Science & Technology
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Support Documents for EPA’s Third Review of Existing Drinking Water Standards
The support documents for the Six-Year Review 3 of existing National Primary Drinking Water Standards contain extensive information including protocol for the review, and chemical contaminant health effects among others
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RFC 23002 & RFR 23002A - Toxic Substances Control Act (TSCA) Risk Evaluation for 1,4-Dioxane
Request for Correction (RFC) received on behalf of American Cleaning Institute and American Chemistry Council
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State Progress Toward Adopting Numeric Nutrient Water Quality Criteria for Nitrogen and Phosphorus
The progress states are making towards the development of numeric criteria for phosphorus and nitrogen pollution.
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Exploring ToxCast Data
Information and links for downloading ToxCast results data.
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EPA's Principles of Scientific Integrity
Outline of the EPA's scientific integrity policy.
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Tribal Water and Natural Resources Conservation Guide
Landing page for the new Tribal Water and Natural Resources Conservation Guide
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U.S. Government’s International Methane Mitigation Activities: 2021 Accomplishments
The U.S. Government’s Global Methane Initiative Accomplishments ANNUAL REPORT (2021)
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U.S. Government’s International Methane Mitigation Activities: 2020 Accomplishments
The U.S. Government’s Global Methane Initiative Accomplishments ANNUAL REPORT (2020)
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HAB Monitoring and Trends
Information related to HAB Monitoring and Trends
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Supporting Materials: Stakeholder Webinar: 2019 GHGI Public Review Estimates for Natural Gas & Petroleum Systems
GHGI Feb 2019 Stakeholder Meeting Supporting Materials
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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 have 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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Region 5 Harmful Algal Bloom Clean Water Act/Safe Drinking Water Act Workshop and Public Meeting Chicago, IL
Information related to EPA Region 5 HABs Workshop.
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EPA/CDC Interim Clearance Strategy for Environments Contaminated with Anthrax
Strategy for public health and environmental Federal responders to aid Incident Command/Unified Command (IC/UC) in clearing a building or an outdoor environment after an incident involving contamination with Bacillus anthracis (B. anthracis)
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PROCLEANS
Technical product bulletin: this surface washing agent used in oil spill cleanups is most effective if used on solid surfaces such as shoreline beaches and rocks contaminated with light and medium weight crude oils and refined petroleum products.
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Fact Sheet: Final Petroleum Refinery Rule
This action sets forth the U.S. Environmental Protection Agency’s (EPA’s) decision on aspects of the Agency’s proposed reconsideration of the December 1, 2015,
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Clean Air Act Second Prospective Report Study Science Advisory Board Review, March 15-16, 2007
The subcommittee of the 812 council reviewed several materials during this meeting, including a direct cost report, a cost estimation paper, and an ecological assessment topics paper.
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Clean Air Act Second Prospective Report Study Science Advisory Board Review, September 2-3, 2010
These materials were submitted to the section 812 Science Advisory Board (SAB) Council on Clean Air Act Compliance Analysis pursuant to their September 2-3, 2010 review meeting in Washington, D.C.