ML070400242

E-Mail from J. Noggle of USNRC to D. Mayer, J. Adler of Entergy and T. Rice of Department of Environmental Conservation, Regarding Sr-90 Split Sample Disagreements

ML070400242
Person / Time
Site:	Indian Point
Issue date:	11/07/2006
From:	Noggle J NRC/RGN-I/DRS/PSB2
To:	James Adler, Mayer D, Rice T Entergy Corp, State of NY, Dept of Environmental Conservation
References
FOIA/PA-2007-0080
Download: ML070400242 (1)

Text

James Noggle - 6r-90 split sample disagreements ........................ Page__

From: James Noggle To: Don Mayer; Jay Adler; Rice, Timothy Date: 11/07/2006 12:51:37 PM

Subject:

Sr-90 split sample disagreements

Dear Don and Jay,

We researched our past sample results and it appears we had agreement with your Sr-90 results through July 7th. Since then, many of your Sr-90 results have indicated almost a factor of 10 lower than our results as provided below.

ORISE IPEC MW-49 25' 8/1/06 11.7+1.0 4.01+1.2 MW-49 42' 8/1/06 19.7+1.4 2.69+1.01 MW-49 65' 8/1/06 16.3+1.2 3:19+1.04 MW-50 42' 8/1/06 4.75+0.77 2.39+1.00 MW-50 67' 8/1/06 30.0+1.7 3.99+1.22 MW-53 120'8/30/06 16.9+1.0 3.74 MW-53 80' 8/23/06 8.6+0.73 2.93 MW-55 78' 8/25/06 28.2+1.3 5.84 MW-57 45' 8/24/06 21.8+1.2 3.05 As we mentioned to you, preliminary NYS DOH results appear to confirm our laboratory results. Please investigate your laboratory results. In order to provide NRC assurance of your ongoing Sr-90.results, we propose taking an additional set of Unit 1 associated monitoring well split samples for the following wells.

MW-42, MW-49, MW-50, MW-36, MW-37, MW-58, MW-59, MW-39, MW-41, MW-45.

I understand that NYS DEC is also interested in participating in these sample splits. We appreciate your support in arranging for these additional samples.

Regards, Jim CC: James Kottan; John White