Science & Technology
-
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.
-
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…
-
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…
-
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…
-
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
-
WhAEM2000 BBM Files - Worland, Wyoming
WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Worland Quadrangle, Wyoming. Files serve as geographic basis for groundwater modeling.
-
Third-Party Certifications
Oil and Gas Alternative Test Method page - Super Emitter
-
Nitrogen Dioxide (NO2) and Sulfur Dioxide (SO2) Secondary Standards - Federal Register Notices from Current Review
Federal Register notices used to review and develop a new Nitrogen Dioxide (NO2) and Sulfur Dioxide (SO2) secondary standards.
-
Risk Assessment for Other Effects
Risk Assessment for Noncancer Effects
-
PCE Former Dry Cleaner Superfund Site, Atlantic, Cass County, Iowa - Fact Sheet, November 2020
Record of Decision Signed
-
Syntex Facility National Priorities List (NPL) Superfund Site, Verona, Lawrence County, Missouri - Supplemental Information, December 2020
Addendum to Site Update – Completion of Private Well Testing
-
Chinook Salmon
An assessment of Chinook salmon abundance in the Salish Sea. Part of the U.S. EPA and Environment and Climate Change Canada's Health of the Salish Sea Ecosystem Report.
-
Marine Species at Risk
An assessment of marine species at risk of extinction in the Salish Sea watershed. Part of the U.S. EPA and Environment and Climate Change Canada's Health of the Salish Sea Ecosystem Report.