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Model Report

Metal Finishing Facility Risk Screening Tool

Last Revision Date: 10/27/2009 View as PDF
General Information Back to Top
Model Abbreviated Name:

MMFRST
Model Extended Name:

Metal Finishing Facility Risk Screening Tool
Model Overview/Abstract:
The model MFFRST, short for Metal Finishing Facility Risk Screening Tool, is a user-friendly pc-based computer tool which allows an individual to evaluate the potential exposures and health risks to workers and nearby residents from emissions from individual metal finishing facilities.
Keywords: Metal Finishing, Chromium Exposure
Model Technical Contact Information:
Agency Contact:
Matthew Lorber
National Center for Environmental Assessment(8623D)
Lorber.matthew@epa.gov
703 347-8535
Model Homepage: http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=23630
Substantive Changes from Prior Version: None
Plans for further model development: None

User Information Back to Top
Technical Requirements
Computer Hardware
Minimal for RAM, HD
Compatible Operating Systems
Windows
Other Software Required to Run the Model
None
Download Information
Not available for download; contact Matthew Lorber for CD with model.
Using the Model
Basic Model Inputs
Metal finishing process selection, process physical parameters (size of tanks, gas emission rate), contaminant concentrations in finishing tanks, stack height and emission, exposure characterizations, contaminant hazard characterization.
Basic Model Outputs
Predicted indoor and outdoor concentration of identified contaminants, exposure/potential health risk for nearby residents and workers.
User Support
User's Guide Available?
Available on CD. Please contact Matthew Lorber.
Other User Documents
Available on CD. Please contact Matthew Lorber.
Availability of User Support
No support
User Qualifications
Knowledge of metal finishing process, familiarity with exposure and risk characterization at EPA.

Model Science Back to Top
Problem Identification
The EPA Common Sense Initiative (CSI) Metal Finishing Sector’s National Metal Finishing Environmental Research and Development Plan identified developing procedures and tools to characterize risks to workers and neighbors of facilities as a principal need for this sector. This provides a screening level estimate of the inhalation exposures and risks to these subpopulations.
Summary of Model Structure and Methods
Based on emissions as characterized by the user, simple box models are used to characterize indoor exposure, and the embedded SCREEN3 air dispersion model predicts air concentrations to downwind receptors. Based on exposure characterization and contaminant-specific parameters, exposure and health-risk estimates are provided.
Model Evaluation
Please see available references at:
http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=23630

These include the EPA Report, Technical Support Document and User’s Guide for MFFRST, and several conference proceedings publications, which describe case studies and model validation exercises.

Key Limitations to Model Scope
Limited to individual metal finishing facilities. Dispersion models to predict indoor and outdoor air concentrations are limited by definition.
Case Studies
Please see available references at:
http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=23630

These include the EPA Report, Technical Support Document and User’s Guide for MFFRST, and several conference proceedings publications, which describe case studies and model validation exercises.


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