Greene, D.C., and Wolfe, W.J. 1998 Series_Name N/A Issue_Identification N/A Nashville, Tenn. U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?statsoil This dataset was developed for use with the Tennessee STATSGO data base as an additional datafile. Each record in the datafile relates to a STATSGO MUID number which is assigned to a polygon(s) in the STATSGO geographic coverage. Four soil attributes were derived from the COMP and LAYER datafiles of STATSGO, all of which are represented as percentages of the particular map unit's area. By representing these properties as percentages, a four-color (CMYK) display can be utilized to represent the properties more effectively than a single-color or grayscale display. Any application which can utilize the STATSGO data base can utilize this dataset. The main goal was to combine different elements of the STATSGO data base to create an easily representable version of certain soil characteristics to aid in the interpretation of soil contaminant transport. Procedures_Used: The majority of the creation of this datafile was achieved through ESRI's ArcView 3.0 software. This product provided an easier alternative to ESRI's Arc/Info for manipulating the large data tables in the STATSGO data base. Copies of the COMP and LAYER datafiles were made. Fields not used in the calculations were deleted to speed processing. A new field named MUIDSEQ was added to both datafiles. This field was a concatenation of the MUID and the SEQNUM fields. The COMP datafile was then merged into the LAYER datafile using MUIDSEQ as the key. This first step enabled easier grouping and processing of the data. Soil thickness was calculated from the COMP datafile. Records were selected if ROCKDEPL was less than 60. The COMPPCT field was summed over all records for a given MUID. The same procedure was repeated for ROCKDEPH. The results were merged into a master list of MUID records as THICK_PERCDEPL and THICK_PERCDEPH. Soil permeability was calculated from the merged COMP and LAYER datafiles. For each component(SEQNUM), the minimum PERMH for all layers of that component was found and called PERMR(restrictive permeability for that component). The range of PERMR was divided into four categories as follows: 0.00 unknown 0.01 - 0.06 low 0.20 - 0.60 medium 2.00 - 20.00 high Each component was then classified into one of the four categories. For each map unit(MUID), the COMPPCT field was summed for each class separately and merged into a separate datafile. Any leftover percentage was assigned to the UNKNOWN field; UNKNOWN = 100 - HIGH - MEDIUM - LOW. The datafile then contained the necessary elements to produce a shaded map of the STATSGO polygons on the basis of either one of the classes or on all four using the class values as percentages of a color to display. The procedure for calculating soil texture is best defined as the following: (1) For each layer, define 5 new fields: layerthick = laydeph - laydepl avsiltclay = (no200l + no200h) / 2 avsand = 100 - avsiltclay avclay = (clayl + clayh) / 2 avsilt = avsiltclay - avclay (2) For each component, define: compthick = Sum(layerthick) compsand = Sum(avsand * layerthick / compthick) (3) For each map unit, define: text_sand = Sum(compsand * comppct / 100) (4) Repeat steps 2 and 3 for silt and clay. The datafile now contains the MUID and percentages of the map unit classified as having a sand, silt, or clay texture. The procedure for calculating soil classification is define as the following: (1) For each layer, define: if aashto = A-1 or A-3 then define aashclasl = 1 if aashto = A-4 or A-5 then define aashclasl = 2 if aashto = A-6 or A-7 then define aashclasl = 3 if aashto = A-2 then define aashclasl = 4 (2) For each component, define: sandthick = Sum(layerthick) for all layers where aashclasl = 1 siltthick = Sum(layerthick) for all layers where aashclasl = 2 claythick = Sum(layerthick) for all layers where aashclasl = 3 unsortthick = Sum(layerthick) for all layers where aashclasl = 4 if sandthick > MAX(siltthick, claythick, unsortthick) then define domaashclasc = 1 if siltthick > MAX(sandthick, claythick, unsortthick) then define domaashclasc = 2 if claythick > MAX(siltthick, sandthick, unsortthick) then define domaashclasc = 3 if unsortthick > MAX(siltthick, claythick, sandthick) then define domaashclasc = 4 (3) For each map unit, define: class_sand = Sum(comppct) for components where domaashclasc = 1 class_silt = Sum(comppct) for components where domaashclasc = 2 class_clay = Sum(comppct) for components where domaashclasc = 3 class_unsort = Sum(comppct) for components where domaashclasc = 4 The datafile now contains the MUID and percentages of the map unit classified as being sand, silt, clay, or unsorted. Revisions: V1.0 8/28/97 - Arc/Info datafile created from ArcView tables and added to the STATSGO database. Reviews_Applied_to_Data: 8/14/97 - Verified random records for correct property assignments. Related_Spatial_and_Tabular_Data_Sets: The MUID item in this data file can be related to the MUID item in any of the data files for the STATSGO data base. To be fully effective, relation to the STATSGO polygon attribute table (PAT) is recommended. Other_References_Cited: U.S. Department of Agriculture, Natural Resources Conservation Service, 1994, State Soil Geographic (STATSGO) data base for Tennessee: Fort Worth, Texas, U.S. Department of Agriculture and Natural Resources Conservation Service. Notes: None 1994 This data file contains information deemed current as of 1994, the time period of the STATSGO data base for Tennessee. Complete None planned -92.00015291 -79.9997575 37.00013903 34.00009759 None soil, thickness, permeability, texture, classification, STATSGO inlandWaters None State of Tennessee None None None None N/A This dataset can only be used with the STATSGO database. The data set is dependent upon the polygons represented by the STATSGO database which was created at a scale of 1:250,000 and should be used in applications appropriate for that scale. William J. Wolfe U.S. Geological Survey Mailing and physical address

