Learn the Issues
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Get Involved with Cleanups at Federal Facilities
get involved in cleanups at federal facilities
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Ellsworth Air Force Base Community Town Hall
Please join Ellsworth Air Force Base for an update on PFAS and your community and the status of cleanup progress at Ellsworth AFB. The Air Force (lead agency), EPA and South Dakota Department of Agriculture and Natural Resources (SD DANR) will be in attend
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EPA Proposes Cleanup Plan for Industrial Contamination in Newark’s Pierson’s Creek
Newark, N.J. - U.S. Environmental Protection Agency (EPA) is proposing a plan to clean up contaminated sediment, soil and industrial waste in Pierson’s Creek, a 1.5-mile waterway that runs through an industrial area in Newark, New Jersey.
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Marshall Landfill Superfund Site Public Meeting
This public meeting with discuss the five-year review of the Marshall Landfill Site which is a 160-acre site consisting of two adjacent 80-acre landfills. The northern landfill is Marshall Landfill, and the southern landfill is Boulder Landfill.
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Source Water Protection Planning
Public water systems and source water protection partners can use source water assessment results to inform development of an action plan and implementation of measures to protect and/or enhance source water.
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State Implementation Plan (SIP) Attainment Demonstration Guidance
how to prepare attainment demonstrations for National Ambient Air Quality Standards (NAAQS) and the Regional Haze Rule using air quality modeling and other relevant technical analyses.
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Multipollutant Modeling Applications
2002 multi-pollutant modeling platform
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Photochemical Modeling Applications
Provides access to modeling applications involving photochemical models, including modeling of ozone, particulate matter (PM), and mercury for national and regional EPA regulations such as the Clean Air Interstate Rule (CAIR) and the Clean Air Mercury Rule
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Air Pollutant Receptor Modeling
Receptor models are mathematical or statistical procedures for identifying and quantifying the sources of air pollutants at a receptor location.
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Air Modeling - Meteorological Guidance
Meteorological guidance for the use of observational data in permit modeling, monitoring for modeling applications, and other related data procedures and quality assurance
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Air Quality Dispersion Modeling - Related Model Support Programs
Programs and utilities that are used in support of some of the dispersion models listed here. Note that utilities designed for use with particular models will be found with those models.
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Air Quality Dispersion Modeling - Screening Models
Models that are often applied before applying a refined air quality model to determine if refined modeling is needed.
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Nitrogen Dioxide/Nitrogen Oxide In-Stack Ratio (ISR) Database
The EPA’s Guideline on Air Quality Models, Appendix W to 40 CFR Part 51, recommends a three-tiered screening approach to estimate ambient concentrations of Nitrogen Dioxide (NO2).
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Air Modeling - Observational Meteorological Data
Observed meteorological data for use in air quality modeling consist of physical parameters that are measured directly by instrumentation, and include temperature, dew point, wind direction, wind speed, cloud cover, cloud layer(s), ceiling height,
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Air Quality Model Clearinghouse
The Model Clearinghouse is a focal point for interpretation of modeling guidance in specific regulatory applications.
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Air Modeling - Announcements
Air Modeling Recent Additions
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Criminal Press Releases - 2020
This is a list of press releases announcing results of EPA criminal cases adjudicated in U.S. courts for 2019.
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Environmental Crime Victim Resources - Michigan
A resource listing for environmental crime victims
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Environmental Crime Victim Resources - New Jersey
A resource listing for environmental crime victims
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Chemical Mass Balance (CMB) Model
The EPA-CMB Version 8.2 uses source profiles and speciated ambient data to quantify source contributions. Contributions are quantified from chemically distinct source-types rather than from individual emitters.