Integrated Science Assessment (ISA) for Lead (Second External Review Draft, Mar 2012)
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EPA released this draft document to seek review by the Clean Air Scientific Advisory Committee (CASAC) and the public (meeting date and location to be specified in a separate Federal Register notice). The draft document does not represent, and should not be construed to represent, any final EPA policy, viewpoint, or determination. EPA will consider any timely public comments submitted when revising the document.
Lead (Pb) is one of six principal (or criteria) pollutants for which EPA has established NAAQS. Periodically, EPA reviews the scientific basis for these standards by preparing an Integrated Science Assessment (ISA) (formerly called an Air Quality Criteria Document). The ISA, in conjunction with additional technical and policy assessments, provide the scientific basis for EPA decisions on the adequacy of the current NAAQS and the appropriateness of possible alternative standards. The Clean Air Scientific Advisory Committee (CASAC), an independent science advisory committee whose existence and whose review and advisory functions are mandated by Section 109 (d) (2) of the Clean Air Act, is charged with (among other things) independent scientific review of EPA's air quality criteria.
The references considered for inclusion in, or cited in, the first and second external review drafts of the ISA are available at http://hero.epa.gov/lead (the cited or considered results may also be refined by scientific subjects such as ecological effects, health effects, exposure, toxicokinetics, and atmospheric science).
|May 2011||EPA releases the Integrated Science Assessment for Lead (First External Review Draft) (EPA /600/R-10/075A). [Federal Register May 6, 2011]|
|Jun 2011||EPA's Science Advisory Board's CASAC announces a meeting of the Lead Review Panel for the review of the EPA's Integrated Science Assessment for Lead (1st ERD Draft). [Federal Register Jun 21, 2011]|
|Jul 2011||EPA has announced an extension on the comment period, the new deadline for submitting comments is July 19, 2011. [Federal Register Notice Jul 1, 2011]|
|Feb 2012||EPA releases the Integrated Science Assessment for Lead (Second External Review Draft) (EPA /600/R-10/075B). [Federal Register Feb 2, 2012]|
|Mar 2012||EPA's Science Advisory Board's CASAC announces a series of meetings for the Lead Review Panel regarding the review of the EPA's Integrated Science Assessment for Lead (2nd ERD). [Federal Register Mar 13, 2012]|
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.