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Human Health Risk Assessment

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The final versions of the spring 2009 RSL tables and supporting documentation were uploaded May 13, 2009. If you downloaded any earlier versions, please discard them and use only materials downloaded May 13 or later."

Risk-Based Concentration Table

Beginning in Spring 2008, Region III will rely for its RBC Table updates on the Regional Screening table developed by Oak Ridge National Laboratory under an Interagency Agreement with EPA.

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Downloadable Tables

Memo on Risk-Based Concentration Table (PDF) (4 pp, 32.2K) This memo discusses the Regional Screening table and its use in EPA Region III.

Region 3 Fish Tissue Screening Levels April, 2009 (PDF) (14 pp, 55.9K) Excel Version
(106 pp, 145KB) This is a very large file. We recommend that you review it online rather than printing it.

Region 3 Risk Assessment Guidance

Note on the Use of Dermal Guidance in Region III. In 2003, EPA Region III stated that it would temporarily continue to use median shower/bath exposure times as defaults, until RAGS E guidance became final. RAGS E has become final, and Region III is adopting the high-end shower/bath times as default recommendations. Region III staff can provide further assistance with site-specific recommendations for the full complement of shower/bath exposure parameters. (4/7/2005)

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