ML060900644

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E-mail from T. Jones of Entergy to J. Noggle of USNRC, Regarding Monitoring Well 111 Criteria - DRAFT0.doc
ML060900644
Person / Time
Site: Indian Point Entergy icon.png
Issue date: 10/17/2005
From: Jones T
Entergy Nuclear Northeast
To: Noggle J
Division of Reactor Safety I
References
FOIA/PA-2006-0019
Download: ML060900644 (1)


Text

, James Noqqle - FW: Monitorinq Well 1 1 1 Criteria-DRAFTO.doc Paqe 1lii11 I Page James Noggle FW: Monitoring Well 1ilCriteria-DRAFTO.doc From: "Jones, T. R." <tjones2 @entergy.com>

To: "'James Noggle'" <JDN~nrc.gov>

Date: 10/17/05 1:23PM

Subject:

FW: Monitoring Well 111 Criteria-DRAFTO.doc From: Lavera, Ron Sent: Monday, October 17, 2005 1:22 PM To: Leach, Don; Jones, T. R.; Axelson, William L; Quinn, Dennis; Mayer, Don; Peters, James

Subject:

Monitoring Well 111 Criteria-DRAFTO.doc Monitoring Well 111 (MW-i 11) IP-2 Transformer Yard sample analysis parameter selection criteria.

The water sample from Monitoring Well 111 (MW-i 11) located in the IP-2 Transformer Yard was analyzed for Tritium, Gross Beta and Gamma Spectroscopy. These parameters were selected for several reasons:

1. Tritium is highly mobile inwater/soil combinations, there is little or no interaction of the tritium with soil or water, and thus provides a sensitive indicator of plume extent.
2. Gross beta is a good indicator of total non gamma emitting (such as Sr-90) radionuclide concentration
3. Gamma Spectroscopy is a good indicator of gamma fission product and corrosion product presence.
4. These analytical methods were within the capability of the JAF Environmental Laboratory at the required LLD values.

Following the positive identification of Tritium in MW-i1 11 water, an aliquot from the initial sample volume is being prepared for shipment to an off site vendor for additional analysis for Sr-89/90 and Ni-63.

Sr-89/90 was selected based on mobility in soil and Identification in FSB dirt samples. Ni-63 was selected based on identification in an FSB Crack water sample.