U.S. Department of Agriculture, Natural Resources Conservation Service 19990210 vector digital data Fort Worth, Texas U.S. Department of Agriculture, Natural Resources Conservation Service va800 withheld USDA_Soil_Survey This data set is a digital soil survey and generally is the most detailed level of soil geographic data developed by the National Cooperative Soil Survey. The information was prepared by digitizing maps, by compiling information onto a planimetric correct base and digitizing, or by revising digitized maps using remotely sensed and other information. This data set consists of georeferenced digital map data and computerized attribute data. The map data are in a 7.5 minute quadrangle format and include a detailed, field verified inventory of soils and nonsoil areas that normally occur in a repeatable pattern on the landscape and that can be cartographically shown at the scale mapped. A special soil features layer (point and line features) is optional. This layer displays the location of features too small to delineate at the mapping scale, but they are large enough and contrasting enough to significantly influence use and management. The soil map units are linked to attributes in the Map Unit Interpretations Record relational database, which gives the proportionate extent of the component soils and their properties. SSURGO depicts information about the kinds and distribution of soils on the landscape. The soil map and data used in the SSURGO product were prepared by soil scientists as part of the National Cooperative Soil Survey. Digital versions of hydrography, cultural features, and other associated layers that are not part of the SSURGO data set may be available from the primary organization listed in the Point of Contact. en REQUIRED: The year (and optionally month, or month and day) for which the data set corresponds to the ground. 19990210 19990210 publication date Complete As needed -76.930706 -76.396863 36.949069 36.544325 11943872.999934 12097509.000078 3364464.499940 3508866.750059 None soil survey soils Soil Survey Geographic SSURGO Counties and County Equivalents of the States of the United States and the District of Columbia (FIPS Pub 6-3) Virginia Counties and County Equivalents of the States of the United States and the District of Columbia (FIPS Pub 6-3) City of Suffolk USGS Topographic Map Names Data Base Benns Church Quadrangle (s3607604) Newport News South Quadrangle (s3607605) Zuni Quadrangle (s3607610) Windsor Quadrangle (s3607611) Chuckatuck Quadrangle (s3607612) Bowers Hill Quadrangle (s3607613) Franklin Quadrangle (s3607617) Holland Quadrangle (s3607618) Buckhorn Quadrangle (s3607619) Suffolk Quadrangle (s3607620) Lake Drummond NW Quadrangle (s3607621) Riverdale Quadrangle (s3607625) Gates Quadrangle (s3607626) Whaleyville Quadrangle (s3607627) Corapeake Quadrangle (s3607628) Lake Drummond Quadrangle (s3607629) None The U.S. Department of Agriculture, Natural Resources Conservation Service, 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 Natural Resources Conservation Service any authority for the decisions that they make. The Natural Resources Conservation Service will not perform any evaluations of these maps for purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than at which they were originally mapped can cause misinterpretation of the data. If enlarged, maps do not show the small areas of contrasting soils that could have been shown at a larger scale. The depicted soil boundaries, interpretations, and analysis derived from them do not eliminate the need for onsite sampling, testing, and detailed study of specific sites for intensive uses. Thus, these data and their interpretations are intended for planning purposes only. Digital data files are periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data. U.S. Department of Agriculture, Natural Resources Conservation Service State Soil Scientist mailing address

1606 Santa Rosa Road, Suite 209

