Re: Thorium compound in soil

["William CTR Kolb"<William.CTR.Kolb@faa.gov>]

     Who must (or should) I notify when I fertilize the roses and azaleas? 
     The high phosphate fertilizer we use has between 50 and 100 pCi/g of 
     U-238.
     
     bill
     william.ctr.kolb@faa.gov
     


______________________________ Reply Separator _________________________________
Subject: Thorium compound in soil 
Author:  <radsafe@romulus.ehs.uiuc.edu> at SMTPGate
Date:    08/11/2000 3:55 PM


Hello RadSafers;
     
I received a request for guidance from a friend who works in a facility 
in an agreement state that uses a (non-RCRA) thorium compound.  They 
have been deemed exempt from licensing by the State, but they no longer 
need to use this compound and decided to radiologically assess their 
facilty as a CYA.  To make a long story short, they discovered that the 
exhaust from their central vacuum system, which vents outside the 
building, has contaminated a patch of ground outside on the order of 
about 30-35 pCi/g (Th-228 + Th-232).  They have already decided to 
remediate the soil, but they want to know if they must (or should) 
notify any governmental entity.
     
Any suggestions or advice?
     
Thanks,
     
Paul
     
"If your experiment requires the use of statistics, you should have done 
a better experiment"
-Ernest Lord Rutheford
-- 
Paul R. Steinmeyer
Health Physicist
Radiation Safety Associates, Inc.
RSA Laboratories, Inc.
voice: 860/228-0487
fax: 860 228-4402
mailto:prstein@radpro.com
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