Wyoming_Alluvial_Valley_Floors_Current

20220803 13455500 FALSE Wyoming_Alluvial_Valley_Floors_Current_Extent 002 -110.645443 -105.152208 41.515476 45.005999 1 Geographic GCS_North_American_1983 Angular Unit: Degree (0.017453) <GeographicCoordinateSystem xsi:type='typens:GeographicCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.8'><WKT>GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG",4269]]</WKT><XOrigin>-399.99999999999989</XOrigin><YOrigin>-399.99999999999989</YOrigin><XYScale>1000000000.0000001</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-1072.7418235</MOrigin><MScale>4194304001953.124</MScale><XYTolerance>8.9831528411952117e-09</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><LeftLongitude>-180</LeftLongitude><WKID>4269</WKID><LatestWKID>4269</LatestWKID></GeographicCoordinateSystem> 20220728 11364200 20220728 11364200 1.0 150000000 5000 ItemDescription Wyoming Department of Environmental Quality, Land Quality Division January 2011 Wyoming_Alluvial_Valley_Floors_Current_Extent Wyoming_Alluvial_Valley_Floors_Current_Extent vector digital data First withheld ESRI ArcCatalog 9.3.1.3000 en This feature class contains the current extent of alluvial valley floors (AVFs) at and near coal mines in Wyoming. The dataset represents AVF determinations given by WDEQ-LQD to all permitted coal mining operations in the state, as well as operations that were never permitted and operations that were permitted but never mined. The feature class was created by the Land Quality Division (LQD) of the Wyoming Department of Environmental Quality. The feature class was created by editing previous AVF maps produced by WDEQ-LQD and incorporating new AVF determinations. In 1986/1987, WDEQ-LQD compiled existing AVF determinations from the permit State Decision Document (SDD), WDEQ-LQD correspondence, or other permit materials. The AVF determinations for each mine were drawn by hand onto 1:24,000-scale USGS topographic maps. In 1995/1996, these maps were digitized to produce a GIS coverage file. In 2009, accuracy of this coverage file was checked against findings in the SDD, LQD correspondence, and permit documents. The data was updated again in June 2022. Edits and new AVF determinations were added by scanning, georeferencing, and digitizing maps from the permit files. This feature class represents the current extent of AVF units. The WDEQ-LQD approved extent on some AVFs has changed over time at the Buckskin Mine, Dry Fork Mine, Coal Creek Mine, North Antelope Rochelle Mine, and Antelope Mine. This feature class represents the most current WDEQ-LQD approved extent of AVFs at these mines. The AVF extents in this feature class are considered current as of June 2022. Please refer to the supplemental documentation for further details on the AVF determinations for each mine and the mapping methods and assumptions used to create this dataset. These data are for display purposes only and do not represent survey grade information. The Land Quality Division of the Wyoming Department of Environmental Quality makes no warranties as to the validity, and assumes no liability associated with the use or misuse of this information.Each AVF in the feature class has a list of attributes that provides an identification or a description of the AVF."AVF_NAME" gives the name of the river or stream the AVF is located on, followed by the mine property name to identify the specific AVF."MINE_PROP" gives the name of mine property that the AVF falls under."DECL_DESC" specifies which mine determination the AVF is part of."LQD_DECLAR" specifies the type of AVF declaration made by the WDEQ-LQD for the AVF."DATE_DECL" shows when the AVF declaration was made."FILE_REF" references the document or file from the permit that includes original information on the determination for the AVF."NOTES" includes additional information on what was referenced to digitize the AVF extent."24K QUAD" serves as a geographic identifier for the AVF and names which quadrant from the Wyoming State 24K grid the AVF is in."ACRES" gives the real world area of the AVF in acres."REGION", "SUBREGION", "BASIN", "SUBBASIN", "WATERSHED", "SUBWSHED", and "HUC_12_ID" all serve to identify the specific watershed location of the AVF."SHAPE_Length" and "SHAPE_Area" describe the dementions of the AVF polygon in ArcMap or ArcPro. This feature class displays the current extent of alluvial valley floors (AVFs) at and near Wyoming coal mines. The dats set is current as of June 2022. Please refer to the supplemental documentation for further details on the AVF determinations and mapping methods and assumptions used to create this dataset. publication date January 2011 Complete Yearly -110.645443 -105.152208 44.999165 41.515476 -110.645443 -105.152208 41.515476 44.999165 0.000000 0.000000 None The user assumes all responsibility and liability for any use or misuse. Personal GeoDatabase Feature Class

