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PHYSICAL SETTING SOURCE RECORDS SEARCHED PHYSICAL SETTING SOURCE RECORDS SEARCHED TOPOGRAPHIC INFORMATION PW8 ENF: Public Water Systems Violation and Enforcement Data USGS 7.5'Dlgltal Elevation Modal(DEM) Source: EPA/OfTce of Drinking Water Sours:United States Geologic Survey Telephone:202-584-3750 EDR acquired the USGS 7.5Digital Elevation Modal in 2002 and updated it In 2006.The 7.5 minute DEM corresponds Violation and Enforcement data for Public Water Systeme from the Safe Drinking Water Information System(SDWIS)after to the USGS 1:24,000-and 1.25.000-scale topographic quadrangle maps The DEM provides elevation data August 1995.Prior to August 1995,the data came from the Federal Reporting Data System(FRDS). with cooslslent elevation units and protection. USGS Water Wella: USGS National Water Inventory System(NWIS) This database contains descriptive information on sites where the USGS collects or has collected data on surface HYDROLOGIC INFORMATION water and/or groundwater.The groundwater data includes information on wells,springs,and other sources of groundwater. Flood Zone Data: This data,available in select counties across the country,was obtained by EDR in 1999 from the Federal STATE RECORDS Emergency Management Agency(FEMA). Data depicts 100-year and 500-year flood zones as defined by FEMA. Water Well Database NW: National Wetlands Inventory.This data,available in select counties across the country,was obtained by EDR Source:Department of Water Resources In 2002 and 2005 from the U.S.Fish and Wildlife Service. Telephone:916.651-9848 California Drinking Water Quality Database HYDROGEOLOGIC INFORMATION Source:Department of Health Services Telephone:916-324 2319 AOUIFLOWR Intormatlon System The database includes all drinking water compliance and special studies monlforing for the state of California Source: EDR proprietary database of groundwater Bow inf.mobon since 1984.It consists of over 3,200,000 individual analyses along with well and water system information EDR hes developed the AQUIFLOW Information System(AIS)to provide data on me general direction of groundwater flow at specific points.EDR has reviewed reports submitted to regulatory authorities at select sites and has erected the date of the report,hydrogeologicelly determined groundwater flow direction and depth to water table OTHER STATE DATABASE INFORMATION information. California Oil and One Wall Locations Source:Department of Conservatton GEOLOGIC INFORMATION Telephone:916-323.1779 Geologic Age and Rock Stratlgraphic Unit Source.P.G.Schruben,R.E.Arndt and W.J.Bavrec,Geology of the Conterminous U.S.at 1.2,500,000 Scale-A digital RADON representation of the 1974 P B.King and H.M.Belkman Map,USGS Digital Data Series DDS 11(1994). State Database:CA Radon STATSGO: State Sol Geographic Database Source:Department of Health Services Source. Department of Agriculture,Nature)Resources Conservation Services Telephone:918324-2208 The U.S.Department of Agriculture s(USDA)Natural Resources Conservation Service(MRCS)leads me national Radon Database fpr California Conservation Soil Survey(NCSS)and is responsible for collecting,storing,maintaining and dlstribuiing sail survey information for privately owned lands In the United States.A sol map in a soil survey Is a representation Area Radon information of soil patterns In a landscape.Soil maps for STATSGO are compiled by generalizing more detailed(SSURGO) Source:USGS soil survey maps. Telephone:703-356-4020 The National Radon Database has been developed by the U.S.Environmental Protection Agency SSURGO:Soil Survey Geographic Database (USEPA)and Is a completion of the EPAIState Residential Radon Survey and the National Residential Radon Survey. Source:Department of Agriculture.Natural Resources Conservation Services(NRCS) The study covers the years 1986-1992.Where necessary data has been supplemented by information collected at Telephone.800-672-5559 private sources such as universities and research institutions. SSURGO is the most detailed level of mapping done by the Natural Resources Conservation Services,mapping scales generally range from 1:12,0001.1:83,360.Field mapping methods using national standards are used to EPA Radon Zonas construct the sol map.In the Soil Survey Geographic(SSURGO)database.SSURGO digitizing duplicates the Source:EPA orlglnal soil survey maps.This level of mapping Is designed for use by landowners,townships and county Telephone:703-356-4020 natural resource planning and management. Sections 307 8 309 of IRAA directed EPA to list and Identify areas of U.S.with the potential for elevated indoor ,soon levels. LOCAL/REGIONAL WATER AGENCY RECORDS OTHER FEDERAL WATER WELLS Airport Landing Facilities: Private and public use landing facilities PWS:Public Water Systems Source' Federal Aviation Administration,800-457-8656 Source: EPA/Of l"of Drinking Water Telephone:202-564-3750 Epicenter: World earthquake epicenters,Richter 5 or greater Public Water System data from the Federal Reporting Data System.A PWS is any water system which provides water to at Source: Department of Commerce,National Oceanic and Atmospheric Administration least 25 people for at least 60 days annually.PWSs provide water from wells,rivers and other sources. California Earthquake Fault Linn: The fault lines displayed on EDR'a Topographic map are dlgihzed quaternary fault lines, prepared in 1975 by the United State Geological Survey.Additional information(also from 1975)regarding activity at specific fault lines comes from California's Preliminary Fault Activity Map prepared by the California Division of Mines and Geology. 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