Science & Technology

This page shows all of the pages at www.epa.gov that are tagged with Science & Technology.

  • WhAEM2000 BBM Files - Preston, Wyoming

    WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Preston Quadrangle, Wyoming. Files serve as geographic basis for groundwater modeling.

  • WhAEM2000 BBM Files - Newcastle, Wyoming

    WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Newcastle Quadrangle, Wyoming. Files serve as geographic basis for groundwater modeling.

  • WhAEM2000 BBM Files - Ogden, Wyoming

    WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Ogden Quadrangle, Wyoming. Files serve as geographic basis for groundwater modeling.

  • WhAEM2000 BBM Files - Medicine, Wyoming

    WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Medicine Bow Quadrangle, Wyoming. Files serve as geographic basis for groundwater modeling.

  • WhAEM2000 BBM Files - Gannett Peak, Wyoming

    WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Gannett Peak Quadrangle, Wyoming. Files serve as geographic basis for groundwater modeling.

  • WhAEM2000 BBM Files - Kaycee, Wyoming

    WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Kaycee Quadrangle, Wyoming. Files serve as geographic basis for groundwater modeling.

  • What are the units of NEI emissions data?

    NEI emissions values represent total annual emissions for the inventory reporting year. Criteria air pollutants and precursors (CAPs) are reported in short tons per year , and hazardous air pollutants (HAPs) are reported in lbs per year .

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  • Where can I download hourly emissions data from continuous monitoring?

    Hourly emissions data files are available from the Clean Air Markets Division of EPA, collected as part of 40 CFR Part 75. The download location has changed in February, 2023. The new location is https://campd.epa.gov/data/bulk-data-files . Once on this new site, use the menu (at the left) and the Keyword…

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  • How do I reset my password for the Emissions Inventory System?

    Instructions for resetting your password are available in the Emissions Inventory System (EIS) User’s Manual and How To’s section on “How Do I Update My Password?” Follow the instructions to reset your password.

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  • Where can I get maps and/or emissions of facility emissions data?

    The EPA provides emissions maps in two ways. First, each of the last three NEI years has a “Facility Mapping” tab available on the main NEI page for that inventory year (for example, see the 2020 NEI page). With this tool, maps can be created for one state at a…

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  • How are Oxides of Nitrogen (NOx) defined in the NEI?

    For all source categories, NOx is compiled from emissions measurements that express NOx mass based on the molecular weight of nitrogen dioxide (NO2), which is 46. Even though emission streams initially consist mainly of NO from most sources, this expression of NOx by NO2 MW is appropriate due to the…

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  • How are emissions trends compiled?

    For criteria air pollutants and precursors, the emissions trends are based on the triennial National Emissions Inventory data, with some interim year data included for non-triennial years. The methods and interim-year approaches are described on the “Development of Data” tab included with the data provided on the Air Pollutant Emissions…

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  • WhAEM2000 BBM Files - Hebgen Lake, Wyoming

    WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Hebgen Lake Quadrangle, Wyoming. Files serve as geographic basis for groundwater modeling.

  • WhAEM2000 BBM Files - Evanston, Wyoming

    WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Evanston Quadrangle, Wyoming. Files serve as geographic basis for groundwater modeling.

  • WebICE Recent Additions

    Web-based Interspecies Correlation Estimation application updates: Species Sensitivity Distribution modules for wildlife/aquatic species now include selection of multiple surrogate species.

  • WhAEM2000 BBM Files - South Pass, Wyoming

    WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for South Pass Quadrangle, Wyoming. Files serve as geographic basis for groundwater modeling.

  • EPA EcoBox Tools by Receptors

    Eco-Box is a toolbox for exposure assessors. Its purpose is to provide a compendium of exposure assessment and risk characterization tools that will present comprehensive step-by-step guidance and links to relevant exposure assessment data bases

  • WhAEM2000 BBM Files - Yellowstone National Park South, Wyoming

    WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Yellowstone National Park South Quadrangle, Wyoming. Files serve as geographic basis for groundwater modeling.

  • EPA EcoBox Tools by Exposure Pathways

    Eco-Box is a toolbox for exposure assessors. Its purpose is to provide a compendium of exposure assessment and risk characterization tools that will present comprehensive step-by-step guidance and links to relevant exposure assessment data bases

  • EPA EcoBox Tools by Stressors

    Eco-Box is a toolbox for exposure assessors. Its purpose is to provide a compendium of exposure assessment and risk characterization tools that will present comprehensive step-by-step guidance and links to relevant exposure assessment data bases

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