122 West 25th Street

mailing and physical address

Herschler Building 3-W

Cheyenne Wyoming 82002 USA Wyoming Department of Environmental Quality 307-777-7055 307-777-5864 mkunze@wyo.gov Wyoming Department of Environmental Quality, Land Quality Division, June 2022. withheld Local Area Network 002 1.729 Personal GeoDatabase Feature Class File Geodatabase Feature Class Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362 Wyoming_Alluvial_Valley_Floors_Current_Extent -110.645443 -105.152208 44.999165 41.515476 1 -110.645443 -105.152208 44.999165 41.515476 1 1 -110.645443 -105.152208 45.005999 41.515476 This feature class displays the current extent of alluvial valley floors (AVFs) at and near Wyoming coal mines. The data set is current as of July 2022. <DIV STYLE="text-align:Left;"><DIV><DIV>This feature class contains the current extent of alluvial valley floors (AVFs) at and near coal mines in Wyoming. The dataset represents AVF determinations given by WDEQ-LQD to all permitted coal mining operations in the state, as well as operations that were never permitted and operations that were permitted but never mined. The feature class was created by the Land Quality Division (LQD) of the Wyoming Department of Environmental Quality. The feature class was created by editing previous AVF maps produced by WDEQ-LQD and incorporating new AVF determinations. In 1986/1987, WDEQ-LQD compiled existing AVF determinations from the permit State Decision Document (SDD), WDEQ-LQD correspondence, or other permit materials. The AVF determinations for each mine were drawn by hand onto 1:24,000-scale USGS topographic maps. In 1995/1996, these maps were digitized to produce a GIS coverage file. In 2009, accuracy of this coverage file was checked against findings in the SDD, LQD correspondence, and permit documents. The data was updated again in July 2022. Edits and new AVF determinations were added by scanning, georeferencing, and digitizing maps from the permit files. This feature class represents the current extent of AVF units. The WDEQ-LQD approved extent on some AVFs has changed over time at the Buckskin Mine, Dry Fork Mine, Coal Creek Mine, North Antelope Rochelle Mine, and Antelope Mine. This feature class represents the most current WDEQ-LQD approved extent of AVFs at these mines. The AVF extents in this feature class are considered current as of July 2022. Please refer to the supplemental documentation for further details on the AVF determinations for each mine and the mapping methods and assumptions used to create this dataset. These data are for display purposes only and do not represent survey grade information. The Land Quality Division of the Wyoming Department of Environmental Quality makes no warranties as to the validity, and assumes no liability associated with the use or misuse of this information.Each AVF in the feature class has a list of attributes that provides an identification or a description of the AVF."AVF_NAME" gives the name of the river or stream the AVF is located on, followed by the mine property name to identify the specific AVF."MINE_PROP" gives the name of mine property that the AVF falls under."DECL_DESC" specifies which mine determination the AVF is part of."LQD_DECLAR" specifies the type of AVF declaration made by the WDEQ-LQD for the AVF."DATE_DECL" shows when the AVF declaration was made."FILE_REF" references the document or file from the permit that includes original information on the determination for the AVF."NOTES" includes additional information on what was referenced to digitize the AVF extent."24K QUAD" serves as a geographic identifier for the AVF and names which quadrant from the Wyoming State 24K grid the AVF is in."ACRES" gives the real world area of the AVF in acres."REGION", "SUBREGION", "BASIN", "SUBBASIN", "WATERSHED", "SUBWSHED", and "HUC_12_ID" all serve to identify the specific watershed location of the AVF."SHAPE_Length" and "SHAPE_Area" describe the dementions of the AVF polygon in ArcMap or ArcPro."AVF_ID" is a specific identifier assigned to individual AVFs which includes a prefix that stands for the river basin in which the AVF is located.</DIV></DIV></DIV> Wyoming Department of Environmental Quality, Land Quality Division, July 2022. <DIV STYLE="text-align:Left;"><DIV><DIV>The user assumes all responsibility and liability for any use or misuse.</DIV></DIV></DIV> Alluvial Valley Floors Wyoming en FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time mailing and physical address Cheyenne Wyoming 82002