Richmond Virginia 23229-5014 804 287 1646 202 720 7808 804 287 1736 ESRI ArcCatalog 9.1.0.780 U.S. Department of Agriculture, Soil Conservation Service 1981 text, table, map This soil survey contains information that can be applied in managing farms and wetlands; in selecting sites for roads, ponds, buildings, and other structures; and in judging the suitability of tracts of land for farming, industry, and recreation. This soil survey depicts information about the kinds and distribution of soils on the landscape. The soil map and data used in the SSURGO product were prepared by soil scientists as part of the National Cooperative Soil Survey. Feature Class Attribute accuracy is tested by manual comparison of the source with hard copy plots and/or symbolized display of the map data on an interactive computer graphic system. Selected attributes that cannot be visually verified on plots or on screen are interactively queried and verified on screen. In addition, the attributes are tested against a master set of valid attributes. All attribute data conform to the attribute codes in the signed classification and correlation document and amendment(s). Certain node/geometry and topology GT- polygon/chain relationships are collected or generated to satisfy topological requirements (the GT-polygon corresponds to the soil delineation). Some of these requirements include: chains must begin and end at nodes, chains must connect to each other at nodes, chains do not extend through nodes, left and right GT-polygons are defined for each chain element and are consistent throughout, and the chains representing the limits of the file (neatline) are free of gaps. The tests of logical consistency are performed using vendor software. The neatline is generated by connecting the explicitly entered four corners of the digital file. All data outside the enclosed region are ignored and all data crossing these geographically straight lines are clipped at the neatline. Data within a specified tolerance of the neatline are snapped to the neatline. Neatline straightening aligns the digitized edges of the digital data with the generated neatline (i.e., with the longitude/latitude lines in geographic coordinates). All internal polygons are tested for closure with vendor software and are checked on hard copy plots. All data are checked for common soil lines (i.e., adjacent polygons with the same label). Quadrangles are edge matched within the soil survey area and edge locations generally do not deviate from centerline to centerline by more than 0.01 inch. The quadrangles in this survey are not edge matched to quadrangles in adjacent counties. A map unit is a collection of areas defined and named the same in terms of their soil and/or nonsoil areas. Each map unit differs in some respect from all others in a survey area and is uniquely identified. Each individual area is a delineation. Each map unit consists of one or more components. Soil scientists identify small areas of soils or miscellaneous (nonsoil) areas that have properties and behavior significantly different than the named soils in the surrounding map unit. These minor components may be indicated as special features. If they have a minimal effect on use and management, or could not be precisely located, they may not be indicated on the map. Specific National Cooperative Soil Survey standards and procedures were used in the classification of soils, design and name of map units, and location of special soil features. These standards are outlined in Agricultural Handbook 18, Soil Survey Manual, 1993, USDA, SCS; Agricultural Handbook 436, Soil Taxonomy, Soil Survey Staff, 1975, USDA, SCS; and all Amendments; Keys to Soil Taxonomy, Soil Survey Staff, (current issue); National Soil Survey Handbook, title 430-VI, (current issue). The actual composition and interpretive purity of the map unit delineations were based on data collected by scientists during the course of preparing the soil maps. Adherence to National Cooperative Soil Survey standards and procedures is based on peer review, quality control, and quality assurance. Quality control is outlined in the memorandum of understanding for the soil survey area and in documents that reside with the Natural Resources Conservation Service state soil scientist. Four kinds of map units are used in soil surveys: consociations, complexes, associations, and undifferentiated groups. Consociations - Consociations are named for the dominant soil. In a consociation, delineated areas are dominated by a single soil taxon and similar soils. At least one half of the pedons in each delineation are of the same soil component so similar to the named soil that major interpretations are not affected significantly. The total amount of dissimilar inclusions of other components in a map unit generally does not exceed about 15 percent if limiting and 25 percent if nonlimiting. A single component of a dissimilar limiting inclusion generally does not exceed 10 percent if very contrasting. Complexes and associations - Complexes and associations are named for two or more dissimilar components with the dominant component listed first. They occur in a regularly repeating pattern. The major components of a complex cannot be mapped separately at a scale of about 1:24,000. The major