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PHY8ICAL`.SET3'IIVG SOURCE RECORDSS H SEARCH 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. HWI: National Wetlands Inventory. This data,available in select counties across the country,was obtained by EDR In March 1997 from the U.S.Fish and Wildlife Service. HYDROGEOLOGIC INFORMATION AQUIFLOWTM Information System Source: EDR proprietary database of groundwater flow information EDR has developed the AQUIFLOW Information System(AIS)to provide data on the general direction of groundwater now at specific points.EDR has reviewed reports submitted to regulatory authorities 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 Stratigraphic 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.Beikman Map,USGS Digital Data Series DDS-11 (1994). STATSGO: State Soil Geographic Database The U.S.Department of Agriculture's(USDA)Soil Conservation Service(SCS)leads the national Cooperative Soil Survey(NCSS)and is responsible for collecting,storing,maintaining and distributing sod survey information for privately owned lands in the United States.A soil map in a soil survey is a representation of soil pattens in a landscape.Soil maps for STATSGO are oompiled by generalizing more detailed(SSURGO)soil survey maps. ADDITIONAL ENVIRONMENTAL RECORD SOURCES FEDERAL WATER WELLS I i PWS: Public Water Systems Source: EPAIOffice of Drinking Water Telephone: 202-260-2805 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. PWS ENF: Public Water Systems Violation and Enforcement Data Source: EPA/Office of Drinking Water Telephone: 202-260-2805 Violation and Enforcement data for Public Water Systems from the Safe Drinking Water Information System(SDWIS)after August 1995. Prior to August 1995,the data came from the Federal Reporting Data System(FRDS). USGS Water Wells: In November 1971 the United States.Geological Survey(USGS)Implemented a national water resource information tracking system. This database contains descriptive information on sites where the USGS collects or has collected I data on surface water andlor groundwater. The groundwater data includes information on more than 900,000 wells,springs,and other sources of groundwater. ` TC0508210.ir Page A-9