Data and Tools
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TRI Relative Risk-Based Environmental Indicators: Interim Toxicity Weighting Summary Document, June 1997
This document provides the methodology and preliminary results for the chronic exposure human health toxicity weights used in the Indicators project
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Methodology Document for RSEI Model Version 2.1.5, October 2007
This methodology document accompanies version 2.1.5 of the Risk-Screening Environmental Indicators model.
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Risk-Screening Environmental Indicators (RSEI) Methodology
Risk-Screening Environmental Indicators (RSEI) Methodology
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Developing the Risk-Screening Environmental Indicators
Describes options considered during the development of the Risk-Screening Environmental Indicators screening model
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Methodology Document for RSEI Model Version 2.1, January 2004
This methodology document accompanies version 2.1 of the Risk-Screening Environmental Indicators model.
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Methodology Document for RSEI Model Version 2.1.2, August 2004
This methodology document accompanies version 2.1.2 of the Risk-Screening Environmental Indicators model.
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RSEI Version 2.1 Distribution Package
Information distributed to users in technical release of RSEI Version 2.1
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9 - Evaluation and Refining Fish Consumption Advisory As Needed
Information related to Develop Risk Communication Programs for Fish and Shellfish Consumption Advisories - 9 - Evaluation and Refining Fish Consumption Advisory As Needed
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Estimate of Stack Heights and Exit Gas Velocities for TRI Facilities in OPPT's Risk-Screening Environmental Indicators Model, June 1999
This document describes the methods used to estimate stack heights and exit gas velocities for TRI facilities
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TRI Relative Risk-Based Environmental Indicators Methodology, June 1997
This report explains how the proposed Indicators are constructed, and includes discussions of the conceptual methodology, data sources, and the computational approach.
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User's Manual for OPPT's Risk-Screening Environmental Indicators Model: Version 1.0, November 1999
This manual describes the Indicator methodology, operations of the computer model and the step-by-step processes to perform them, and pre-run queries available with the model.
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User's Manual for RSEI Model Version 2.1, December 2002
This manual accompanies version 2.1 of the Risk-Screening Environmental Indicators model.
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User's Manual for RSEI Model Version 2.1.2, August 2004
This manual accompanies version 2.1.2 of the Risk-Screening Environmental Indicators model.
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User's Manual for RSEI Model Version 2.1.5, September 2007
This manual accompanies version 2.1.5 of the Risk-Screening Environmental Indicators model
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Analyses Performed for the Risk-Screening Environmental Indicators
Describes analyses performed as part of the Risk-Screening Environmental Indicators screening tool
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TRI Relative Risk-Based Environmental Indicators: Summary of Comments Received on the Draft 1992 Methodology and Responses to Comment, May 1997
This document contains general comments on the original Indicators methodology, the toxicity weighting, the chronic ecological indicator and other issues. OPPT's responses and proposed changes are also discussed.
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Regional SDAMs FAQs
Answers to some of the most frequently asked questions about Regional SDAMs and how to apply them in the field are listed.
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Learn about Regional SDAMs
Streamflow Duration Assessment Methods are rapid field methods using hydrological, geomorphological, and biological indicators, observable in one site visit, to classify streamflow duration as perennial, intermittent, or ephemeral at the stream reach scale
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TracMyAir
TracMyAir is a web application air pollution exposure model that estimates a person’s daily exposure to outdoor-generated fine particulate matter (PM2.5) and ozone. The TracMyAir web app is an efficient and cost-effective tool for researchers.
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Greenhouse Gas Equivalencies Calculator - Revision History
Describes the updates made to the Greenhouse Gas Equivalencies Calculator since it was first posted on EPA’s website in February 2008.