EPA Radiation Dose and Risk Modeling HomePage

[CAREY JOHNSTON <JOHNSTON.CAREY@EPAMAIL.EPA.GOV>]

Dear Radsafers:

You can investigate two new EPA WebPages for information on radiation dose and risk modeling. The first
HomePage "Radiation Dose and Risk Modeling" is mostly empty right now but we hope to update it in the near future.


Sincerely,

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Carey A. Johnston (US EPA)
Radiation Protection Division
ph: (202) 233 9341
fx: (202) 233 9650
johnston.carey@epamail.epa.gov
http://www.epa.gov/radiation/
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Radiation Dose and Risk Modeling HomePage
http://www.epa.gov/radiation/modeling/

This HomePage focuses on EPA's radiation dose and risk modeling. It is designed to provide risk assessors, the
scientific community, and the public with EPA's radionuclide risk assessment models and information. 

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Radionuclide Carcinogencity --  Slope Factors
http://www.epa.gov/radiation/heast/

The following HomePage will give you the latest information and guidance on using radionuclide slope factors from
the Health Effects Assessment Summary Tables (HEAST) - Table 4.  Radionuclide slope factors are calculated by
EPA's Office of Radiation and Indoor Air (ORIA) to assist risk assessors with risk-related evaluations and
decision-making at various stages of the remediation process. The HEAST - Table 4 lists ingestion, inhalation and
external exposure cancer slope factors for radionuclides in units of picocuries (pCi). 

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