RE: NRC provides generic soil criteria (DCGLs) using latest version o

[Bill_Goldsmith@radian.com]

Eric:  Thanks for the information.  Has anyone compared these values for
naturally occurring radionuclides with their corresponding concentrations in
phosphate fertilizers.  Some values are given in Section 3 of NCRP 95.
After remediating to these concentrations, be careful about seeding and
applying fertilizer or you may have to remediate again.
Bill Goldsmith
Radian International LLC
423-220-8265
FAX 423-483-9061
Bill_goldsmith@radian.com <mailto:Bill_goldsmith@radian.com> 



		-----Original Message-----
		From:	Abelquist, Eric [mailto:AbelquiE@orau.gov]
		Sent:	December 07, 1999 14:21
		To:	Multiple recipients of list
		Subject:	NRC provides generic soil criteria (DCGLs)
using latest version o

		Dear Radsafers-

		Please note the attached Federal Register notice from the
NRC related to
		soil concentrations that correspond to the 25 mrem/y release
criterion.  The
		NRC has used an updated version of DandD (somewhat less
conservative default
		parameter values).  Some of the more common radionulcide
DCGLs (in pCi/g)
		are as follows:

		Co-60.....................................  3.8 E+00
		Sr-90.....................................  1.7 E+00
		Cs-137....................................  1.1 E+01
		Ra-226....................................  7.0 E-01
		Ra-226+C \4\..............................  6.0 E-01
		Th-232....................................  1.1 E+00
		Th-232+C..................................  1.1 E+00
		U-234.....................................  1.3 E+01
		U-235.....................................  8.0 E+00
		U-235+C...................................  2.9 E-01
		U-238.....................................  1.4 E+01
		U-238+C...................................  5.0 E-01

		Check it out.

		Regards,
		Eric Abelquist


		Eric W. Abelquist
		ORISE
		P.O. Box 117
		Oak Ridge,TN 37831
		Tel (423) 576-3740
		FAX (423) 241-3497
		Email: abelquie@orau.gov 

		[Federal Register: December 7, 1999 (Volume 64, Number 234)]
		[Notices]               
		[Page 68395-68396]
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