All-Ages Lead Model (AALM), Version 1.05 (External Draft Report, 2005)
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The precursor to the All Ages Lead Model (AALM) was the Integrated Exposure Uptake Biokinetic (IEUBK) Model for Lead in Children. Version 0.99d of the IEUBK was released in March 1994, and has been widely accepted in the risk assessment community as a tool for implementing the site specific risk assessment process when the issue is childhood lead exposure.
Recognizing the need to expand the model to include older childhood and adult lead exposure and to add several features not currently available with the IEUBK model, the AALM was initiated in FY98, when the exposure module was expanded to a full age range (0-90 years) and revised to incorporate several new model features and user options. In FY99, additional AALM development was accomplished with the expansion of the uptake and biokinetic modules, based on published model data summarized in: Leggett, R.W. (1993) Environmental Health Perspectives: 101(7) p 598-616. Each of the three modules were circulated for limited internal (within EPA) review and comment during FY00. The AALM has been further developed in response to expert recommendations in FY01-04. Other Sources:
|Dec 1994||EPA released the Integrated Exposure Uptake Biokinetic (IEUBK) Model for Lead in Children (Version 0.99d).|
|Sep 2005||EPA released the draft report for a 30-day public review and comment period. [Federal Register Notice Sep 27, 2005]|
|Oct 2005||EPA's Science Advisory Board (SAB) hosted a public meeting to discuss the draft report. [Federal Register Notice Oct 14, 2005]|
|Nov 2005||EPA extended the public comment period on the draft report to December 12, 2005. [Federal Register Notice Nov 3, 2005]|
Comments may be submitted and viewed using Regulations.gov. Select search and key in the Docket Number ORD-2005-0026 for the document, The All-Ages Lead Model (AALM) Version 1.05. (External Draft Report).
This download(s) is distributed solely for the purpose of pre-dissemination peer review under applicable information quality guidelines. It has not been formally disseminated by EPA. It does not represent and should not be construed to represent any Agency determination or policy.