ML20133G429

Discusses NRC Concerns Re Location of Unconfined Aquifer Recording Well W/Respect to Well Siting Criteria in Ser. Addl Info on Confirmatory Item 5, Final Details of Groundwater & Settlement Monitoring Program, Requested

ML20133G429
Person / Time
Site:	Vogtle
Issue date:	10/10/1985
From:	Adensam E Office of Nuclear Reactor Regulation
To:	Foster D GEORGIA POWER CO.
References
NUDOCS 8510150459
Download: ML20133G429 (4)

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October 10, 1985 I

DISTRIBUTION:.

. Docket File Docket Nos. 50-424 NRC PDR=

and 50-425 Local PDR PRC System NSIC Mr. Donald O. Foster LB #4 r/f Vice President and General Manager MDuncan Georgia Power Company MMiller P. O. Box 299A, Route 2 OELD, Attorney Waynesboro, GA 30830 ACRS (16)

JPartlow

Dear Mr. Foster:

BGrimes JKane EJordan GStaley, EHEB

Subject:

Additional Information Required on Vogtle Confirmatory Item 5,

" Final Details of Groundwater and Settlement Monitoring Program" Enclosed are the staff's coments and information needs regarding the groundwater monitoring portion of confirmatory item 5. The enclosure discusses the staff's concern about the location of the unconfined aquifer reccrding well with respect to the well siting criteria stated in the SER and requests that you address this concern. A response in necessary to resolve the groundwater portion of confirmatory item 5.

The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OM8 clearance is not required under P.L.96-511.

If there are any questions, contact the Project Manager, Melanie Miller, at (301) 492-4259.

Sincerely, Elinor G. Adensam, Chief Licensing Branch No. 4 Division of Licensing

Enclosure:

As stated cc: See next page DU_"_" ~. 3 cnicin L

• PREVIOUSLY CONCURRED certifica 37.. -

DL:LB#4 LA:DL:LB# EHEB DE:EHEB DE:EHEB DE:ADMCET

• miller *MDuncan *GS taley *DLChery *RLBallard *WVJohnston 10/03/85 ,10/03/85 10/03/85 10/08/85 10/09/85 10/10/85 DL:LB :AD-i EAdensam T 10//0 /85 1 85 8510150459 851010 PDR ADOCK 05000424 A PDR

Mr. Donald Foster Georgia Power Company Vogtle Electric Generating Plant cc:

Mr. L. T. Gucwa Resident Inspector Chief Nuclear Engineer Nuclear Regulatory Commission Georgia Power Company P. O. Box 572 P.O. Box 4545 Waynesboro, Georgia 30830 Atlanta, Georgia 30302 Mr. Ruble A. Thomas Deppish Kirkland, III, Counsel Vice President - Licensing Office of the Consumers' Utility Vogtle Project Council Georgia Power Company / Suite 225 Southern Company Services, Inc. 32 Peachtree Street, N.W.

P.O. Bor. 2625 Atlanta, Georgia 30303 Birmingham, Alabama 35202 James E. Joiner Mr. R. E. Conway Troutman, Sanders, Lockerman, Senior Vice President - Nuclear & Ashmore Power Candler Building Georgia Power Company 127 Peachtree Street, N.E.

, P.O. Box 4545 Atlanta, Georgia 30303 l Atlanta, Georgia 30302 1

Douglas C. Teper Mr. J. A. Bailey Georgians Against Nuclear Energy Project Licensing Manager 1253 Lenox Circle .

Southern Company Services, Inc. Atlanta, Georgia 30306 P.O. Box 2625 Birmingham, Alabama 35202 Laurie Fowler, Esq.

218 Flora Avenue, N.W.

Ernest L. Blake, Jr. Atlanta, Georgia 30307 Bruce W. Churchill, Esq.

Shaw, Pittman, Pctts and Trowbridge 1800 M Street, N.W.

Washington, D. C. 20036 Tim Johnson Mr. G. Bockhold, Jr. Executive Director i Vogtle Plant Manager Educational Campaign for.

Georgia Power Company a Prosperous Georgia Route 2, Box 299-A 175 Trinity Avenue, S.W.

Waynesboro, Georgia 30830 Atlanta, Georgia 30303 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W., Suite 2900 Atlanta, Georgia 30323

E t

. NRC Staff Coments on Details of the Vogtle Unconfined Aquifer Groundwater Level Monitoring Program (Confirmatory Item 5)

In the Safety Evaluation Report for Vogtle, Units 1 and 2 (NUREG-1137),

the applicant was to coordinate the final details of the groundwater level monitoring program with the NRC staff (part of Confirmatory Item 5).

The applicant discussed its groundwater level monitoring program during a site visit on June 19, 1985. Details of the groundwater monitoring program except the location of the recording well in the unconfined aquifer are acceptable. The selection of well 808 as the unconfined aquifer recording well does not appear to be as appropriate as some other wells. Two of the well location criteria given in Section 2.4.12.7 of the SER do not appear to be met with respect to proximity of previously measured high groundwater levels and the recording rain gauge.

Maps prepared by the applicant of the unconfined groundwater levels dated November 1971 and December 1984 are both consistent in showing that the highest levels are south of the power block area. Either well 803A or

_804 appear to be more appropriately situated with respect to the criterion of proximity to previously measured high groundwater levels.

From the interpretation of both maps, well 808 will be monitoring ground-water levels on the order of 5-10 ft lower than these wells on the south side of the, power block area. Because it does not appear that recording well 808 is;in the proximity of the previously measured high groundwater levels, the applicant should then discuss how the dynamic responses of recording'well 808 can be combined with the weekly measurements from the other wells, some of which are up-gradient, and extrapolated to the <

design-basis groundwater level.

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~hs-Also, other wells are situated closer than well 808 to the recording rain gauge by at least 2500 ft. (about i mile).

The applicant needs to address these comments on the details of the unconfined aquifer groundwater level monitoring program and satisfy the staff's questions about the selection of well 808 prior to the resolution of confirmatory item 5.

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