Exposure Factors Interactive Resource for Scenarios Tool (ExpoFIRST), Version 2.0
Notice - This site contains archived material(s)
Archive
disclaimer
Archived files are provided for reference
purposes only. These files are no longer maintained by the Agency and may be outdated. For
current EPA information, go to www.epa.gov. It is EPA's policy to
support reasonable accommodation to persons with disabilities, pursuant to the Rehabilitation
Act of 1973, 29 U.S.C. 791. If you need assistance with accessing archived files, contact
EPA's Reasonable Accommodations
or submit a request using the Contact Us form.
Abstract
ExpoFIRST – the Exposure Factors Interactive Resource for Scenarios Tool – brings EPA’s Exposure Factors Handbook: 2011 Edition (EFH) data to an interactive tool that maximizes flexibility and transparency for exposure assessors.
ExpoFIRST represents a significant advance for regional, state, and local scientists in performing and documenting calculations for community and site-specific exposure assessments. ExpoFIRST replaces manual calculation and documentation and allows users to draw on data found in the 2011 EFH. The tool stores more than 8,000 values extracted from more than 75 of the most commonly used tables in the EFH. It allows flexibility in scenario design and automates the documentation of algorithms, exposure parameters, and exposure dose estimates. ExpoFIRST is intended to replace the 2004 Example Exposure Scenarios report and complement the 2014 Child-Specific Exposure Scenario Examples report.
The purpose of ExpoFIRST is to allow users to draw on data found in the 2011 Exposure Factors Handbook: 2011 Edition to develop user-defined scenarios based on route of exposure, medium, receptor(s), timeframe, and dose metric for a contaminant of concern. Assessors can then modify initial parameters as appropriate to account for assessment-specific knowledge and use the tool to calculate deterministic exposure estimates as point estimates. ExpoFIRST allows users to define an unlimited potential scenarios for various receptor populations and life-stages.
ExpoFIRST was developed using Microsoft Access and Visual Basic for Applications (VBA).
ExpoFIRST represents a significant advance for regional, state, and local scientists in performing and documenting calculations for community and site-specific exposure assessments. ExpoFIRST replaces manual calculation and documentation and allows users to draw on data found in the 2011 EFH. The tool stores more than 8,000 values extracted from more than 75 of the most commonly used tables in the EFH. It allows flexibility in scenario design and automates the documentation of algorithms, exposure parameters, and exposure dose estimates. ExpoFIRST is intended to replace the 2004 Example Exposure Scenarios report and complement the 2014 Child-Specific Exposure Scenario Examples report.
The purpose of ExpoFIRST is to allow users to draw on data found in the 2011 Exposure Factors Handbook: 2011 Edition to develop user-defined scenarios based on route of exposure, medium, receptor(s), timeframe, and dose metric for a contaminant of concern. Assessors can then modify initial parameters as appropriate to account for assessment-specific knowledge and use the tool to calculate deterministic exposure estimates as point estimates. ExpoFIRST allows users to define an unlimited potential scenarios for various receptor populations and life-stages.
ExpoFIRST was developed using Microsoft Access and Visual Basic for Applications (VBA).
History/Chronology
| Date | Description |
|---|---|
| Jun 2015 | EPA completed an internal review. |
| Feb 2016 | EPA released the application for an external letter review. |
| Sep 2016 | EPA released the final report and Access DB tool. |
| Apr 2018 | Released an update to the Access DB file. |
This document has been reviewed in accordance with U.S. Environmental Protection Agency policy and approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
- Expo-FIRST Getting Started (PDF) (3 pp, 307 KB, about PDF)
- Expo-FIRST Instructional Notes (PDF) (27 pp, 757 KB, about PDF)
- Expo-FIRST Glossary (PDF) (9 pp, 346 KB, about PDF)
- Expo-FIRST Frequently Ask Questions (FAQs) (PDF) (23 pp, 837 KB, about PDF)
- Expo-FIRST Access Database (v.2.01) (ZIP) (5 MB, about ZIP)