Re[2]: What is a contaminated soil ?

[Randall_F_Brich@RL.gov]

     10 CFR 835 requires soil which is contaminated above natural 
     background to be posted (i.e., there is no de minimus for byproduct or 
     other nuclear material). In order to release for unrestricted use real 
     property (eg. soil) that is contaminated, an analysis using a DOE 
     approved code (i.e., RESRAD) must be performed. If, the site to be 
     released is on the National Priority List, then, regulator approval of 
     the analysis typically is required at some stage in the remediation 
     process.  Naturally, the selection of natural background has some 
     importance. If interested in any particulars regarding the Hanford 
     experience in the area of natural background and release of real 
     property please contact me directly at:
     
     Randy Brich
     USDOE, Richland Operations Office
     
     e-mail: randall_f_brich@rl.gov
______________________________ Reply Separator _________________________________
Subject: Re: What is a contaminated soil ?
Author:  JMUCKERHEIDE@delphi.com at -MailLink
Date:    1/17/97 3:56 PM


Randy, and all,
     
This defines "contamination AREA" but not "contamination" except in the 
imprecise allusion to "levels exceeding natural background" (and 'not released 
by DOE' which is a little circular since something can stay contaminated 
forever on that standard). 
     
>      According to Title 10, Code of Federal Regulations, 835, "Occupational 
>      Radiation Protection's Implemetation Guide on Posting and Labeling, 
>      November 1994, soil contamination area is defined: 
>      
>      "Any area where radioactive material contamination exists in a matrix 
>      (eg. soil) at levels exceeding natural background and has not been 
>      release for unrestricted use in accordance with DOE Order 5400.5, 
>      Radiation Protection of the Public and the environment."
>      
>      Randy Brich
>      USDOE
>      Richland
>      e-mail: randall_f_brich@rl.gov 
> 
> 
> ______________________________ Reply Separator 
________________________________ _
> Subject: What is a contaminated soil ?
> Author:  Jean-Michel Mure <Jean-Michel.Mure@andra.fr> at -MailLink 
> Date:    1/14/97 10:46 AM
> 
> 
> Hi Radsafers,
>      
> I would like to know if there the american legislation (or elsewhere) 
> defines in an explicit manner (in tems of activity per unit mass for 
> example), what is a contaminated soil ? If not, what is the decision 
> criteria which is used by safety authorities to decide whether a soil is to 
> be decontaminated? 
>      
> Can you provide references for useful documents. 
>      
> Thanks and best regards.
> JM        
> *************************************************** 
> Jean-Michel MURE
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Subject: Re: What is a contaminated soil ?
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