded gravels,gravel-sand mixtures,little or no fines <br /> Clean Gravels <br /> (-55%fines) p GP Poorly-graded gravels,gravel-sand mixtures,little or no fines <br /> Gravel and o 0 <br /> Gravelly Soils o <br /> Gravels with Fines GM Silty gravels,gravel-sand-silt mixtures <br /> Coarse-Grained (-2:15%fines) GC Clayey gravels,gravel-sand-clay mixtures <br /> Soils <br /> (>50%Sands SW Well-graded sands,gravelly sands,little or no fines <br /> and/or Gravels) Clean Sands <br /> (:55%fines) 'SP Poorly-graded sands,gravelly sand,little or no fines <br /> Sand and Sandy <br /> Soils SM Silty sands,sand-silt mixtures <br /> Sands with Fines <br /> (>_15%fines) SC Clayey sands,sand-clay mixtures <br /> mInorganic silts,very fine sands,silty or clayey fine sands, <br /> ML clayey silts with slight plasticity <br /> o inorganic clays of low to medium plasticity,gravelly clays, <br /> Silts and Clays CL sandy clays,silty clays,lean clays <br /> o Fine-Grained =_ <br /> m Soils OL Organic silts and organic silty clays of low plasticity <br /> 3 (>50% Silts Inorganic silts,micaceous or diatomaceous fine sand or silty <br /> and/or Clays) MH soils <br /> 0 <br /> m <br /> E Silts and Clays CH Inorganic clays of high plasticity <br /> 0 <br /> "a OH Organic clays of medium to high plasticity,organic silts <br /> N <br /> m <br /> a <br /> d <br /> Highly Organic Soils "/ "/ PT Peat,humus,swamp soils with high organic contents <br />