EPA presents dose and risk estimates for radon emissions from existing and hypothetical uranium mills and from in situ leach uranium mines in USA
On Nov. 10, 2011, EPA released a report presenting dose and risk estimates for radon releases from each uranium in situ leach mine, from each licensed uranium mill and its associated tailings impoundments, and from two generic mill sites in the Western U.S. (New Mexico) and Eastern U.S (Virginia). The assessment calculates collective doses, and individual doses for the "reasonably maximally exposed individual", using the CAP88 software.
The maximum annual population dose determined is 200.3 person-rem [2.003 person-Sv], and the maximum annual dose received by a reasonably maximally exposed individual is 28.2 mrem [0.282 mSv] (both for the Eastern Generic site); these doses are the highest by far among all sites.
> Download: Risk Assessment Revision for 40 CFR Part 61 Subpart W – Radon Emissions from Operating Mill Tailings, Task 4 - Detailed Risk Estimates
, November 10, 2011 (2MB PDF) : http://www.epa.gov/radiation/docs/neshaps/subpart-w/historical-rulemakings/subpart-w-risk.pdf
EPA's REGULATORY RESPONSIBILITY for URANIUM MINING and MILLING. NAS/NRC Committee on Uranium Mining in Virginia
http://media.gatewayva.com/registerbee/specials/Uranium.pdf
Info from:
http://www.wise-uranium.org/uregusa.html#40CFR61WREV
