ML071870492

Transmittal of Technical Support Document Calculating Future Groundwater Dose Using the Basement Fill Model

ML071870492
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	05/30/2007
From:	Gerard van Noordennen Connecticut Yankee Atomic Power Co
To:	Document Control Desk, NRC/FSME
References
CY-07-087, CY-HP-0202, Rev 0
Download: ML071870492 (2)

Text

CONNECTICUT YANKEE ATOMIC POWER COMPANY HADDAM NECK PLANT 362 INJUN HOLLOW ROAD

• EAST HAMPTON, CT 06424-3099 May 30, 2007 CY-07-087 Docket No. 50-213 U.S. Nuclear Regulatory Commission Attention:

Document Control Desk Washington, D.C. 20555-001 Haddam Neck Plant Technical Support Document Calculating Future Groundwater Dose Using the Basement Fill Model Enclosed please find one copy of the following Technical Support Document (TSD)developed to address the future groundwater dose using the License Termination Plan (LTP) Basement Fill Model. The purpose of this calculation is to determine the projected future groundwater dose using actual concrete core sample analysis data from concrete structures remaining below grade level in the groundwater saturated zone.TSD CY-HP-0202, Resulting from Residual .....Radioactivity in Concrete to Remain in the Groundwater Saturated Zone using the CY LTP Basement Fill Model, dated May 23, 2007.The results of the calculation is that the dose due to future groundwater for remaining containment foundation concrete and other concrete foundations in the former radiologically controlled area is 1.58 mrem/year Total Effective Dose Equivalent (TEDE)and 0.23 mrem/year TEDE for the discharge tunnel and intake structure foundation.

Both results are below the target level for future groundwater dose of 2 mrem/year.

If you have any questions regarding this submittal, please contact Mr. Rich McGrath at (860) 267-3573.Sincerely, Gerard P. van Noordennen Date Director, Regulatory Affairs and Quality Assuranceý"ff)55O tL USNRC Document Control Desk CY-07-087

/ Page 2

Enclosure:

TSD CY-HP-0202 cc: S. J. Collins, NRC Region I Administrator T. B. Smith, NRC Project Manager L. A. Kauffman, Decommissioning Branch, NRC Region I E. L. Wilds, Jr., Director, CT DEP Division of Radiation