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03-A rl-07 <br /> Boring/Well Log Legend <br /> KEY TO SYMBOLS/ABBREVIATIONS <br /> Y First encountered groundwater PID= Photo-ionization detector or organic vapor meter <br /> = Static groundwater - reading in parts per million(ppm) <br /> Soils logged by hand-auger or air-knife cuttings fbg= Feet below grade <br /> Blow Counts= Number of blows required to drive a <br /> Soils logged by drill cuttings or disturbed sample Califomia-modified split-spoon sampler using <br /> a 140-pound hammer falling freely 30 inches, <br /> recorded per 6-inch interval of a total 1S-inch <br /> Q Undisturbed soil sample interval sample interval <br /> 0 Soil sample retained for submittal to analytical (IOYR 4/4)= Soil color according to Munsell Soil <br /> laboratory Color Charts <br /> O No recovery within interval ms]= Mean sea level <br /> Soils logged according to the USCS. <br /> Hydropunch or vapor sample screen interval <br /> UNIFIED SOILS CLASSIFICATION SYSTEM SCS) SUMMARY <br /> Major Divisions 3,alphic Group <br /> Symbol Typical Description <br /> Clean Gravels GW Well-gmded gravels,gravel-sand mixtures,little or no fines <br /> Gravel and <br /> (:55%fines) o C�' GP Poorly-gradedgm vets, <br /> gravel-sand mixtures,little or no Imes <br /> Gravelly Soils o 0 <br /> Gravels with Fines GM Silty grovels,gravel-sand-silt mixtures <br /> Coarse-Grained (>_IS%fines) GC Clayey Soils Y y gravels,gavel-sand-clay mixtures <br /> (>50%Sands <br /> and/or Gravels) Clean Sands SW Well-graded sands,gravelly sands,little or no fines <br /> (55%fines) <br /> Sand and SandySP Poorly-graded sands,gravelly sand,little or no fines <br /> Soils <br /> Sands with Fines SM Silty sands,sand-silt mixtures <br /> c (>_IS%fines) SC Clayey sands,sand-clay mixtures <br /> .5 ML Inorganic sil s,very fine sands,silly or clayey fine sands, <br /> 5 clayey silts with slight plasticity <br /> Silts and Clays CL Inorganic clays of low to medium plasticity,gravelly clays, <br /> Fine-Grained sandy clays,silty clays,lean clays <br /> Soils — <br /> o <br /> OL Organic silts and organic silty clays of low plasticity(>50%silts <br /> — <br /> o and/or Clays) MH Inorganic silts,micaceous or diatomaceous fire sand or silty <br /> soils <br /> LLSilts and Clays CH Inorganic clays of high plasticity <br /> m <br /> OH Organic clays ofinedium to high plasticity,organic silts <br /> K <br /> E t Highly Organic Soils — — _ PT Peat,humus,swamp soils with high organic contents <br /> S- <br /> CONESTOGA-ROVERS <br /> &ASSOCIATES <br />