EPA's Metal Finishing Facility Risk Screening Tool (MFFRST): Part 2, Updates to Source Emission Characterization

摘要

MFFRST is a "user-friendly" tool that enables anyone to perform a screening characterization of health risks to workers and neighbors of metal finishing facilities. This tool focuses on human health impacts from inhaling chemicals emitted from metal finishing facilities. The tool has three major modules that are combined to calculate health risks. The first module characterizes atmospheric emissions from process tanks in metal finishing shops. It is this module only that will be discussed in this report. Expert reviews of MFFRST were sought from industry scientists, federal (EPA, OSHA) and state agencies, non-government organizations (NGOs), consultants and others. Sixty-two individuals were sent the June 1999 version of MFFRST and documentation. Of those, 14 provided comments back to EPA. Only the comments that address the first module (the calculation of emissions) will be discussed in this report. This paper will also conduct a simple "reality" test for the procedures that estimate atmospheric emissions in MFFRST. Emissions of constituents associated with specific plating lines are compared against stack emissions of those same constituents as reported in the TRI data base that accompanies MFFRST.