20210623095705001.0FALSEMosaicToNewRaster R1\Valleys;R2\valleys;R3\Valleys;R9\Valleys L:\Tasks\2018\Task11852_ValleysVersion2\202106.gdb Valleys # 32_BIT_FLOAT # 1 LAST FIRSTValleys002-4623153.434720724966.658387-290626.3450421561483.9788791file://\\s0101boec001.AA.AD.EPA.GOV\gis\Tasks\2018\Task11852_ValleysVersion2\Valleys_R1239.gdbLocal Area NetworkProjectedGCS_North_American_1983Linear Unit: Meter (1.000000)NAD_1983_Albers<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' 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>PROJCS[&quot;NAD_1983_Albers&quot;,GEOGCS[&quot;GCS_North_American_1983&quot;,DATUM[&quot;D_North_American_1983&quot;,SPHEROID[&quot;GRS_1980&quot;,6378137.0,298.257222101]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Albers&quot;],PARAMETER[&quot;False_Easting&quot;,0.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,-74.5],PARAMETER[&quot;Standard_Parallel_1&quot;,40.33333333],PARAMETER[&quot;Standard_Parallel_2&quot;,44.66666666],PARAMETER[&quot;Latitude_Of_Origin&quot;,39.0],UNIT[&quot;Meter&quot;,1.0]]</WKT><XOrigin>-15807800</XOrigin><YOrigin>-8447900</YOrigin><XYScale>284897305.59410512</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision></ProjectedCoordinateSystem>202107261058100020230201103720001500000005000ISO19115_3 Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362Valleys - US EPA Regions 1, 2, 3, 9 (2022) and 10 (2024)EPA Contact0b2cb80228ba5fac06f74072230d716ffe3f6d97U.S. Environmental Protection Agency, Region 1Alexandra DichterGIS Coordinator5 Post Office Square, Suite 100BostonMA02109dichter.alexandra@epa.gov(617) 918-1142https://www.epa.gov/aboutepa/epa-region-1-new-englandwebsiteTrue[EPA Contact] Alexandra Dichter0-131.625395-63.94371653.10910724.527329Valleys are locations that have a lower elevation than surrounding areas, which may be vulnerable to wood smoke pollution during winter thermal inversions.Valleys, featured in the Valley Identification Tool, are locations that have a lower elevation than surrounding areas. EPA Region 1 GIS Center applied ArcGIS' Focal Statistics tool to the USGS 30-meter NED DEM to find places where elevations are significantly less than average. We then quantified population and wood fuel usage within Census County Subdivisions to find locations which may be vulnerable to wood smoke pollution during winter thermal inversions. Created by US EPA Region 1 GIS Center; and implemented in EPA Regions 2, 3 and 9 in 2022 and Region 10 in 2024 by regional GIS staff, US EPA Office of Mission Support (OMS).Created by US EPA Region 1 GIS Center; and implemented in EPA Regions 2, 3, 9 and 10 by regional GIS staff, US EPA Office of Mission Support (OMS).EPA Place Names2015-01-31https://ofmpub.epa.gov/sor_internet/registry/termreg/searchandretrieve/taxonomies/search.do?search=&searchString=&taxonomyName=WBT%20-%20Geographic%20LocationsWeb Taxonomy - Geographic LocationsArizonaCaliforniaChesapeake BayConnecticutDelawareMaineMarylandMassachusettsNevadaNew HampshireNew JerseyNew YorkPennsylvaniaRhode IslandVermontVirginiaWashington DCWest VirginiaFederal Program Inventory2013-09-16https://www.performance.gov/federalprograminventoryFederal Program Inventory020:072EPA GIS Keyword Thesaurus2007-11-02https://www.epa.gov/geospatial/epa-metadata-technical-specificationEPA Metadata Technical SpecificationAirEnvironmentExposureHealthEPA Contact0b2cb80228ba5fac06f74072230d716ffe3f6d97U.S. Environmental Protection Agency, Region 1Alexandra DichterGIS Coordinator5 Post Office Square, Suite 100BostonMA02109dichter.alexandra@epa.gov(617) 918-1142https://www.epa.gov/aboutepa/epa-region-1-new-englandwebsiteTrue[EPA Contact] Alexandra DichterUnrestricted Licensehttps://edg.epa.gov/EPA_Data_License.htmlEPA Public Domain LicenseElevationEnvironmentHealthArizonaCaliforniaChesapeake BayConnecticutDelawareMaineMarylandMassachusettsNevadaNew HampshireNew JerseyNew YorkPennsylvaniaRhode IslandVermontVirginiaWashington DCWest VirginiaAirExposureIT / Data Management (Science and TechnologyEnvironmental Programs and ManagementSuperfundLeaking Underground Storage Tanks)File Geodatabase Raster Datasethttps://epa.maps.arcgis.com/home/item.html?id=72e1d1263c5049928ac78649caf924a0https://edg.epa.gov/data/Public/R1/Valleys_R1239.gdb.zipdatasetPixel6707119367327.61417527.614175321Upper LeftFALSELZ771pixel codesFGDBRTRUErow and column27.61417527.6141752024-06-260D1AD68E-D2F1-4400-A2AF-CD0362A25FDCEPA Contact0b2cb80228ba5fac06f74072230d716ffe3f6d97U.S. Environmental Protection Agency, Region 1Alexandra DichterGIS Coordinator5 Post Office Square, Suite 100BostonMA02109dichter.alexandra@epa.gov(617) 918-1142https://www.epa.gov/aboutepa/epa-region-1-new-englandwebsiteTrue[EPA Contact] Alexandra DichterEPA Region 1 GIS Center applied ArcGIS' Focal Statistics tool to the USGS 30-meter NED DEM to find places where elevations are significantly less than average. We then quantified population and wood fuel usage within Census County Subdivisions to find locations which may be vulnerable to wood smoke pollution during winter thermal inversions.