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Appendix D. EXAMPLE OF EXISTING MECHANISMS FOR PUBLIC
ACCESS TO EPA-GENERATED DATA SETS AND VISUALIZATION
TOOLS
EPA has a long history of making environmental data and information, especially information
supporting regulatory actions, publicly accessible. Currently EPA provides public access to a
wide range of environmental data and information through websites, libraries, data analytics, and
presentation tools. Ensuring this access includes delivering high-quality data discovery,
scientific, analytical, and statistical services to support research and decision making in the
environmental and health arenas.
The EPA Toxics Release Inventory (TRI) Program (https://www.epa.gov/toxics-release-
inventory-tri-program), established in 1986, is a centerpiece of the community right-to-know
approach for environmental information. Through this program, EPA annually provides
information on toxic chemical releases and other waste management data to the public. The TRI
Explorer (http://catalog.data.gov/dataset/toxics-release-inventory-tri-explorer-widget) allows
the public to generate reports on releases, transfers, and waste management that can be displayed
by facility, chemical, geographic area, industry (North American Industry Classification System
code), reporting years, and maps.
Envirofacts went public in 1995, providing a variety of data from program systems across EPA
to the public via the Envirofacts website (https://www3.epa.gov/enviro/), including data about air,
land, water, waste, toxics, radiation, regulated facilities, compliance grants, and regulated
substances. The EnviroMapper (https://catalog.data.gov/dataset/enviromapper) released in 1998
enabled the public to access an interactive web mapping application to map EPA-regulated
facilities and obtain associated information from Envirofacts in a geographic area of their choice
such as a city, town, or zip code. Over the years, this application evolved into MyEnvironment
(https://catalog.data.gov/dataset/myenvironment), currently EPA’s main public access mapping
tool. Users can view Envirofacts data in conjunction with links to web sites that contain
information on air, land, water, and changes in their environment. This includes allowing users to
map impaired water bodies and streams and view information about the area they mapped, e.g.,
watersheds.
In 2003, EPA developed the Geospatial Data Index (GDI), the first Agency data registry,
which provided EPA staff with an extensive index of geospatial data available to support
the Agency’s programmatic and regulatory responsibilities. By 2007, the GDI evolved into