{408f3030-63b6-4682-857d-58f7bfc7befc} eng; USA utf8 dataset EnviroAtlas Coordinator U.S. Environmental Protection Agency, Office of Research and Development - Center for Public Health and Environmental Assessment CPHEA, EnviroAtlas Geospatial Data Owner 919 541-3832 109 T.W. Alexander Drive Research Triangle Park NC 27709 EnviroAtlas@epa.gov https://www.epa.gov/enviroatlas pointOfContact 2025-02-13 ISO 19115 Geographic Information - Metadata ISO 19115:2003/Cor.1:2006(E) EnviroAtlas - Tacoma, WA - Greenspace Proximity Gradient 2022-07-13 publication U.S. EPA Office of Research and Development (ORD) - Center for Public Health and Environmental Assessment (CPHEA) Research Triangle Park NC publisher US Environmental Protection Agency (US EPA) originator In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of square meters of greenspace within 1/4 square kilometer centered over the given point. In this community, green space is defined as Trees & Forest, Grass & Herbaceous, Woody Wetlands, and Emergent Wetlands. Water is shown as "-99999" in this dataset to distinguish it from land areas with very low green space. This dataset was produced by the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (http://enviroatlas.epa.gov/EnviroAtlas) allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data (https://edg.epa.gov/data/Public/ORD/EnviroAtlas) or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets). The purpose of this data is to show the density of greenspace throughout the EnviroAtlas community boundary and the gradients of change in the amount of greenspace. The overall goal of EnviroAtlas is to employ and develop the best available science to map indicators of ecosystem services production, demand, and drivers for the nation. completed EnviroAtlas Coordinator U.S. Environmental Protection Agency, Office of Research and Development - Center for Public Health and Environmental Assessment (CPHEA), EnviroAtlas Geospatial Data Owner (919) 541-3832 109 T.W. Alexander Drive Research Triangle Park NC 27709 EnviroAtlas@epa.gov https://www.epa.gov/enviroatlas pointOfContact asNeeded Ecosystem Environment theme EPA GIS Keyword Thesaurus Communities Ecosystem Services EnviroAtlas Environment Environmental Atlas Green Space Human Well-being Land Cover theme EnviroAtlas Tacoma, WA Washington place None https://edg.epa.gov/EPA_Data_License.html otherRestrictions Use Constraints: None. Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the EPA would be appreciated. otherRestrictions Access Constraints: None. PUBLIC https://project-open-data.github.io/schema/#accessLevel Standard Technical Controls eng; USA environment -122.76678 -121.90338 46.86297 47.39917 2013-11-05 true Entity and Attribute Information Entity and Attribute Overview: For more information about EnviroAtlas data, go to https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets. This layer shows the percentage of greenspace within 250m of any given point in the EnviroAtlas community boundary. Processing steps were completed using Python scripts. A comprehensive list of metric creation steps is included in the Processing Steps. Entity and Attribute Detail Citation: https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets EnviroAtlas Coordinator U.S. Environmental Protection Agency, Office of Research and Development - Center for Public Health and Environmental Assessment CPHEA, EnviroAtlas Geospatial Data Owner 919 541-3832 109 T.W. Alexander Drive Research Triangle Park NC 27709 EnviroAtlas@epa.gov https://www.epa.gov/enviroatlas distributor https://enviroatlas.epa.gov/download/TacWA_metrics_Mar2023_CSV_Shapes.zip download Download The URL providing direct access to the downloadable dataset. download https://enviroatlas.epa.gov/download/TacWA_metrics_Mar2023_FGDB.zip ESRI:ArcGIS API The endpoint of a web service to access the dataset (REST endpoint, WMS GetCapabilities URL, or a SOAP WSDL endpoint). webMapService https://enviroatlas.epa.gov/arcgis/rest/services/Supplemental/GreenProx_AllCommunities/MapServer information Documentation URL for accessing related documents such as data dictionary, technical information about a dataset, developer documentation, etc. information https://www.epa.gov/enviroatlas/enviroatlas-data information Home Page Alternative landing page used to redirect user to a contextual, Agency-hosted "homepage" for the Dataset or API information dataset Horizontal Positional Accuracy Report Data were collected using methods that have unknown accuracy (EPA National Geospatial Data Policy [NGDP] Accuracy Tier 10). For more information, please see EPA's NGDP at https://epa.gov/geospatial/policies.html Features represented have not been tested for completeness Features represented have not been tested for completeness Tests for integrity have not been performed. This lineage was generated by the FGDC CSDGM to 19139 transformation Begin with the 1-M Land Cover for the EnviroAtlas community, created by the US EPA EnviroAtlas Team. 2022-07-13T00:00:00 Reclassify the Land Cover into Binary Greenspace. (Trees & Forest - 40, Grass & Herbaceous - 70, Woody Wetlands - 91, Emergent Wetlands - 92 = 1; All Else = 0) 2022-07-06T00:00:00 Calculate focal statistics on the Green Space Binary using a 251 wide by 251 high rectangular window with statistics type = sum. 2022-07-13T00:00:00 Reclassify the Focal Statistics into 5 classes at 20% intervals. 2022-07-13T00:00:00 Create a water binary from the 1-M EnviroAtlas Land Cover. (Water - 10 = 1; All Else = 0). 2022-07-06T00:00:00 Run the region group tool to group waterbodies together with options number of neighbors to use: EIGHT, zone grouping method: WITHIN, and ADD_LINK (add link field to output). 2022-07-06T00:00:00 Using the region group output, burn water bodies over 300m2 into the green space percent raster using a conditional statement if Region Group Count > 299 AND Link = 1; for true: -99999; for false: green space percent raster 2022-07-13T00:00:00 Clip the EnviroAtlas Community Boundary to the county lines for the community to limit the output to land area. 2022-07-06T00:00:00 Convert the raster into an Esri GRID format. 2022-07-13T00:00:00 Split the raster into pieces of no more than 40,000x40,000 pixels. 2022-07-13T00:00:00 Convert each of the raster pieces into a polygon feature class. 2022-07-13T00:00:00 Clip the polygon feature classes to the clipped EnviroAtlas community boundary. 2022-07-13T00:00:00 Dissolve each piece based on grid_code. 2022-07-13T00:00:00 Merge the pieces back together. 2022-07-13T00:00:00 Dissolve again based on grid_code. 2022-07-13T00:00:00 Rename field 'gridcode' into field 'GreenProxP' 2022-07-13T00:00:00 Project the feature class into Albers. 2022-07-13T00:00:00 Copy the feature class to the final geodatabase. 2022-07-13T00:00:00 unknown 2029-02-13 This metadata was automatically generated from the FGDC Content Standard for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2024-02-09T11:11:00 version of the FGDC CSDGM to ISO 19139 transform. EnviroAtlas Coordinator U.S. Environmental Protection Agency, Office of Research and Development - Center for Public Health and Environmental Assessment CPHEA, EnviroAtlas Geospatial Data Owner 919 541-3832 109 T.W. Alexander Drive Research Triangle Park NC 27709 EnviroAtlas@epa.gov https://www.epa.gov/enviroatlas pointOfContact