This Map Image depicts the Level III and Level IV Ecoregions throughout the United States. The purpose of this map is to show Ecoregions that denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. The intended audience is for the general public. There are two grouped layers in this map, Level III Ecoregions and Level IV Ecoregions. The first layer represents Level III Omernik Ecoregions. At Level III, the continental United States contains 104 regions whereas the conterminous United States has 84 (US Environmental Protection Agency, 2005). Level IV ecoregions are further subdivisions of Level III ecoregions. The second grouped layer represents Level IV Omernik Ecoregions. Level IV ecoregions are intended for large geographic extents (i.e. states, multiple counties, or river basins). Compilation of the level IV maps have been performed at 1:250,000 scale. For more information about Omernik ecoregions or to download ecoregion maps and GIS data, go to:http://www.epa.gov/wed/pages/ecoregions.htm. For additional information about this mapping service or to obtain the ecoregion data used to create the service, contact US EPA GIS Agency Central Support, esrisupport@epa.gov.

Information on sole source aquifers (SSAs) is widely used in assessments under the National Environmental Policy Act and at the state and local level. A national layer, including all available SSA coverages, is available for use in GIS. This layer includes the GIS polygons for SSAs. In addition to single SSA designated area polygons, some EPA regional offices have delineated GIS layers for: * Streamflow zones * Aquifer recharge areas * Other features at the land surface important for SSA designations. The SSA geospatial data set is available through Data.gov for use by government agencies, private organizations, and the public.

This feature service consists of location and facility identification information from EPA's Facility Registry Service (FRS) for all sites that are available in the FRS individual feature layers. Although we have taken all available measures to optimize performance, because this service contains the full universe of FRS regulated facilities, the total data volume may lead to slow performance for many applications. We strongly recommend choosing from one of the feature services below which comprise the FRS major program databases, including: Assessment Cleanup and Redevelopment Exchange System (ACRES) : brownfields sites Air Facility System (AFS) : stationary sources of air pollutionICIS-AIR (AIR) : stationary sources of air pollutionBureau of Indian Affairs (BIA) : schools data on Indian landBase Realignment and Closure (BRAC) facilitiesClean Air Markets Division Business System (CAMDBS) : market-based air pollution control programsComprehensive Environmental Response, Superfund Enterprise Management System (SEMS): hazardous waste sitesIntegrated Compliance Information System (ICIS) : integrated enforcement and compliance informationNational Compliance Database (NCDB) : Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) and the Toxic Substances Control Act (TSCA)National Pollutant Discharge Elimination System (NPDES) module of ICIS : NPDES surface water permitsRadiation Information Database (RADINFO) : radiation and radioactivity facilitiesRACT/BACT/LAER Clearinghouse (RBLC) : best available air pollution technology requirementsResource Conservation and Recovery Act Information System (RCRAInfo) : tracks generators, transporters, treaters, storers, and disposers of hazardous wasteToxic Release Inventory (TRI) : certain industries that use, manufacture, treat, or transport more than 650 toxic chemicalsEmission Inventory System (EIS) : inventory of large stationary sources and voluntarily-reported smaller sources of air point pollution emittersCountermeasure (SPCC) and facility response plan (FRP) subject facilitiesElectronic Greenhouse Gas Reporting Tool (E-GGRT) : large greenhouse gas emittersEmissions and; Generation Resource Integrated Database (EGRID) : power plantsThe Facility Registry Service (FRS) identifies and geospatially locates facilities, sites or places subject to environmental regulations or of environmental interest. Using vigorous verification and data management procedures, FRS integrates facility data from EPA's national program systems, other federal agencies, and State and tribal master facility records and provides EPA with a centrally managed, single source of comprehensive and authoritative information on facilities. This data set contains the FRS facilities that link to the programs listed above once the program data has been integrated into the FRS database. Additional information on FRS is available at the EPA website https://www.epa.gov/frs.

EPA also publishes a download package that includes a file geodatabase, Esri ArcMap map document and an XML file of this metadata record and is refreshed on the same cycle as this service. Full FGDC metadata records for each layer are contained in the database.

This dataset offers a link to the California segment of the Surf Your Watershed service offered by the United States Environmental Protection Agency (EPA). Surf Your Watershed is a service to help locate, use, and share watershed environmental information. A driving force behind Surf Your Watershed is to get environmental information into the hands of active citizens and groups to help those people connect and share information, ideas, and assistance.

This is a points dataset of the location of emission site facilities, including IPC (Integrated Pollution Control), IE (Industrial Emission) and Waste facilities that are currently licensed by the EPA.