640 Grassmere Park Drive, Suite 100

Nashville Tenn. 37211 USA 1-888-275-8747 (615) 837-4799 wjwolfe@usgs.gov 8:00am-4:30pm CST Please contact by email None None Unclassified None Windows_NT, 5.0, Intel NT, ARC/INFO version 8.0.2 U.S. Department of Agriculture, Natural Resources Conservation Service 1994 Map N/A N/A Fort Worth, Texas U.S. Department of Agriculture, Natural Resources Conservation Service See Entity_Attribute_Information See Explanation Attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section. Point features present. None See Metadata for the STATSGO coverage of Tennessee. 65 meters Resolution as reported N/A U.S. Department of Agriculture, Natural Resources Conservation Service 1994 250000 Digital Unknown None USDA, NRCS U.S. Department of Agriculture, Natural Resouces Conservation Service The STATSGO coverage for Tennessee was acquired. Copies of the COMP and LAYER data files were made. Fields not used in the calculations were deleted to speed processing. A new field named MUIDSEQ was added to both data files. This field was a concatenation of the MUID and the SEQNUM fields. The COMP data file was then merged into the LAYER data file using MUIDSEQ as the key. None 1997 None Soil thickness was calculated from the COMP datafile. Records were selected if ROCKDEPL was less than 60. The COMPPCT field was summed over all records for a given MUID. The same procedure was repeated for ROCKDEPH. The results were merged into a master list of MUID records as THICK_PERCDEPL and THICK_PERCDEPH. None 1997 None Soil permeability was calculated from the merged COMP and LAYER datafiles. For each component(SEQNUM), the minimum PERMH for all layers of that component was found and called PERMR(restrictive permeability for that component). The range of PERMR was divided into four categories as follows: 0.00 unknown 0.01 - 0.06 low 0.20 - 0.60 medium 2.00 - 20.00 high Each component was then classified into one of the four categories. For each map unit(MUID), the COMPPCT field was summed for each class separately and merged into a separate data file. Any leftover percentage was assigned to the UNKNOWN field; UNKNOWN = 100 - HIGH - MEDIUM - LOW. The data file then contained the necessary elements to produce a shaded map of the STATSGO polygons based on either one of the classes or all four using the class values as percentages of a color to display. None 1997 None The procedure for calculating soil texture is best defined as the following: (1) For each layer, define 5 new fields: layerthick = laydeph - laydepl avsiltclay = (no200l + no200h) / 2 avsand = 100 - avsiltclay avclay = (clayl + clayh) / 2 avsilt = avsiltclay - avclay (2) For each component, define: compthick = Sum(layerthick) compsand = Sum(avsand * layerthick / compthick) (3) For each map unit, define: text_sand = Sum(compsand * comppct / 100) (4) Repeat steps 2 and 3 for silt and clay. The data file now contains the MUID and percentages of the map unit classified as having a sand, silt, or clay texture. None 1998 None The procedure for calculating soil classification is described as the following: (1) For each layer, define: if aashto = A-1 or A-3 then define aashclasl = 1 if aashto = A-4 or A-5 then define aashclasl = 2 if aashto = A-6 or A-7 then define aashclasl = 3 if aashto = A-2 then define aashclasl = 4 (2) For each component, define: sandthick = Sum(layerthick) for all layers where aashclasl = 1 siltthick = Sum(layerthick) for all layers where aashclasl = 2 claythick = Sum(layerthick) for all layers where aashclasl = 3 unsortthick = Sum(layerthick) for all layers where aashclasl = 4 if sandthick > MAX(siltthick, claythick, unsortthick) then define domaashclasc = 1 if siltthick > MAX(sandthick, claythick, unsortthick) then define domaashclasc = 2 if claythick > MAX(siltthick, sandthick, unsortthick) then define domaashclasc = 3 if unsortthick > MAX(siltthick, claythick, sandthick) then define domaashclasc = 4 (3) For each map unit, define: class_sand = Sum(comppct) for components where domaashclasc = 1 class_silt = Sum(comppct) for components where domaashclasc = 2 class_clay = Sum(comppct) for components where domaashclasc = 3 class_unsort = Sum(comppct) for components where domaashclasc = 4 The data file now contains the MUID and percentages of the map unit classified as being sand, silt, clay, or unsorted. None 1998 None Point Point 1484 String 4456 GT-polygon