Science & Technology
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PFAS Analytic Tools Webinar Archive
This EPA Tools & Resources webinar, recorded June 1st, details EPA’s PFAS Analytic Tools.
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CompTox Chemicals Dashboard Training Webinar Archive
This training webinar on the CompTox Chemicals Dashboard provides an overview of the Dashboard for new users as well as demonstrating new functionality for veteran users.
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Air Sensor Performance Testing Protocols, Metrics, and Target Values for PM2.5 and Ozone Webinar Archive
This webinar highlights two reports developed by EPA that outline recommended performance testing protocols, metrics, and target values for fine particulate matter (PM2.5) and ozone (O3) air sensors.
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EPA Research Partner Support Story: Assessing sediment habitat quality using novel remote sensing technologies
Evaluating sediment habitat quality in an urban estuary to inform sediment remediation activities
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EnviroAtlas: Connecting People, Nature, Health, and the Economy Training Webinar Archive
This EPA Tools & Resources training webinar highlighted the EnviroAtlas Interactive Map and Eco-Health Browser.
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Web-Based Data Visualization of Air Sensor Data with RETIGO Webinar Archive
This webinar highlighted the REal TIme Geospatial Data Viewer (RETIGO), a free, web-based visualization tool that allows users to easily visualize their air sensor data.
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Regional Streamflow Duration Assessment Methods
Regional SDAMs for the United States classify streams as perennial, intermittent, or ephemeral at the stream reach scale. Learn about SDAMs, their development, and how to apply these field methods using the web application
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Indoor Air Quality Tools for Schools
This web site will educate the public about indoor environmental issues specific to educational facilities and the importance of developing and sustaining comprehensive indoor air quality management programs.
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Healthy Watersheds Learning Exchanges
More information regarding Healthy Watersheds Learning Exchanges
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CMAQ User's Survey Results
The University of North Carolina's CMAS Center administered surveys in 2016 and 2018 of the CMAQ user community. Results show who uses CMAQ and how they’re applying it to their work.
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CMAQ Metadata
The following documents describe annual adjusted Community Multi-scale Air Quality (CMAQ) deposition fields for the years 2002-2012 and for 2025.
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Incremental Evaluation of CMAQv5.3
The impact on model predicted pollutant concentrations of the major changes in the CMAQv5.2 system compared to the last are tested one at a time. Evaluation results are summarized for ozone and PM2.5 based on simulations of January and July 2011.
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Modeling Toxic Air Pollutants - CMAQ
The CMAQ system can be used to predict the concentration and deposition of many Hazardous Air Pollutants.
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CMAQ Developers Guide
The CMAQ Developers Guide describes general development practices within the CMAQ system and directions on how to contribute source code to the EPA CMAQ GitHub repository.
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CMAQ Model Evaluation Framework
CMAQ is tested to establish the modeling system’s credibility in predicting pollutants such as ozone and particulate matter. Evaluation of CMAQ has been designed to assess the model’s performance for specific time periods and for specific uses.
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Exposure Calculations
EPA Expobox is a collection of resources for exposure assessors. Its purpose is to provide resources and comprehensive step-by-step guidance and links to relevant exposure assessment information, data and models.
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Exposure Data
EPA ExpoBox 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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Exposure Setting
EPA ExpoBox 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 databases.
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Other Rules in Arkansas
Other Rules in Arkansas
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National Emission Standards for Hazardous Air Pollutants (NESHAP) Part 61 in Arkansas
National Emission Standards for Hazardous Air Pollutants (NESHAP) Part 61 in Arkansas.