This GIS dataset contains points depicting U.S. EPA Superfund features. This dataset is reserved for important Superfund site features that are best captured as point features in geospatial datasets. Superfund features are managed by regional teams of geospatial professionals and remedial program managers (RPMs), and SEGS harvests regional data on a weekly basis to refresh the national dataset and feature services.

This GIS dataset contains polygons depicting U.S. EPA Superfund Operable Unit boundaries. The operable unit (OU) polygons represent an individual OU’s perimeters, which are used to identify a portion of a Superfund site with which assessment and response actions are associated. CERCLA regulations (40 C.F.R. § 307.14) define an OU as a “discrete portion of a remedial response [that] manages migration, or eliminates or mitigates a release, threat of release, or pathway of exposure. The cleanup of a site can be divided into a number of operable units . . . [that] may address geographical portions of a site.” Determined on a site-specific basis, OUs may represent distinct geographic areas, media or releases. Note that OUs may overlap geographically when representing distinct media or areas of concern. OU boundaries become the building blocks of site boundaries. Superfund features are managed by regional teams of geospatial professionals and remedial program managers (RPMs), and SEGS harvests regional data on a weekly basis to refresh the national dataset and feature services.

This is a dataset of the air quality zones listed on http://www.epa.ie/air/quality/zones/.

The zones were defined initially in the Air Quality Regulations (SI 180 of 2011). The EPA reviews the zones regularly and amends when necessary.

CDFW BIOS GIS Dataset, Contact: Wendy Reid, Description: This dataset contains a portion of the 2002 303(d) list of impaired waterbodies in California. The rivers and bay and shoreline shapefiles for each Regional Water Quality Control Board were downloaded from the State Water Resources Control Board website, merged, simplified and new fields added. The majority of records have a link to a US EPA website containing more detailed pollutant information for each waterbody.

To spatially represent the line dividing the Inland and Coastal response zones defined in the MOA, for use of federal on-scene coordinators in determining who will respond to an incident involving oil or hazardous substances. Delineation of Inland/Coastal Boundary Line Within EPA Region 4 and USCG Districts 5, 7, and 8 Captain of the Port Areas, which is described in Appendix 1 of the US Coast Guard and US Environmental Protection Agency Region 4 MOA. (MEMORANDUM OF AGREEMENT BETWEEN U. S. COAST GUARD FIFTH, SEVENTH, AND EIGHTH DISTRICTS AND U. S. ENVIRONMENTAL PROTECTION AGENCY, REGION 4 REGARDING RESPONSE BOUNDARIES FOR OIL AND HAZARDOUS SUBSTANCES POLLUTION INCIDENTS AND FEDERAL ON-SCENE COORDINATOR RESPONSIBILITIES, signed October 29, 2013)

EPA NEPAssistThis interactive web-based application draws environmental data from publicly available federal, state, and local GIS sources and web services and provides immediate screening of environmental assessment indicators for a user-defined area of interest. This information includes data on regulated facilities, demographics, historic places, threatened and endangered species, wetlands, and other topics. These features contribute to a streamlined review process that potentially raises important environmental issues at the earliest stages of project development.

This is a point dataset of Industrial Emissions Licensing facilities. The Environmental Protection Agency (EPA) is the competent authority for granting and enforcing Industrial Emissions (IE) licences for specified industrial and agriculture activities listed in the First Schedule to the Environmental Protection Agency Act 1992 as amended.For more information on this dataset please go to https://gis.epa.ie/geonetwork/srv/eng/catalog.search#/metadata/7905844c-a43d-4dd4-b262-c95c7aa0e9c7

This dataset shows the location of urban waste water discharges.

Further information about each licence and their discharge locations can be found on the EPA website - www.epa.ie.

EPA brownfield locations in Wyoming.Use the following link to access, view, and download EPA data: https://www.epa.gov/frs

The Sole Source Aquifer datalayer was compiled by the Department of Environmental Protection (DEP) Division of Water Supply (DWS). Seven Sole Source Aquifers have been designated by the US Environmental Protection Agency (EPA) for Massachusetts. A Sole Source Aquifer (SSA) is an aquifer designated by US EPA as the 'sole or principal source' of drinking water for a given aquifer service area; that is, an aquifer which is needed to supply 50% or more of the drinking water for that area and for which there are no reasonably available alternative sources should that aquifer become contaminated.More details...Map service also available.