composed of chains 1485 .002 .002 Decimal Degrees North American Datum of 1983 GRS1980 6378206.4 294.98 STATSGO_SOIL.PAT Polygon attribute table STATSGO database for Tenn. Shape Polygon attribute table STATSGO database for Tenn. Positive real numbers 2-dimensional element GIS software AREA Area of poly/region in square coverage units Computed Positive real numbers Area of region in square coverage units GIS software PERIMETER Perimeter of poly/region in coverage units Computed Positive real numbers Perimeter of region in coverage units GIS software STATSGO_SOIL# Internal feature number Computed Sequential unique positive integer Internal feature number GIS software STATSGO_SOIL-ID User-assigned feature number User-defined Integer User-assigned feature number GIS software MUID Map unit identification symbol STATSGO database for Tenn. AANNN - where AA is state abbreviation and NNN is a 3-digit number Map unit identification symbol STATSGO database for Tenn. STATSGO_SOIL.DERIVED Soil texture, classification, permeability, and thickness Computed/derived from STATSGO database for Tenn. Relateable datafile Soil texture, classification, permeability, and thickness Computed/derived from STATSGO database for Tenn. - Soil texture, classification, permeability, and thickness Computed/derived from STATSGO database for Tenn. MUID Map unit identification symbol STATSGO database for Tenn. AANNN - where AA is state abbreviation and NNN is a 3-digit number Map unit identification symbol STATSGO database for Tenn. THICK_PERCDEPL Percent of MUID with ROCKDEPL less than 60 Computed 0-100 Percent of MUID with ROCKDEPL less than 60 Computed THICK_PERCDEPH Percent of MUID with ROCKDEPH less than 60 Computed 0-100 Percent of MUID with ROCKDEPH less than 60 Computed PERM_HIGH Percent of MUID with a high restrictive permeability Computed 0-100 Percent of MUID with a high restrictive permeability Computed PERM_MEDIUM Percent of MUID with a medium restrictive permeability Computed 0-100 Percent of MUID with a medium restrictive permeability Computed PERM_LOW Percent of MUID with a low restrictive permeability Computed 0-100 Percent of MUID with a low restrictive permeability Computed PERM_UNKNOWN Percent of MUID with an unknown restrictive permability Computed 0-100 Percent of MUID with an unknown restrictive permability Computed TEXT_SAND Percent of MUID with a sandy texture Computed 0-100 Percent of MUID with a sandy texture Computed TEXT_SILT Percent of MUID with a silty texture Computed 0-100 Percent of MUID with a silty texture Computed TEXT_CLAY Percent of MUID with a clayey texture Computed 0-100 Percent of MUID with a clayey texture Computed CLASS_SAND Percent of MUID classified as sand Computed 0-100 Percent of MUID classified as sand Computed CLASS_SILT Percent of MUID classified as silt Computed 0-100 Percent of MUID classified as silt Computed CLASS_CLAY Percent of MUID classified as clay Computed 0-100 Percent of MUID classified as clay Computed CLASS_UNSORT Percent of MUID as unclassified Computed 0-100 Percent of MUID as unclassified Computed The DERIVED data file contains an MUID field for linking with the STATSGO database files and polygons. The data file also contains four soil properties broken into multiple classification fields. Each field value represents the percent-area of the corresponding MUID's polygon that the property applies to. Soil thickness is defined if the rock depth is less than 60 inches. Soil permeability is defined in four classes; high, medium, low, and unknown. Soil texture is divided into three classes; sand, silt, and clay. Soil classification is divided into four classes; sand, silt, clay, and unsorted. Valid values for each property field range from 0 to 100. Not available U.S. Geological Survey Ask USGS - Water Webserver Team mailing

445 National Center

Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+statsoil Although this data set has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Export Full coverage zipped 1 http://water.usgs.gov/GIS/dsdl/statsoil.e00.gz Other Full coverage zipped 1 http://water.usgs.gov/GIS/dsdl/statsoil.sdts.tgz None. This dataset is provided by USGS as a public service. 20041108 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing

445 National Center

Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+statsoil FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998