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Air Data

Air samples are collected in Portland, OR and analyzed twice per week prior to being shipped to the EPA for further analysis.

Data has been posted to the website since March of 2011.  Due to radiation levels not being greater than normal background radiation levels, the posting of results has been discontinued.  Instead, detailed results can be found on EPA's website.  Historical data obtained by Radiation Protection Services can be found below. 

Data:
Archive: 2013
Archive: 2012
Archive: 2011