USDA/NRCS - National Cartography and Geospatial Center 20050505 vector digital data USDA/NRCS - National Cartography & Geospatial Center New York, NY https://edg.epa.gov/data/public/OLEM/6kquads_epa.zip http://geodata.epa.gov/arcgis/rest/services/OSWER/EPA6kQuads/MapServer Index grid of USGS 3.75x3.75 1:12,000 quadrangles for the United States including the lower 48, Alaska, Hawaii and Puerto Rico Vector dataset provides quarter quad boundaries with attributes describing the quads. Publication date 20020606 Complete unknown -177.249999 -65.187499 71.374999 17.875000 ESRI Geography Network Thesaurus USGS Quadrangle None United States ISO 19115 Topic Category USGS Quadrangle No Access Constraints, can be distributed to the public and all external partners. The U.S. Department of Agriculture, Service Center Agencies should be acknowledged as the data source in products derived from these data. This data set is not designed for use as a primary regulatory tool in permitting or citing decisions, but may be used as a reference source. This is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application. Federal, State, or local regulatory bodies are not to reassign to the Service Center Agencies any authority for the decisions that they make. The Service Center Agencies will not perform any evaluations of these data for purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these data to scales greater than at which they were originally mapped can cause misinterpretation of the data. Digital data files are periodically updated, and users are responsible for obtaining the latest version of the data. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 FIPS Pub 199 No Confidentiality Data with no confidentiality are accessible to all requester categories, including the General Public, with limited to no restrictions. National Cartography and Geospatial Center mailing

501 W. Felix St, Bldg 23

Fort Worth Texas 76115 None Available Quad names were spot checked against DRGs and appeared to be correct. ESRI feature type: , Geometry: , Topology: Data are complete for the United States Virgin Islands. Undocumented in original metadata, but accuracy should be near perfect, since the vertices of the grid are for predetermined lat/longs. 200206 USGS GNIS Cells database. http://geonames.usgs.gov/apex/f?p=136:1:3109801262764. Theoretical Grid Extract 3.75 quads, add FIPS code, add North South East West fields National Cartography and Geospatial Center mailing address

501 W. Felix St, Bldg 23

Fort Worth TX 76115 Not Available 20060321 Data were processed in the following steps by Harvey Simon of EPA Region 2 GIS on 03/14/06: 1) Downloaded individual merged grid shapefile for the lower 48 and separate files for Alaska,, Hawaii and Puerto Rico from USDA/NRCS Gateway (https://gdg.sc.egov.usda.gov/ 2) Ran summary statistics and visually inspected the output shapefile to check for duplicate polygons, none were found. 3) Imported text metadata record from gateway, and edited then ran through USGS metadata parser. 5) Imported data into Oracle Spatial using R2 data conversion procedures EPA/Region2/GIS Team Harvey Simon GIS Coordinator mailing and physical address

290 Broadway

New York NY 10007 202-566-0719 12000 online NRCS Gateway Geographic Features Came from source publication date 20020606 USGS and NRCS 20020619 vector digital data http://datagateway.nrcs.usda.gov/GatewayHome.html Vector G-polygon 263024 undefined 1.000000 undefined Explicit elevation coordinate included with horizontal coordinates 0.000001 0.000001 Decimal degrees North American Datum of 1983 Geodetic Reference System 1980 6378137.000000 298.257222 Attributes in the index maps identify the file and quad names, quad scales, quad dates and locational FIPS code. Geographic coordinates for the bottom, top, left and right sides of each quad are provided as well. Relevant attributes are: Cell_id - Unique ID from the GNIS GCNDB Quadname - Quadrangle Name from GNIS State_Code - Two character primary state abbreviation on which the quad is located MRC_Code - USGS Map Reference Code http://www.rootsweb.com/~mnbecker/usgsmaps.htm QuadID - DEM/DOQ style (1-64) quadid for DOQ with nw,ne,sw,se attached S_LAT - Latitude (in Decimal Degrees) of the south edge of the cell E_LONG - Longitude (in Decimal Degrees) of the east edge of the cell N_LAT - Latitude (in Decimal Degrees) of the north edge of the cell W_LONG - Longitude (in Decimal Degrees) of the west edge of the cell extent_typ - U=Undersized O=Oversized I=Irregular S=Standard On Grid F=Standard Off Grid Bottom - South bound Top - North Bound Left - West Bound Right - East Bound FIPS_C - Space separated list of State/County FIPS code of county within one mile of quarter quad Server=r2orasrv2.r02.epa.gov; Service=5252; User=staging; Version=SDE.DEFAULT The information depicted in this GIS layer is the result of digital analyses performed on a database consisting of information from a variety of governmental and other credible sources. The accuracy of the information presented is limited to the collective accuracy of the database on the date of the analysis. The information is believed accurate and reasonable efforts have been made to ensure the accuracy of the data. However, the National Cartography and Geospatial Center expressly disclaims responsibility for damages or liability that may arise from use of this data. This product is the property of the National Cartography and Geospatial Center and its use is thereby restricted. ESRI data format, dependent upon request 0.009 Server=r2orasrv2.r02.epa.gov; Service=5252; User=staging; Version=SDE.DEFAULT To be determined at time of order unknown National Cartography and Geospatial Center mailing

501 W. Felix St, Bldg 23

Fort Worth Texas 76115 None Available 20060509 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time National Cartography and Geospatial Center mailing

501 W. Felix St, Bldg 23

Fort Worth Texas 76115 None Available 20060509 17525000 20060509 Index grid of USGS 3.75x3.75 1:12,000 quadrangles for the United States including the lower 48, Alaska, Hawaii and Puerto Rico 20020606 Index grid of USGS 3.75x3.75 1:12,000 quadrangles for the United States including the lower 48, Alaska, Hawaii and Puerto Rico National Cartography and Geospatial Center 501 W. Felix St, Bldg 23 Texas 76115 None Available ESRI data format, dependent upon request ArcGIS Desktop 9.1 Service Pack 1 National Cartography and Geospatial Center 501 W. Felix St, Bldg 23 Texas 76115 None Available