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f <br /> _ � GEOCHECK°, PHYSICAL SETTING,S�OURCE SUMMARY £ror�" <br /> 2 <br /> GROUNDWATER FLOW VELOCITY INFORMATION <br /> Groundwater flow velocity information for a particular site is best determined by a qualified environmental professional <br /> using site specific geologic and soil strata data. If such data are not reasonably ascertainable,it may be necessary <br /> to rely on other sources of information,including geologic age identification, rock stratigraphic unit and soil <br /> characteristics data collected on nearby properties and regional soil information. In general,contaminant plumes <br /> move more quickly through sandy-gravelly types of soils than silty-clayey types of soils. <br /> GEOLOGIC INFORMATION IN GENERAL AREA OF TARGET PROPERTY FI <br /> Geologic information can be used by the environmental professional in forming an opinion about the relative speed <br /> 1 at which contaminant migration may be occurring. <br /> ROCK STRATIGRAPHIC UNIT GEOLOGIC AGE IDENTIFICATION <br /> Era: Cenozoic <br /> Category: Stratifed Sequence <br /> System: Quaternary <br /> Series: Quaternary <br /> F; Code: Q (decoded above as Era,System&Series) <br /> Geologic Age and Rock Stratigraphic Unit Source: P.G.Schruben, R.E.Arndt and W.J. Bawiec,Geology <br /> of the Conterminous U.S.at 1:2,500,000 Scale-a digital representation of the 1974 P.B.King and H.M.Beikman <br /> F1Map, USGS Digital Data Series DDS-11 (1994). <br /> DOMINANT SOIL COMPOSITION IN GENERAL AREA OF TARGET PROPERTY <br /> -rhe U.S. Department of Agriculture's(USDA)Soil Conservation Service(SCS)leads the National Cooperative Soil <br /> Survey(NCSS)and is responsible for collecting,storing, maintaining and distributing soil survey information <br /> for privately owned lands in the United States.A soil map in a sail survey is a representation of soil patterns <br /> in a landscape.Soil maps for STATSGO are compiled by generalizing more detailed (SSURGO)soil survey maps. <br /> FiThe following information is based on Soil Conservation Service STATSGO data. <br /> Soil Component Name: TOKAY <br /> r Soil Surface Texture: fine sandy loam <br /> Hydrologic Group: Class B-Moderate infiltration rates.Deep and moderately deep, <br /> moderately well and well drained soils with moderately coarse <br /> textures. <br /> Soil Drainage Class: Well drained. Soils have intermediate water holding capacity.Depth to <br /> water table is more than 6 feet. <br /> Hydric Status:Soil does not meet the requirements for a hydric soil. <br /> Corrosion Potential-Uncoated Steel: HIGH <br /> PDepth to Bedrock Min: 7 60 inches <br /> Depth to Bedrock Max: >60 inches <br /> F1 <br /> F1 <br /> Fi, <br /> FiTC1516260.2s Page A-4 <br /> v <br />