This ArcGIS 10.3 point feature class contains identification, location, and outfall attributes including outfall size and receiving water body, class, and contributor information for New York City combined sewer outfalls (CSOs). The information is provided by New York City in their draft SPDES Permit with NYSDEC. This information layer and all R2 GIS layers are maintained in a SQLServer 2012 geodatabase. The National Pollutant Discharge Elimination System (NPDES) program is implemented by NYSDEC via the compliance and enforcement elements of the State Pollutant Discharge Elimination System (SPDES) permit program. This GIS layer supports an ArcGIS relationship class with the attribute table titled EPA_FACILITIES_R2_RELATE_NPDES_CSO_DSCH. This table provides information about outfall events in terms of size (million gallons/year) and number of events per year for select CSOs. The National Pollutant Discharge Elimination System (NPDES) permit program is authorized by the Clean Water Act. The Integrated Compliance Information System (ICIS) for NPDES data exchange allows Partners to provide ICIS-NPDES data to EPA in an XML format and provides processing results to assist Partners with correcting common errors that may occur with their submissions.

For more information on this dataset please go to https://gis.epa.ie/geonetwork/srv/eng/catalog.search#/metadata/5f1999f0-37e4-4c14-acf8-3b42bfdae894The Teagasc Subsoils map classifies the subsoils of Ireland into 16 themes, using digital stereo photogrammetry supported by field work. Produced by Teagasc (Kinsealy), EPA and GSI.The dataset was created using a compilation of existing data, photogrammetric mapping, field studies. Soil survey maps, Quaternary maps and published and unpublished reports were complied and boundaries between sediment types are interpreted and mapped using photo-interpretation in a soft copy photogrammetric workstation with digital stereo-pairs of black and white photography acquired at a scale of 1:40,000. Fieldwork was carried out, around the flanks of large bogs delineate the exact boundary between peat and mineral soils but predominantly within the boundary zones of differencing subsoils. Areas mapped during the photogrammetric analysis were also checked during the fieldwork. Methods adopted during field mapping include reconnaissance mapping, auger sampling, trenching, digital photography and GPS data recording. Aerial photography datasets involved in mapping were acquired in 1995 while field data collected was collected during 1998-2005.The classification of subsoils is based on the classification used by the Geological Survey of Ireland Quaternary Section in mapping Quaternary sediment types.This classification has been altered only to ensure utility specific to the requirements of the EPA Soil and Subsoil Mapping Project. (Please refer to "Teagasc-EPA Soils and Subsoils Mapping Project - Final Report" for more information. Available for download at https://gis.epa.ie)

This is a dataset of the lake segment polygons in the Republic of Ireland.

This water flow network dataset is a route feature class rather than a simple polyline. The geometry is generated by merging the river lines of individual geometric network datasets. This layer contains an integrated flow network that includes known flow connections through rivers, lakes and groundwater aquifers. In places where the network is depicted flowing through lakes or through underground channels, the flow channels are schematic only, and do not represent the precise location of these flow channels. The appropriate Geological Survey Ireland data sets should be consulted where underground flows or connections are known or suspected.This dataset is provided by the Environmental Protection Agency (EPA). For more information please see https://gis.epa.ie/geonetwork/srv/eng/catalog.search#/metadata/c4043e19-38ec-4120-a588-8cd01ac94a9c

Meter-scale Urban Land Cover (MULC), a unique, high resolution (one meter2 per pixel) land cover dataset, has been developed for 30 US communities for the United States Environmental Protection Agency (US EPA) EnviroAtlas. MULC data categorize the landscape into these land cover classes: impervious surface, tree, grass-herbaceous, shrub, soil-barren, water, wetland and agriculture. MULC data are used to calculate approximately 100 EnviroAtlas metrics that serve as indicators of nature’s benefits (ecosystem goods and services). MULC, a dataset for which development is ongoing, is produced by multiple classification methods using aerial photo and LiDAR datasets. The mean overall fuzzy accuracy across the EnviroAtlas communities is 88% and mean Kappa coefficient is 0.84. MULC is available in EnviroAtlas via web browser, web map service (WMS) in the user’s geographic information system (GIS), and as downloadable data at EPA Environmental Data Gateway. Fact Sheets and metadata for each MULC Community are available through EnviroAtlas. Some MULC applications include mapping green and grey infrastructure, connecting land cover with socioeconomic/demographic variables, street tree planting, urban heat island analysis, mosquito habitat risk mapping and bikeway planning. This article provides practical guidance for using MULC effectively and developing similar high resolution (HR) land cover data. This dataset is associated with the following publication: Pilant, D., K. Endres, D. Rosenbaum, and G. Gundersen. US EPA EnviroAtlas Meter-Scale Urban Land Cover (MULC): 1-m Pixel Land Cover Class Definitions and Guidance. Remote Sensing. MDPI AG, Basel, SWITZERLAND, 12(12): 1909, (2020).