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  • #1 Federal

    EPA 40km Hexagons for Conterminous United States

    This dataset of 40 square kilometer (sq. km) hexagons was created by the U.S. EPA's Environmental Monitoring and Assessment Program (EMAP) and is being released by the U.S. Geological Survey for...

    Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: May 05, 2026 at 10:11 PM

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