{dde72f05-11da-4b0a-b064-9c1631bf04f4} eng; USA utf8 dataset EnviroAtlas Coordinator U.S. Environmental Protection Agency, Office of Research and Development-Sustainable and Healthy Communities Research Program, 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 - Los Angeles, CA - Greenspace Around Schools by Block Group 2019-07-13 publication U.S. EPA Office of Research and Development (ORD) - National Exposure Research Laboratory (NERL) Research Triangle Park NC publisher U.S. Environmental Protection Agency (US EPA) originator This EnviroAtlas data set shows the number of schools in each block group in the EnviroAtlas community boundary as well as the number of schools where less than 25% of the area within 100 meters of the school is classified as greenspace. green space is defined as Trees & Forest, Shrubs, Grass & Herbaceous, Woody Wetlands, and Emergent Wetlands. This dataset was produced by the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (https://www.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 dataset is to show block groups within the EnviroAtlas community boundary that have schools with little green space within their proximity. 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-Sustainable and Healthy Communities Research Program, 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 Census Block Groups Communities Demographics Ecosystem Services EnviroAtlas Environment Environmental Atlas Green Space Human Well-being theme EnviroAtlas California Los Angeles, CA place None https://edg.epa.gov/EPA_Data_License.html otherRestrictions Use Constraints: None. Please check sources, scale, accuracy, currency 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 -118.9272 -117.65058 33.24023 34.83098 2011-01-01 2014-01-01 2016-01-01 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 dataset describes the number of schools in each block group and the number of those schools with less than or equal to 25% greenspace within 100 meters. The 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-Sustainable and Healthy Communities Research Program, 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//LACA_metrics_May2021_CSV_Shapes.zip download Download The URL providing direct access to the downloadable dataset. download https://enviroatlas.epa.gov/download//LACA_metrics_May2021_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/Communities/Community_BGmetrics/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 2011 HSIP (Homeland Security Infrastructure Program) point layers for daycares, public schools, and private schools where public and private schools have been merged into one K-12 layer. 2012-03-01T00:00:00 Use spatial join to add the Census Block Group GeoID of each school to the school's attribute record 2012-03-01T00:00:00 Clip each point layer to the EnviroAtlas community boundary. 2019-07-12T00:00:00 Project each point layer into the projection of the land cover. 2019-07-12T00:00:00 Reclassify the 1-Meter EnviroAtlas Land Cover Classification for the EnviroAtlas community into Binary Green Space. (Trees & Forest - 40, Shrubs - 52, Grass & Herbaceous - 70, Woody Wetlands - 91, Emergent Wetlands - 92 = 1; All Else = 0) 2019-08-12T00:00:00 Run Focal Statistics on the Green Space Binary Raster with a circular window of 100 meters and statistics = SUM. 2019-07-13T00:00:00 Extract Values to Points from the focal statistics raster to both the Daycare and K12 points with Census Block Group GeoIDs and append values to the point file 2019-07-13T00:00:00 Add new field to each point layer: Green_Pct (float) and calculate where Green_Pct = RASTERVALU / 31417 * 100 (limited to 2 decimal places). 2019-07-13T00:00:00 From each point layer, select records with Green_Pct <= 25, then summarize the count of selected schools by block group. 2019-07-13T00:00:00 Create a new table based on the EnviroAtlas community block groups table retaining the BGRP field. 2019-07-13T00:00:00 Add fields to the new table for K12_Count (short), K12_Low (short), Day_Count (short), and Day_Low (short). 2019-07-13T00:00:00 Join each of the summarized tables with the new table and calculate the corresponding field in the new table. 2019-07-13T00:00:00 Calculate fields where K12_Count = 0: K12_Low = -99999 and Day_Count = 0: Day_Low = -99999 2019-07-13T00:00:00 Export the fields to be displayed in EnviroAtlas to a final gdb table: K12_Count, K12_Low, Day_Count, Day_Low. 2019-07-13T00:00:00 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-Sustainable and Healthy Communities Research Program, 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