210AABB3-00C0-477C-A2AD-B3F6108C6A34 eng utf8 dataset dataset National Geospatial Support Team U.S. Environmental Protection Agency, Research Triangle Park OEI RTP NCC GIS USEPA Mailroom N127-02 Research Triangle Park NC 27711 geoservices@epa.gov https://www.epa.gov/geospatial website information pointOfContact 2026-04-11 ISO 19139 Geographic Information - Metadata - Implementation Specification 2007 eng US utf8 geometryOnly composite 239 4326 EPSG 6.2(3.0.1) NPL Superfund Operable Unit Boundaries (EPA) 2018-03-06 publication U.S. EPA Office of Environmental Information (OEI) Research Triangle Park, NC publisher US Environmental Protection Agency originator National Geospatial Support Team U.S. Environmental Protection Agency, Research Triangle Park OEI RTP NCC GIS USEPA Mailroom N127-02 Research Triangle Park NC 27711 geoservices@epa.gov https://www.epa.gov/geospatial website information resourceProvider mapDigital 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 GIS dataset contains polygons depicting U.S. EPA Superfund Operable Unit boundaries. Please contact the SEGS Administrative Team at SEGServices@epa.gov with questions or feedback. U.S. EPA Office of Land and Emergency Management onGoing Kelsey Whalen U.S. Environmental Protection Agency, Office of Land and Emergency Management Office of Superfund Remediation and Technology Innovation Program Analyst 202-566-1091 1301 Constitution Ave NW Mail Code: 5202T Washington DC 20460 Whalen.Kelsey@epa.gov http://www.epa.gov/superfund/ website information publisher monthly United States place EPA Place Names 2015-01-31 publication Cleanup Contaminant Environment Facilities Health Human Impact Management Monitoring Regulatory Remediation Sites Toxics theme EPA GIS Keyword Thesaurus 2018-03-22 publication 020:108 theme Federal Program Inventory 2013-09-16 publication FAC Facilities SEGS theme User 2021-02-04 publication The Agency is providing this geospatial information as a public service and does not vouch for the accuracy, completeness, or currency of data. Data provided by external parties is not independently verified by EPA. This data is made available to the public strictly for informational purposes. Data does not represent EPA's official position, viewpoint, or opinion, express or implied. This information is not intended for use in establishing liability or calculating Cost Recovery Statutes of Limitations and cannot be relied upon to create any rights, substantive or procedural, enforceable by any party in litigation with the United States or third parties. EPA reserves the right to change these data at any time without public notice. EPA Public Domain License licenseUnrestricted https://edg.epa.gov/EPA_Data_License.html unclassified http://project-open-data.github.io/schema/#accessLevel Standard Technical Controls vector eng utf8 Microsoft Windows Server 2016 Technical Preview Version 10.0 (Build 17763) ; Esri ArcGIS 13.5.3.57366 true -115.954 -69.168639 37.865102 48.53041 File Geodatabase Feature Class 10.0 National Geospatial Support Team U.S. Environmental Protection Agency, Research Triangle Park OEI RTP NCC GIS USEPA Mailroom N127-02 Research Triangle Park NC 27711 geoservices@epa.gov https://www.epa.gov/geospatial website information distributor https://services.arcgis.com/cJ9YHowT8TU7DUyn/arcgis/rest/services/FAC_Superfund_Operable_Unit_Boundaries_EPA_Public/FeatureServer ESRI:ArcGIS EPA GeoPlatform Hosted Feature Service webService MB 5 https://dmap-prod-oms-edc.s3.amazonaws.com/OLEM/OLEM-OSRTI/NPL_Boundaries.zip download Zipped file geodatabase with all Superfund boundary layers. download dataset EPA National Geospatial Data Policy Features have been reviewed by U.S. EPA Superfund Remedial Project Managers for public release. true Assemble Regional datasets into single nationwide feature class. 2018-03-01T00:00:00 National Geospatial Support Team U.S. Environmental Protection Agency, Research Triangle Park OEI RTP NCC GIS 919-767-7493 (415) 947-3553 USEPA Mailroom N127-02 Research Triangle Park NC 27711 geoservices@epa.gov https://www.epa.gov/geospatial processor asNeeded National Geospatial Support Team U.S. Environmental Protection Agency, Research Triangle Park OEI RTP NCC GIS USEPA Mailroom N127-02 Research Triangle Park NC 27711 geoservices@epa.gov https://www.epa.gov/geospatial website information author