US Environmental Protection Agency
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US EPA Envirofacts - a relational database that integrates data extracted from five EPA program systems: Envirofacts Aerometric Information Retrieval System (AIRS) Facility Subsystem (EF AIRS/AFS), Comprehensive Environmental Response, Compensation and Liability Information System (CERCLIS), Permit Compliance System (PCS), Resource Conservation and Recovery Information System (RCRIS), Toxic Release Inventory System (TRIS), and the Locational Reference Tables (LRT)