components of an association can be separated at a scale of about 1:24,000. In each delineation of either a complex or an association, each major component is normally present, though their proportions may vary appreciably from one delineation to another. The total amount of inclusions in a map unit that are dissimilar to any of the major components does not exceed 15 percent if limiting and 25 percent if nonlimiting. A single kind of dissimilar limiting inclusion usually does not exceed 10 percent. Undifferentiated groups - Undifferentiated groups consist of two or more components that do not always occur together in the same delineation, but are included in the same named map unit because use and management are the same or similar for common uses. Every delineation has at least one of the major components and some may have all of them. The same principles regarding proportion of inclusions apply to undifferentiated groups as to consociations. Minimum documentation consists of three complete soil profile descriptions that are collected for each soil added to the legend, one additional per 3,000 acres mapped; three 10 observation transects for each map unit, one additional 10 point transect per 3,000 acres. A defined standard or level of confidence in the interpretive purity of the map unit delineations is attained by adjusting the kind and intensity of field investigations. Field investigations and data collection are carried out in sufficient detail to name map units and to identify accurately and consistently areas of about 6 acres. The accuracy of these digital data is based upon their compilation to base maps that meet National Map Accuracy Standards. The difference in positional accuracy between the soil boundaries and special soil features locations in the field and their digitized map locations is unknown. The locational accuracy of soil delineations on the ground varies with the transition between map units. For example, on long gently sloping landscapes the transition occurs gradually over many feet. Where landscapes change abruptly from steep to level, the transition will be very narrow. Soil delineation boundaries and special soil features generally were digitized within 0.01 inch of their locations on the digitizing source. The digital map elements are edge matched between data sets. The data along each quadrangle edge are matched against the data for the adjacent quadrangle. Edge locations generally do not deviate from centerline to centerline by more than 0.01 inch. U.S. Geological Survey 1979-1989 map Reston, Virginia U.S. Geologic Survey 24000 stable-base material 1997 1998 Publication date USGS1 base materials for compilation and as reference in compilation of cultural features U.S. Department of Agriculture, Soil Conservation Service 1981 map Washington, DC U.S. Government Printing Office 15840 paper 1997 1998 Publication date SCS1 information for soil mapunit delineations, soil symbols and special soil features Natural Resources Conservation Service unpublished material map 15840 stable-base material 1997 1998 1998 NRCS1 digitizing source Commonwealth of Virginia, Department of Conservation and Recreation unpublished material map 24000 cartridge tape 1997 1997 DCR1 source material for soil survey boundary The City of Suffolk, Virginia, had a previously published soil survey, 1981, at 1:15,840 scale. An evaluation was made of the soil survey in 1998. It was determined that the soil map unit delineations and map unit components were accurate. withheld 1998 The soil map unit delineations and special features were manually compiled to an overlay registered to USGS 7.5 minute topographic quadrangle film positives. Special features were manually digitized at a resolution of 0.01 inch in LT4X Version 4.10. The soil map unit delineations overlays were raster scanned at a resolution of 200 dpi. The processing, raster editing, map neatline development, labeling, edge matching and vector conversion and editing were done in LT4X Version 4.10. The data were created and maintained in North American Datum of 1927. The data were written to Digital Line Graph Optional format with the export command. The data were imported for verification in ARC/INFO 7.1.2. The digitized soil survey boundary was replaced with the statewide jurisdictional boundary from the Virginia Department of Conservation and Recreation using arctools. New DLG's reflecting these changes were written with ARC/INFO 7.1.2. Compilation, digitizing and quality control were done by Natural Resources Conservation Service staff in Virginia. withheld 1999 The Map Unit Interpretations Record data base