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PHYSICAL SETTING SOURCE RECORDS SEARCHED ' TOPOGRAPHIC INFORMATION USGS 7 5'Digital Elevation Model(DEM) Source United States Geologic Survey ' EDR acquired the USGS 7 5 Digital Elevation Model in 2002 and updated it in 2008 The 7 5 minute DEM corresponds to the USGS 1 24,000-and 1 25,000-scale topographic quadrangle maps The DEM provides elevation data with consistent elevation units and projection HYDROLOGIC INFORMATION Flood Zone Data This data available in select counties across the country,was obtained by EDR in 1999 from the Federal Emergency Management Agency(FEMA) Data depicts 100-year and 500-year flood zones as defined by FEMA NWI National Wetlands-Inventory This data,available in select counties across the country was obtained by EDR = in 2002 from the U S Fish and Wildlife Service - HYDROGEOLOGIC INFORMATION AOUIFLOWR Information System Source EDR proprietary database of groundwater flow information EDR has developed the AOUIFLOW Information System(AIS)to provide data on the general direction of groundwater flow at specific points EDR has reviewed reports submitted to regulatory authonties at select sites and has extracted the date of the report hydrogeologically determined groundwater flow direction and depth to water table , information GEOLOGIC INFORMATION Geologic Age and Rock Stratigraphrc Unit Source P G Schruben, R E Arndt and W J Bawiec Geology of the Conterminous U S at 1 2,500 000 Scale-A digital _ representation of the 1974 P B King and H M Beckman Map,USGS Digital Data Series DDS- 11 (1994) STATSGO State Soil Geographic Database Source Department of Agriculture Natural Resources Conservation Services The U S Department of Agriculture s(USDA)Natural Resources Conservation Service(NRCS)leads the national Conservation Soil Survey(NCSS)and is responsible for collecting storing maintaining and distributing soil survey information for privately owned lands in the United States A sod map in a soil survey is a representation --of soil patterns in a landscape Soil maps for STATSGO are compiled by generalizing more detailed(SSURGO)��-_� soil survey maps SSURGO Soil Survey Geographic Database— Source Department of Agriculture Natural Resources Conservation Services(NRCS) -- - = Telephone -800672-5559- SSURGO is the most detailed level of mapping done by the Natural Resources Conservation Services mapping scales generally range from 1 12 000 to 1 63 360 Field mapping methods using national standards are used to construct the sod maps in the Sod Survey Geographic(SSURGO)database SSURGO digitizing duplicates the original sod survey maps This level of mapping is designed for use by landowners townships and county natural resource planning and management , LOCAL/REGIONAL WATER AGENCY RECORDS FEDERAL WATER WELLS PWS Public Water Systems Source EPA/Office of Drinking Water Telephone 202 564-3750 Public Water System data from the Federal Reporting Data System A PWS is any water system which provides water to at least 25 people for at least 60 days annually PWSs provide water from wells,rivers and other sources TCO 16408411r Page A 171 4