Data and Tools
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Cornell Mixing Zone Expert System
This page provides an overview Cornell Mixing Zone Expert System water quality modeling and decision support system designed for environmental impact assessment of mixing zones resulting from wastewater discharge from point sources
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Children's Health Curriculum Lesson 8: Sustainable Eating, Healthy Foods, and Community Gardens
This lesson describes what foods we should eat to stay healthy and how to eat food that helps both the Earth and everything on it stay healthy.
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Children's Health Curriculum Lesson 9: All Together Now - Air, Water, Food, and Shelter
This lesson sums up everything the kids have learned about how interconnected the earth is. It also helps them make individual, group, and family pledges to help create a safer and healthier environment.
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Managing the Quality of Environmental Data at EPA Region 4
Information from Region 4 about managing the quality of environmental information
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New Approach Methods Training - 2025 Society of Toxicology Satellite Meeting
NAMs Training at the 2025 SOT Annual Meeting
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Assessing Chemical Process Sustainability with GREENSCOPE
GREENSCOPE is a sustainability assessment tool used to evaluate and assist in the design of chemical processes. The goal is to minimize resource use, prevent or reduce releases, and increase the economic feasibility of a chemical process.
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Endocrine Disruption: Human Health Research
Endocrine disrupting chemicals can affect a range of hormonal systems in ways that interrupt multiple important systems in the body.
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NAMs Tools Training Workshop 2024
New Approach Methods (NAMs) Workshop planned for April 2024 in RTP, North Carolina.
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User’s Guide for the Chemical Transformation Simulator (CTS)
The CTS User’s Guide is designed to provide first-time users a complete understanding of how to utilize the CTS tool.
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Indoor Semi-volatile Organic Compounds (i-SVOC) Version 1.0
i-SVOC Version 1.0 is a general-purpose software application for dynamic modeling of the emission, transport, sorption, and distribution of semi-volatile organic compounds (SVOCs) in indoor environments.
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Ambient Water Quality Tools
Tools that track water quality data and their impacts to the environment and human health.
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Fish Images to Use with Fish Advisories
The U.S. Environmental Protection Agency developed a set of images to convey fish parts that should not be eaten to reduce possible exposure to chemicals among fish-eating populations.
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Sign into Siteimprove - EPA's QA Tool
Login to Siteimprove with your PIV card, where you can see quality assurance scores and reports for your web area including broken links and misspellings, accessibility issues such as headings and links, and other usability issues you can improve.
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Experiencing WebCMS Issues?
Instructions for things to try before contacting WebCMS Support if you think the WebCMS is slow
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Videos: EPA Research Collaborations with State Partners
This webpage contains YouTube videos highlighting EPA ORD Collaborations with State Partners.
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RSIG3D Local/Remote CMAQ File Reader
RSIG3D instructions for reading local and/or remote CMAQ files
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Vapor Recovery Units
Vapor recovery units (VRUs) are commonly used to capture methane emissions from storage tanks and a variety of other low pressure sources such as pipeline pigging operations, compressors, and dehydrators.
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Engine Exhaust
Natural gas-fired engines and turbines are used to run compressors throughout the natural gas value chain. In many operations, the natural gas stream is used to power these engines and turbines. Methane emissions result from incomplete combustion.
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Glycol Dehydrators
Glycol dehydrators are used to remove water from gas. The glycol absorbs water and methane when contacted with the wet gas. Glycol is then regenerated, where absorbed methane is vented to the atmosphere along with the water vapor.
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Equipment Leaks
Equipment leaks, commonly referred to as fugitive emissions, are characterized as unintentional emissions. Leaks occur from equipment components such as connectors, valves, open-ended lines, pressure relief valves, and storage tank thief hatches.