was developed by Natural Resources Conservation Service soil scientists according to national standards. withheld 1999 Metadata imported. withheld 20020723 08353800 Dataset copied. withheld 20030311 15522200 Dataset copied. withheld 20090407 15142000 Dataset copied. withheld 20090407 19151300 Vector G-polygon 8756 Simple Polygon FALSE 8756 TRUE FALSE North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 NAD_1983_StatePlane_Virginia_South_FIPS_4502_Feet coordinate pair survey feet 0.000256 0.000256 Lambert Conformal Conic 36.766667 37.966667 -78.500000 36.333333 11482916.666667 3280833.333333 1.000000 Explicit elevation coordinate included with horizontal coordinates USDA_Soil_Survey Special Soil Features represent soil, nonsoil, or landform features that are too small to be digitized as soil delineations (area features). U.S. Department of Agriculture. 1993. Soil Survey Manual. Soil Surv. Staff, U.S. Dep. Agric. Handb. 18. Feature Class 8756 OBJECTID_1 Internal feature number. ESRI Classification and Correlation of the Soils of City of Suffolk, Virginia U.S. Department of Agriculture, Natural Resources Conservation Service Sequential unique whole numbers that are automatically generated. OBJECTID_1 OID 4 10 0 SOIL_COV2_ SOIL_COV2_ Integer 4 10 0 OBJECTID OBJECTID Integer 4 10 0 MUSYM MUSYM String 8 0 0 MU_DESC MU_DESC String 200 0 0 Shape.len SS_POTENT String 10 0 0 SHAPE Shape Geometry 4 0 0 Feature geometry. ESRI Coordinates defining the features. SHAPE.area SHAPE.area Double 0 0 0 SHAPE.len SHAPE.len Double 0 0 0 ss_potent ss_potent String 10 0 0 Shape Shape Geometry 4 0 0 Feature geometry. ESRI Coordinates defining the features. Shape.area Feature geometry. ESRI Coordinates defining the features. Shape.area Double 0 0 0 Shape.len Shape.len Double 0 0 0 Map Unit Delineations are closed polygons that may be dominated by a single soil or nonsoil component plus allowable similar or dissimilar soils, or they can be geographic mixtures of groups of soils or soils and nonsoil areas. The map unit symbol uniquely identifies each closed delineation map unit. Each symbol is linked to a map unit name. The map unit symbol is also the key for linking information in the Map Unit Interpretations Record tables. The map unit symbols are not carried within the modified Digital Line Graph file; however, they are made available in a companion attribute file. The attribute file links the minor codes in the Digital Line Graph files to the map unit symbols. Map Unit Delineations are described by the Map Unit Interpretations Record database. This attribute database gives the proportionate extent of the component soils and the properties for each soil. The database contains both estimated and measured data on the physical and chemical soil properties and soil interpretations for engineering, water management, recreation, agronomic, woodland, range, and wildlife uses of the soil. The soil Map Unit Interpretations Record database consists of the following relational tables: codes (database codes) - stores information on all codes used in the database comp (map unit component) - stores information for soil map unit components compyld (component crop yield) - stores crop yield information for soil map unit components forest (forest understory) - stores information for plant cover as forest understory for soil map unit components helclass (highly erodible lands class) - stores the highly erodible land classification for wind and water assigned to the soil map units hydcomp (hydric component information) - stores data related to the hydric classification, criteria, landform, etc. inclusn (map unit inclusion) - stores the names of soils included in the soil map units interp (interpretation) - stores soil interpretation ratings (both limitation ratings and suitability ratings) for soil map unit components layer (soil layer) - stores characteristics of soil layers for soil map unit components mapunit (map unit) - stores information that applies to all components of a soil map unit mucoacre (map unit county acres) - stores the number of acres for the map unit within a county muyld (map unit yield) - stores crop yield information for the soil map unit. Table not populated. plantcom (plant composition) - stores plant symbols and percent of plant composition associated with components of a soil map unit. Table not populated. plantnm (plant name) - stores the common and scientific names for plants used in the database rangenm (range name) - stores the range site names. Table not populated. rsprod (range site production) - stores range site production information for soil map unit components. Table