122 West 25th Street

Herschler Building 3-W

USA 307-777-7055 Matt Kunze Wyoming Department of Environmental Quality, Land Quality Division Natural Resources Analyst 307-777-5864 mkunze@wyo.gov 20110113 The user assumes all responsibility and liability for any use or misuse. ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset 1.729 1.729 Downloadable Data Vector Simple FALSE 54 TRUE FALSE GCS_North_American_1983 Decimal degrees 0.000000 0.000000 North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Explicit elevation coordinate included with horizontal coordinates 0.000100 GCS_North_American_1983 EPSG 9.8(3.0.1) 54 Wyoming_Alluvial_Valley_Floors_Current_Extent Feature Class 54 The current extent of alluvial valley floors (AVFs) at and near Wyoming coal mines. WDEQ/LQD OBJECTID OBJECTID OID 4 0 0 Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape SHAPE Geometry 0 0 0 Feature geometry. ESRI Coordinates defining the features. AVF_NAME AVF_NAME String 50 Name of the stream or AVF unit and the mine property the AVF unit is located at. 0 0 WDEQ/LQD MINE_PROP MINE_PROP String 50 Name of the mine property the AVF unit is located at. 0 0 WDEQ/LQD DECL_DESC DECL_DESC String 50 A general description of the AVF declaration. 0 0 WDEQ/LQD LQD_DECL LQD_DECLAR String 50 0 0 WDEQ/LQD The LQD declaration for the AVF unit. Possible determinations include: (1) AVF - Significant to Farming, (2) AVF - Not Significant to Farming, (3) AVF - Grandfathered, (4) AVF - No Significance to Farming Test Completed, and (5) Not an AVF. Please refer to the supplemental documentation for further details on these determinations. DATE_DECL DATE_DECL Date 8 The date the AVF declaration was made. The date generally refers to when either the determination letter was signed by LQD or when the State Decision Document (SDD) was signed. 0 0 WDEQ/LQD FILE_REF FILE_REF String 50 A reference to the mine permit number, permit document or map, or temporary filing number (TFN) that was used to obtain the AVF determination information. 0 0 WDEQ/LQD QUAD24K 24KQUAD String 50 0 0 The name of the USGS 24-K quadrangle map(s) the AVF unit is located in. USGS NOTES NOTES String 50 General notes on the AVF unit or mapping process. Please refer to the supplemental documentation for further details on the determinations and mapping methods and assumptions used. 0 0 WDEQ/LQD ACRES ACRES String 50 The number of acres the AVF unit represents. NA = not available. 0 0 WDEQ/LQD SUBREGION SUBREGION String 50 0 0 The name of the subregion the AVF unit is located in. The subregion level can also be represented by the 4-digit Hydrologic Unit Code (HUC). USGS REGION REGION String 50 0 0 The name of the region the AVF unit is located in. The region level can also be represented by the 2-digit Hydrologic Unit Code (HUC). USGS WATERSHED WATERSHED String 50 0 0 The name of the watershed the AVF unit is located in. The watershed level can also be represented by the 10-digit Hydrologic Unit Code (HUC). USGS BASIN BASIN String 50 0 0 The name of the basin the AVF unit is located in. The basin level can also be represented by the 6-digit Hydrologic Unit Code (HUC). USGS SUBBASIN SUBBASIN String 50 The name of the subbasin the AVF unit is located in. The subbasin level can also be represented by the 8-digit Hydrologic Unit Code (HUC). 0 0 USGS SUBWSHED SUBWSHED String 50 The name of the subwatershed the AVF unit is located in. The subwatershed level can also be represented by the 12-digit Hydrologic Unit Code (HUC). 0 0 USGS HUC_12_ID HUC_12_ID String 50 The 12-digit Hydrologic Unit Code (HUC) the AVF unit is located in. The 12-digit HUC refers to the sixth-level classification or subwatershed level. 0 0 USGS SHAPE_Length SHAPE_Length Double 8 0 0 Length of feature in internal units. ESRI Positive real numbers that are automatically generated. SHAPE_Area SHAPE_Area Double 8 0 0 Area of feature in internal units squared. ESRI Positive real numbers that are automatically generated. AVF_ID AVF_ID String 255 0 0 20220728 /9j/4AAQSkZJRgABAQEAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0a HBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIy MjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjL/wAARCACFAMgDASIA AhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQA AAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3 ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWm p6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEA AwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSEx BhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElK U1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3 uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwD3+iii gAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKA CiiigCrdXZhhd4kEgQHcxYBUx13d/wAgai0vUJdStxcG28qFvuMWPzj+8AQDtPbOD7U6fSdPuR+9 s4W+YMfkHJBzz6//AK/WriqqIqIoVVGAoGABQAtFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFAB RRRQAUUUUAFFFFABRRRQAUUUUAFFFNcsEYooZgOATjJ+tADqKRSxRSw2sRyM5waWgAooooAKKKhk uo4riOGTcpk4RiPlJ/u59eKAJqasiOWCOrbTtbBzg+hp1Vols7BUt0aOLcxKqz8sxPvySTQBZooo oAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigClqFxPA1sLaPzJJZdmCDtAxkkkdOlXaK KACiiigApCoYYYAjOeaWigAqvcQSTS27JJtEblipHX5SB+pqxRQBDAi20MNuCx2rtU7TjAHfsKmq F7qJIxIWypcIMepOKmoAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACii igAooooAjit4YECQwxxoOiooA/SpKKjM0YmEJYCQjIB4z9PWgCSiiigAooooAKKKKACiiigAoooo AKKKKACiiigAooooAKKKKACiiigAooooAKKKKACoTJKt0EYR+Uw+U5O7PfjGP1qCW7njuSBbStCu AWAHU9xzz2GMUthczziRZ7aaPafleQAbx9ATyOh7HGR6AAuUUUUAFFFFABRRRQAUUUUAFFFFABRR RQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQA1kVipZQdpyM9jTqKKACiiigAooooAKKKKACiiigAo oooAKKKKACiiigAooooAKKKKACiiigAooooAQA5OTnJ49qWiigAooooAKKKKACiiigAooooAKKKK ACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigD/2Q==