CY-98-105, Forwards Response to 980603 RAI Re Background Determination Technical Support Document (Tsd).Util Has Identified That Figure 4 of Tsd Inadvertently Did Not Include Labels for Two Pathways from Lower Left Hand Decision Block

Forwards Response to 980603 RAI Re Background Determination Technical Support Document (Tsd).Util Has Identified That Figure 4 of Tsd Inadvertently Did Not Include Labels for Two Pathways from Lower Left Hand Decision Block

ML20249C328
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	06/18/1998
From:	Bouchard G CONNECTICUT YANKEE ATOMIC POWER CO.
To:	Galloway D CONNECTICUT, STATE OF
References
CY-98-105, NUDOCS 9806290060
Download: ML20249C328 (6)

Text

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O CONNECTICUT YANKEE ATOMIC POWER COMPANY HADDAM NECK PLANT 362 INJUN HOLLOW ROAD e EAST HAMPTON. CT 06424-3099 June 18,1998 CY-98-105 Mr. Denny Galloway Acting Director, Radiation Control Division Connecticut Department of Environmental Protection 79 Elm Street Hartford, CT 06106-5127

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Haddam Neck Plant Response to Request for Information Background Determination Technical Sucoort Document -

Dear Mr. Galloway,

The purpose of this letter is to formally respond to your request for additional information dated June 3,1998m on the Background Determination Technical Support Document (TSD). Attachment 1 contains a restatement of your questions along with the Connecticut Yankee Atomic Power Company (CYAPCO) responses.

t in addition, CYAPCO has identified that Figure 4 of the TSD inadvertently did not  !

include labels for the two pathways from the lower left hand decision block.

Please replace Figure 4 of the TSD with the revised Figure 4 enclosed as Attachment 2. j

j 9806290060 980618 i PDR ADOCK 05000213 i w PDR  ;

i (1) Denny Galloway letter to Russell A. Mellor, dated June 3,1998. j 1026-3 REV 2-9*

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I Connecticut Dep rtment of Environmental Protection l . CY-98-105/Page 2 If you should have any questions on the above or attached, please contact l Mr. G. P. van Noordonnen at (860) 267-3938.

Very truly yours, 1

l CONNECTICUT YANKEE ATOMIC POWER COMPANY For: R. A. Mellor Vice President - Operations and Decommissioning i'

By: ~

' 'G. H. Bo'uchard cc: W. J. Raymcnd, Senior Resident inspedor, Haddam Neck Plant K. T. A. McCarthy, CT DEP Monitoring and Radiation Division U.S. Nuclear Reg & tory Commission Attention: Document Control Desk Washington, D.C. 20555 i

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Attachment 1 Haddam Neck Plant Response to Request for Information Background Determination Technical Sunoort Document i

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1 June 1998

Connecticut Departmsnt of Environmental Protection

, Attachment 1/CY-98-105/Page 1 Question 1 l

l Section 3.0 references data derived from the Radiological Environmental Monitoring Program from the years 1975 - 1985. Why was more recent data not utilized in this process?

Response 1 The Radiological Environmental Monitoring Program (REMP) only took soil samples from 1975 to 1985. No data is available after this date. However, CYAPCO believes this data is valid for establishment of the background levels of Cesium-137.

Question 2 In relation to the previously referenced data, was the 3.8 pC!/gm value decay corrected?

Response 2 The 3.8 pCi/gm value was not decay corrected in the original version of the Technical Support Document. The revised version of the Technical Support Document, transmitted via CYAPCO letter dated June 12,1998<2) contains a new value of 2.6 pCi/gm which has been corrected for decay.

(2) CYAPCO letter CY-98-102 from R. A. Mellor to Kevin T. A McCarthy, ' Background Determination Technical Support Document - Revision 1," dated June 12,1998.

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l Attachment 2 Haddam Neck Plant Revised Figure 4 Backaround Date:mination Technical Suonort Document l

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