not populated. ssacoac (soil survey area county acreage) - stores the acreage for the county within the boundary of the soil survey area ssarea (soil survey area) - stores information that will apply to an entire soil survey area taxclass (taxonomic classification) - stores the taxonomic classification for soils in the database windbrk (windbreak) - stores information on recommended. Table not populated. windbreak plants for soil map unit components wlhabit (wildlife habitat) - stores wildlife habitat information for soil map unit components woodland (woodland) - stores information on common indicator trees for soil map unit components woodmgt (woodland management) - stores woodland management information for soil map unit components yldunits (yield units) - stores crop names and the units used to measure yield Special features are described in the feature table. It includes a feature label, feature name, and feature definition for each special and ad hoc feature in the survey area. U.S. Department of Agriculture. 1975. Soil Taxonomy: A basic system of soil classification for making and interpreting soil surveys. Soil Conserv. Serv., U.S. Dep. Agric. Handb. 436. U.S. Department of Agriculture. (current issue). Keys to Soil Taxonomy. Soil Surv. Staff, Soil Conserv. Serv. U.S. Department of Agriculture. (current issue). National Soil Survey Handbook, title 430-VI. Soil Surv. Staff, Natural Resources Conservation Service. U.S. Department of Agriculture. 1993. Soil Survey Manual. Soil Surv. Staff, U.S. Dep. Agric. Handb. 18. U.S. Department of Agriculture. 1994. Soil Survey Geographic (SSURGO) Data Base: Data use information. Soil Conserv. Serv. U.S. Department of Agriculture. State Soil Survey Database Data Dictionary. Soil Conserv. Serv. U.S. Department of Agriculture, Natural Resources Conservation Service, National Cartography and Geospatial Center mailing address

P.O. Box 6567

Fort Worth Texas 76115 800 672 5559 817 509 3469 City of Suffolk, Virginia SSURGO Although these data have been processed successfully on a computer system at the U.S. Department of Agriculture, no warranty expressed or implied is made by the Agency regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. The U.S. Department of Agriculture will warrant the delivery of this product in computer readable format, and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer input peripherals, or when the physical medium is delivered in damaged condition. Request for adjustment of credit must be made within 90 days from the date of this shipment from the ordering site. The U.S. Department of Agriculture, nor any of its agencies are liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets. The U.S. Department of Agriculture prohibits discrimination in its programs on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, and marital or familial status. (Not all prohibited bases apply to all programs.) ARC/INFO coverage spatial 20.3 CD-ROM ISO 9660 Level 1 ARCE spatial 44.0 CD-ROM ISO 9660 Level 1 DLG 19920508 Optional spatial and keys 11.6 CD-ROM ISO 9660 Level 1 ASCII keys and attributes 0.3 CD-ROM ISO 9660 Level 1 The charge is $50 for a CD-ROM that contains one or more data sets. A data set is one soil survey area in 7.5 quadrangle format and includes both spatial and attribute data. Call or write to organizations listed under Distributor. Spatial line data and locations of special feature symbols are in DLG-3 optional format and ARC/INFO coverage and export formats. Digital line graph files contain major and minor code pairs in area and line records. A conversion legend is provided for each digital line graph file. Soil map symbols and special feature labels are available in a companion ASCII attribute file. The Map Unit Interpretations Record attribute soil data are available in variable length, tab delimited, ASCII file format. 10 working days 20070823 U.S. Department of Agriculture, Natural Resources Conservation Service REQUIRED: The person responsible for the metadata information. State Soil Scientist mailing address

1606 Santa Rosa Road, Suite 209

Richmond Virginia 23229-5014 804 287 1646 804 287 1736 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile en http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile 20140729 15304300 FALSE 20070823 13164100 20070823 13164100 1.0 ESRI ArcCatalog 9.1.0.780 USDA_Soil_Survey -76.930706 -76.396863 36.949069 36.544325 1 11943872.999934 12097509.000078 3508866.750059 3364464.49994 1 ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset 002 withheld Feature Class NAD_1983_StatePlane_Virginia_South_FIPS_4502_Feet 8756 20070823