This is a catalog of data descriptions. It does not seem to contain any actual data, and although many of the data sources listed have a tab that say \"Dataset\", nothing loads. It is unclear whether these are datasets that exist elsewhere or which have been deleted already. It contains useful descriptions of the datasets (which may or may not exist). Home page states: "Find everything from web services to schemas, data models, and templates." Resource types include a wide range of application integration tools. System of Registries home page states: " provides ... automated services to enable better understanding of environmental terminology and data used by the Agency." Internet Archive URL: https://web.archive.org/web/*/https://ofmpub.epa.gov/sor_internet/registry2/reusereg/searchandretrieve/