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Phase I Environmental Site Assessment <br />Riverside Conoco <br />1350 Myers Avenue <br />Batesville, Arkansas <br />Soil Characteristics <br />Category Information Source <br />Soil Type Egam EDR Radius Map Report and <br />USDA-NRCS Web Soil Survey <br />(http://websoilsurvey.nrcs.usda.gov) <br />Description Soil is moderately well drained silt loam <br />with slow infiltration rates and a high <br />corrosion potential. Depth to water table is <br />listed as >107 inches. <br />Geology <br />Category Information Source <br />Province Arkansas Valley Geologic Map of Arkansas (Haley, <br />et al., 1993) <br />Formation Alluvium and terrace deposits <br />Description Alluvium deposits are found on the flood <br />plains of the Arkansas River and significant <br />tributaries. The deposits indicated by this <br />notation are alluvial deposits of present <br />streams. Sediments will include gravels, <br />sands, silts, clays, and mixtures of any and <br />all of these clastic materials. The partition <br />of this unit from other Holocene alluvial <br />deposits was on the basis of geomorphic <br />considerations rather than age or lithology. <br />Fossils are rare and modern. The lower <br />contact is unconformable and the thickness <br />is variable. <br />The terrace deposits include a complex <br />sequence of unconsolidated gravels, sandy <br />gravels, sands, silty sands, silts, clayey silts, <br />and clays. The individual deposits are often <br />lenticular and discontinuous. At least three <br />terrace levels are recognized with the lowest <br />being the youngest. Fossils are rare. The <br />lower contact is unconformable and the <br />thickness is variable. <br />Hydrogeology <br />Category Information Source <br />Hydrogeologic <br />Gradient <br />Estimated to be to the south-southwest <br />based on the topography in the area. <br />USGS Topographic Map Batesville, <br />Arkansas Quadrangle, 2020 <br />USGS Water Well Data <br />Category Information Source <br />Closest Water <br />Wells <br />The closest well is located approximately <br />1,500 feet south-southeast of the property. <br />The well is approximately 50 feet bgs. <br />EDR Radius Map Report <br />Flood Plain Data <br />Category Information Source <br />Flood Zones Zone AE: the subject property is located in <br />an area of increased flood risk with a <br />defined base flood elevation (BFE) of <br />approximately 265 feet. <br />EDR Radius Map Report and <br />FEMA Flood Map # 05063C0195E <br />8 <br />