ML071510136

Yankee Atomic Electric Company, Submittal of Final Groundwater Condition Report for the Yankee Nuclear Power Station

ML071510136
Person / Time
Site:	Yankee Rowe
Issue date:	02/15/2007
From:	Gerard van Noordennen Yankee Atomic Electric Co
To:	Document Control Desk, NRC/FSME
References
BYR 2007-016
Download: ML071510136 (3)

Text

YANKEE ATOMIC ELECTRIC COMPANY YC-V.ANKEE) 49 Yankee Road, Rowe, Massachusetts 01367 February 15, 2007 BYR 2007-016 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555-001

References:

(a) License No. DPR-3 (Docket No. 50-29)

(b) BYR 2006-107, Revision 2 to the Yankee Nuclear Power Station's License Termination Plan (c) Yankee Nuclear Power Station - Issuance of Amendment 158 Re: License Termination Plan (d) BYR 2006-074, Submittal of Groundwater Compliance Plan-for License Termination at YNPS (e) BYR 2006-108, Update of Status of Groundwater Activities

Subject:

Final Groundwater Condition Report On August 31, 2006, Yankee Atomic Electric Company (Yankee) submitted its plan to demonstrate license termination compliance for groundwater at the Yankee Nuclear Power Station (YNPS) site. The final version of the Plan incorporated comments made by the NRC on the draft version of the Plan and received by Yankee on July 31, 2006.

An updated status of groundwater activities was provided on November 21, 2006.

Enclosed is the Final Groundwater Condition Report. This report summarizes the results of the quarterly groundwater sampling at YNPS for the last two quarters of 2006.

It also contains an evaluation of tritium trends in monitoring wells included in the LTP monitoring program. A three-dimensional flow and transport groundwater model has been developed and is described in the report. This model was used to evaluate the potential attenuation of tritium in MW-107C, which has been identified as the only monitoring well that exceeds EPA MCLs, and to demonstrate LTP compliance in the hypothetical resident farmer's well.

In addition, a change to the Plan is being made to reduce the suite of radionuclides for NRC on February 6, Yankee evaluated the validity of reducing the number of analyses that groundwater samples undergo and is proposing a reduced set of analyses for the first quarter 2007 sampling campaign. It is important to note that tritium continues to be the

U.S. Nuclear Regulatory Commission BYR 2007-016, Page 2 only plant-related radionuclide routinely identified in groundwater to date. Yankee is proposing to select radionuclides for which analyses are to be performed, based on the following graded approach:

• Wells that have consistently shown tritium concentrations below 10,000 pCi/L would undergo analysis for tritium only; and

" Wells that have tritium concentrations above 10,000 pCi/L would undergo tritium analyses, gamma spec analyses, and analyses for C-14, Sr-90, and Tc-99.

If you should have any questions concerning the information provided above, please call Alice Carson at (301) 916-3995, or me at (860) 267-3938.

Sincerely, Gerry van Noordennen Regulatory Affairs Manager

Enclosure:

as stated

U.S. Nuclear Regulatory Commission BYR 2007-016, Page 3 cc: S. Collins, NRC Region I Administrator M. Roberts, Chief, Decommissioning Branch, NRC Region I L. Kauffman, Region I J. Hickman, NRC Project Manager E. Waterman, US Environmental Protection Agency, Region I R. Walker, Director, MA DPH W. Perlman, Executive Committee Chair, FRCOG T.W. Hutcheson, Chair, Franldin Regional Planning Board L. Dunlavy, Executive Director, FRCOG P. Sloan, Directory of Planning & Development, FRCOG D. Howland, Regional Engineer, MA DEP M. Whalen, MA DPH D. Katz, CAN CAN Business Office Robert Ross, CAN Hydrogeologist